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90-421: Before the designation of the national park, the area was used for shifting cultivation ( chena farming). The farmers were gradually removed once the national park was declared. The park is 165 kilometres (103 mi) from Colombo . Udawalawe is an important habitat for water birds and Sri Lankan elephants . It is a popular tourist destination and the third-most visited park in the country. Udawalawe lies on

180-432: A degradation of resources unless actions are taken to arrest the losses. In some cases soil can be irreversibly exhausted (including erosion as well as nutrient loss) in less than a decade. The longer a field is cropped, the greater the loss of soil organic matter , cation-exchange -capacity and in nitrogen and phosphorus , the greater the increase in acidity , the more likely soil porosity and infiltration capacity

270-432: A den in a secluded location, and after a gestation of 65–70 days gives birth to one or two kittens. At birth, the kittens weigh just 60 to 77 g (2.1 to 2.7 oz), and are marked with rows of black spots. They reach sexual maturity at around 68 weeks, by which time they have developed the distinctive adult coat pattern of rusty blotches. Rusty-spotted cats have lived for twelve years in captivity, but their lifespan in

360-414: A different path. There the stimulus for population growth was the hunting of large birds to extinction, during which time forests in drier areas were destroyed by burning, followed the development of intensive agriculture in favorable environments, based mainly on sweet potato (Ipomoea batatas) and a reliance on the gathering of two main wild plant species in less favorable environments. These changes, as in

450-561: A larger system. When the previous relatively stable ecological relationships are destabilized, degradation can occur rapidly. Similar descriptions of the loss of forest and destruction of fragile ecosystems could be provided from the Amazon Basin, by large scale state sponsored colonization forest land (Becker 1995, 61) or from the Central Africa where what endemic armed conflict is destabilizing rural settlement and farming communities on

540-605: A loss of agricultural labour to the industries of the towns. Steensberg (1993, 110-152) provides eye-witness descriptions of shifting cultivation being practised in Sweden in the 20th century, and in Estonia , Poland , the Caucasus , Serbia , Bosnia , Hungary , Switzerland , Austria and Germany in the 1930s to the 1950s. That these agricultural practices survived from the Neolithic into

630-419: A majority are in various stages of natural re-growth. Over time, fields are cultivated for a relatively short time, and allowed to recover, or are fallowed, for a relatively long time. Eventually a previously cultivated field will be cleared of the natural vegetation and planted in crops again. Fields in established and stable shifting cultivation systems are cultivated and fallowed cyclically. This type of farming

720-416: A massive scale. In the tropical developing world, shifting cultivation in its many diverse forms, remains a pervasive practice. Shifting cultivation was one of the first forms of agriculture practiced by humans and its survival into the modern world suggests that it is a flexible and highly adaptive means of production. However, it is also a grossly misunderstood practice. Many casual observers cannot see past

810-404: A new agricultural technique or adopt an existing innovation that will boost yields and that is adapted to the new environmental conditions created by the degradation which has occurred already, even though they will pay for the increases in higher labor costs. Examples of such changes are the adoption of new higher yielding crops, the exchanging of a digging stick for a hoe, or a hoe for a plough, or

900-573: A place for cultivation’s sake" (" neque longius anno remanere uno in loco colendi causa licet "). The Suebi lived between the Rhine and the Elbe . About the Germani, Caesar wrote: "No one has a particular field or area for himself, for the magistrates and chiefs give year by year to the people and the clans, who have gathered together, as much land and in such places as seem good to them and then make them move on after

990-403: A political elite in the logging industry, the causes of deforestation are more complex. The loggers have provided paid employment to former subsistence farmers. One of the outcomes of cash incomes has been rapid population growth among indigenous groups of former shifting cultivators that has placed pressure on their traditional long fallow farming systems. Many farmers have taken advantage of

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1080-482: A practice of slash-and-burn as one element of their farming cycle. Others employ land clearing without any burning, and some cultivators are purely migratory and do not use any cyclical method on a given plot. Sometimes no slashing at all is needed where regrowth is purely of grasses , an outcome not uncommon when soils are near exhaustion and need to lie fallow. In shifting agriculture, after two or three years of producing vegetable and grain crops on cleared land,

1170-407: A rich, swampy alluvium. These new environments were then exploited to develop intensive, irrigated fields. The change from shifting cultivation to intensive irrigated fields occurred in association with a rapid growth in population and the development of elaborate and highly stratified chiefdoms (Kirch 1984). In the larger, temperate latitude, islands of New Zealand the presumed course of events took

1260-768: A rusty-spotted cat was photographed in Bardia National Park for the first time, and in March 2016 also in Shuklaphanta National Park , both in Nepal. In Sri Lanka, there are a few records in montane and lowland rainforest . There are two distinct populations, one in the dry zone and the other in the wet zone. In 2016, it was recorded for the first time in Horton Plains National Park at elevations of 2,084–2,162 m (6,837–7,093 ft). Very little

1350-433: A shifting cultivation system is a growth in population. If no other changes occur within the system, for each extra person to be fed from the system, a small extra amount of land must be cultivated. The total amount of land available is the land being presently cropped and all of the land in fallow. If the area occupied by the system is not expanded into previously unused land, then either the cropping period must be extended or

1440-425: A short reddish grey fur over most of the body with rusty spots on the back and flanks. Four blackish lines run over the eyes, and two of them extend over the neck. Six dark streaks are on each side of the head, extending over the cheeks and forehead. Its chin, throat, inner side of the limbs and belly are whitish with tiny brownish spots. It has a rusty band on the chest. Its paws and tail are uniform reddish grey. It

1530-563: A society that is increasing in complexity and stratification. The second attempt to explain the relationships between simple agricultural societies and their environments is that of Ellen (1982, 252–270). Ellen does not attempt to separate use-values from social production. He argues that almost all of the materials required by humans to live (with perhaps the exception of air) are obtained through social relations of production and that these relations proliferate and are modified in numerous ways. The values that humans attribute to items produced from

1620-450: A year" (" Neque quisquam agri modum certum aut fines habet proprios, sed magistratus ac principes in annos singulos gentibus cognationibusque hominum, qui tum una coierunt, a quantum et quo loco visum est agri attribuunt atque anno post alio transire cogunt " [Book 6.22]). Strabo (63 BCE—c. 20 CE) also writes about the Suebi in his Geography (VII, 1, 3): "Common to all the people in this area

1710-453: A year" (" Vivunt et rigidi Getae, / immetata quibus iugera liberas / fruges et Cererem ferunt, / nec cultura placet longior annua "). A growing body of palynological evidence finds that simple human societies brought about extensive changes to their environments before the establishment of any sort of state, feudal or capitalist, and before the development of large scale mining, smelting or shipbuilding industries. In these societies agriculture

1800-480: Is about 27–28 °C (81–82 °F), while relative humidity varies from 70% to 83%. Well-drained reddish-brown soil is the predominant soil type , with poorly drained low humic grey soils found in the valley bottoms. Mainly alluvial soils form the beds of water courses The habitat surrounding at the reservoir includes marshes , the Walawe river and its tributaries, forests and grasslands . Dead trees standing in

1890-560: Is allowed to freely grow while the cultivator moves on to another plot. The period of cultivation is usually terminated when the soil shows signs of exhaustion or, more commonly, when the field is overrun by weeds. The period of time during which the field is cultivated is usually shorter than the period over which the land is allowed to regenerate by lying fallow. This technique is often used in LEDCs (Less Economically Developed Countries) or LICs (Low Income Countries). In some areas, cultivators use

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1980-840: Is called jhumming in India. Fallow fields are not unproductive. During the fallow period, shifting cultivators use the successive vegetation species widely for timber for fencing and construction, firewood , thatching , ropes, clothing , tools , carrying devices and medicines . It is common for fruit and nut trees to be planted in fallow fields to the extent that parts of some fallows are in fact orchards . Soil-enhancing shrub or tree species may be planted or protected from slashing or burning in fallows. Many of these species have been shown to fix nitrogen . Fallows commonly contain plants that attract birds and animals and are important for hunting . But perhaps most importantly, tree fallows protect soil against physical erosion and draw nutrients to

2070-473: Is determined mainly by natural selection and partly by human interference and adaptation, such as for example, the domestication of a wild species. Humans however have the ability to learn and to communicate their knowledge to each other and across generations. If most social systems have the tendency to increase in complexity they will, sooner or later, come into conflict with, or into "contradiction" (Friedman 1979, 1982) with their environments. What happens around

2160-625: Is known about the ecology and behaviour of the rusty-spotted cat in the wild. Captive ones are mostly nocturnal but also briefly active during the day. Most wild ones were also recorded after dark. At Horton Plain National Park in Sri Lanka, they were mostly recorded between sunset and sunrise, with limited daytime activity. Several individuals were observed hiding in trees and in caves. It feeds mainly on rodents and birds , but also preys on lizards , frogs , and insects . It hunts primarily on

2250-557: Is likely absent in evergreen forest . It prefers dense vegetation and rocky areas. In India, it was long thought to be confined to the south, but records have established that it occurs over much of the country. It was observed in eastern Gujarat 's Gir National Park , in Maharashtra 's Tadoba-Andhari Tiger Reserve and along India's Eastern Ghats . Camera trapping revealed its presence in Pilibhit Tiger Reserve in

2340-491: Is listed on CITES Appendix I . The Sri Lankan population is included on CITES Appendix II . The species is fully protected over most of its range, with hunting and trade banned in India and Sri Lanka. As of 2010, the captive population of P. r. phillipsi comprised 56 individuals in eight institutions, of which 11 individuals were kept in the Colombo Zoo in Sri Lanka and 45 individuals in seven European zoos. In Sri Lanka,

2430-451: Is much reduced, nutrient cycling becomes closed again, nutrients are extracted from the subsoil, soil fauna decreases, acidity is reduced, soil structure, texture and moisture characteristics improve and seed banks are replenished. The secondary forests created by shifting cultivation are commonly richer in plant and animal resources useful to humans than primary forests, even though they are much less bio-diverse. Shifting cultivators view

2520-596: Is none of these things. Stable shifting cultivation systems are highly variable, closely adapted to micro-environments and are carefully managed by farmers during both the cropping and fallow stages. Shifting cultivators may possess a highly developed knowledge and understanding of their local environments and of the crops and native plant species they exploit. Complex and highly adaptive land tenure systems sometimes exist under shifting cultivation. Introduced crops for food and as cash have been skillfully integrated into some shifting cultivation systems. Its disadvantages include

2610-400: Is not whether or how shifting cultivation was responsible for the extensive changes to landscapes and environments. Rather it is why simple societies of shifting cultivators in the tropical forest of Yucatán, or the highlands of New Guinea, began to grow in numbers and to develop stratified and sometimes complex social hierarchies? At first sight, the greatest stimulus to the intensification of

2700-413: Is reduced and the greater the loss of seeds of naturally occurring plant species from soil seed banks . In a stable shifting cultivation system, the fallow is long enough for the natural vegetation to recover to the state that it was in before it was cleared, and for the soil to recover to the condition it was in before cropping began. During fallow periods soil temperatures are lower, wind and water erosion

2790-408: Is seldom seen because of its rarity. Sri Lankan sambar deer , Sri Lankan axis deer , Indian muntjac , Sri Lankan spotted chevrotain , wild boar and water buffalo are among other mammal species. Golden jackal , Asian palm civet , toque macaque , tufted grey langur and Indian hare also inhabit the park. A study conducted in 1989 found that considerable numbers of golden palm civets inhabit

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2880-567: Is that of Esther Boserup (1965). Boserup argues that low intensity farming, extensive shifting cultivation for example, has lower labor costs than more intensive farming systems. This assertion remains controversial. She also argues that given a choice, a human group will always choose the technique which has the lowest absolute labor cost rather than the highest yield. But at the point of conflict, yields will have become unsatisfactory. Boserup argues, contra Malthus , that rather than population always overwhelming resources, that humans will invent

2970-531: Is that they can easily change residence because of their sordid way of life; they do not cultivate fields or collect property, but live in temporary huts. They get their nourishment from their livestock for the most part, and like nomads , pack all their goods in wagons and go on to wherever they want". Horace writes in 17 BCE ( Carmen Saeculare , 3, 24, 9ff.) about the people of Macedonia : "The proud Getae also live happily, growing free food and cereal for themselves on land they do not want to cultivate for more than

3060-801: Is the practice of shifting cultivation. During the Migration Period in Europe, after the Roman Empire and before the Viking Age, the peoples of Central Europe moved to new forests after exhausting old parcels. Forests were quickly exhausted; the practice had ended in the Mediterranean, where forests were less resilient than the sturdier coniferous forests of Central Europe. Deforestation had been partially caused by burning to create pasture. Reduced timber delivery led to higher prices and more stone construction in

3150-528: Is the smallest wild cat in Asia and rivals the black-footed cat as the world's smallest wild cat. It is 35 to 48 cm (14 to 19 in) in length, with a 15 to 30 cm (5.9 to 11.8 in) tail, and weighs only 0.9 to 1.6 kg (2.0 to 3.5 lb). The bushy tail is about half the length of the body. The distribution of the rusty-spotted cat is relatively restricted. It occurs mainly in moist and dry deciduous forests as well as scrub and grassland , but

3240-583: The Miocene around 14.45 to 8.38 million years ago . Analysis of mitochondrial DNA of all Felidae species indicates a radiation at around 16.76 to 6.46 million years ago . The Prionailurus species are estimated to have had a common ancestor between 8.16 to 4.53 million years ago , and 8.76 to 0.73 million years ago . The rusty-spotted cat possibly genetically diverged from this ancestor between 6.54 to 3.42 million years ago . Both models agree in

3330-621: The Philippines during the 1990s was preceded by major ecosystem disruptions in Vietnam , Laos and Cambodia in the 1970s and 1980s caused by warfare. Forests were sprayed with defoliants , thousands of rural forest dwelling people were uprooted from their homes and driven into previously isolated areas. The loss of the tropical forests of Southeast Asia is the particular outcome of the general possible outcomes described by Ellen (see above) when small local ecological and social systems become part of

3420-502: The plough , trading , mining and smelting , tanning , building and construction in the growing towns and constant warfare, including the demands of naval shipbuilding, were more important forces behind the destruction of the forests than was shifting cultivation. By the Middle Ages in Europe, large areas of forest were being cleared and converted into arable land in association with the development of feudal tenurial practices. From

3510-436: The 16th to the 18th centuries, the demands of iron smelters for charcoal, increasing industrial developments and the discovery and expansion of colonial empires as well as incessant warfare that increased the demand for shipping to levels never previously reached, all combined to deforest Europe. With the loss of the forest, so shifting cultivation became restricted to the peripheral places of Europe, where permanent agriculture

3600-791: The Indian Terai and in Nagzira Wildlife Sanctuary in Maharashtra. In western Maharashtra, the rusty-spotted cat is breeding in a human dominated agricultural landscape, where rodent densities are high. In December 2014 and in April 2015, it was photographed by camera traps in Kalesar National Park , Haryana . It was also recorded by camera traps in Mirzapur Forest Division of Uttar Pradesh in 2018. In March 2012,

3690-671: The Italic tribes became settled farmers. Classical writers described peoples who practiced shifting cultivation, which characterized the Migration Period in Europe. The exploitation of forests demanded displacement as areas were deforested. Julius Caesar wrote about the Suebi in Commentarii de Bello Gallico 4.1, "They have no private and secluded fields (" privati ac separati agri apud eos nihil est ") ... They cannot stay more than one year in

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3780-685: The Mediterranean area once had more forest; much had already been lost, and the remainder was primarily in the mountains. Although parts of Europe remained wooded, by the late Iron Age and early Viking Ages , forests were drastically reduced and settlements regularly moved. The reasons for this pattern of mobility, the transition to stable settlements from the late Viking period on, or the transition from shifting cultivation to stationary farming are unknown. From this period, plows are found in graves. Early agricultural peoples preferred good forests on hillsides with good drainage, and traces of cattle enclosures are evident there. In Italy, shifting cultivation

3870-515: The Mediterranean environment with its hot dry summers were wild fires that became more common following human interference in the forests. In Central and Northern Europe the use of stone tools and fire in agriculture is well established in the palynological and archaeological record from the Neolithic. Here, just as in Southern Europe, the demands of more intensive agriculture and the invention of

3960-603: The Pacific Islands, who within 500 years of their arrival around 1100 AD turned substantial areas from forest into scrub and fern and in the process caused the elimination of numerous species of birds and animals (Kirch and Hunt 1997). In the restricted environments of the Pacific islands, including Fiji and Hawaii, early extensive erosion and change of vegetation is presumed to have been caused by shifting cultivation on slopes. Soils washed from slopes were deposited in valley bottoms as

4050-699: The Roman Empire (Stewart 1956, p. 123). Although forests gradually decreased in northern Europe, they have survived in the Nordic countries. Many Italic peoples saw benefits in allying with Rome. When the Romans built the Via Amerina in 241 BCE, the Falisci settled in cities on the plains and aided the Romans in road construction; the Roman Senate gradually acquired representatives from Faliscan and Etruscan families, and

4140-434: The boundary of Sri Lanka's wet and dry zones . Plains dominate the topography, though there are also some mountainous areas. The Kalthota Range and Diyawini Falls are in the north of the park and the outcrops of Bambaragala and Reminikotha lie within it. The park has an annual rainfall of 1,500 millimetres (59 in), most of which falls during the months of October to January and March to May. The average annual temperature

4230-719: The breeding resident birds. White wagtail and black-capped kingfisher are rare migrants. A variety of water birds visit the reservoir, including cormorants , the spot-billed pelican , Asian openbill , painted stork , black-headed ibis and Eurasian spoonbill . The open parkland attracts birds of prey such as white-bellied sea eagle , crested serpent-eagle , grey-headed fish eagle , booted eagle , and changeable hawk-eagle . Landbirds are in abundance, and include Indian roller , Indian peafowl , Malabar pied hornbill and pied cuckoo . Oriental garden lizards , painted-lip lizards , mugger crocodiles , Asian water monitors , Bengal monitors and 30 species of snake are found in

4320-454: The causes of deforestation while logging was not. The apparent discrimination against shifting cultivators caused a confrontation between FAO and environmental groups, who saw the FAO supporting commercial logging interests against the rights of indigenous people (Potter 1993, 108). Other independent studies of the problem note that despite lack of government control over forests and the dominance of

4410-543: The central highlands of the island within the last 1,000 years, in association with the introduction of a crop new to New Guinea, the sweet potato (Golson 1982a; 1982b). One of the most striking signals of the relatively recent intensification of agriculture is the sudden increase in sedimentation rates in small lakes. The root question posed by these and the numerous other examples that could be cited of simple societies that have intensified their agricultural systems in association with increases in population and social complexity

4500-467: The changes were very slow population growth and the slow expansion of agriculture to meet the demands of this growth. This set in motion the first feedback loop, the "use-value" loop. As more forest was cleared there was a decline in wild food resources and protein produced from hunting, which was substituted for by an increase in domestic pig raising. An increase in domestic pigs required a further expansion in agriculture. The greater protein available from

4590-403: The clearing and burning of a 60,000 square metres (15 acres) swidden 440 km north of Helsinki . Birch and pine trees had been cleared over a period of a year and the logs sold for cash. A fallow of alder (Alnus) was encouraged to improve soil conditions. After the burn, turnip was sown for sale and for cattle feed. Shifting cultivation was disappearing in this part of Finland because of

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4680-516: The clearing and burning of standing forest and do not perceive often ecologically stable cycles of cropping and fallowing. Nevertheless, shifting cultivation systems are particularly susceptible to rapid increases in population and to economic and social change in the larger world around them. Rusty-spotted cat The rusty-spotted cat ( Prionailurus rubiginosus ) is one of the cat family's smallest members, of which historical records are known only from India and Sri Lanka . In 2012, it

4770-498: The dam, which was planted before the declaration of the park. Species recorded from the park include 94 plants, 21 fish, 12 amphibians, 33 reptiles, 184 birds (33 of which are migratory), and 43 mammals. Additionally 135 species of butterflies are among the invertebrates found in Udawalawe. Hopea cordifolia , Memecylon petiolatum , Erythroxylon zeylanicum , and Jasminum angustifolium are endemic floral species recorded from

4860-534: The development of irrigation systems. The controversy over Boserup's proposal is in part over whether intensive systems are more costly in labor terms, and whether humans will bring about change in their agricultural systems before environmental degradation forces them to. The estimated rate of deforestation in Southeast Asia in 1990 was 34,000 km² per year (FAO 1990, quoted in Potter 1993). In Indonesia alone it

4950-487: The environment arise out of cultural arrangements and not from the objects themselves, a restatement of Carl Sauer 's dictum that "resources are cultural appraisals". Humans frequently translate actual objects into culturally conceived forms, an example being the translation by the Duna of the pig into an item of compensation and redemption. As a result, two fundamental processes underlie the ecology of human social systems: First,

5040-441: The fallow period shortened. At least two problems exist with the population growth hypothesis. First, population growth in most pre-industrial shifting cultivator societies has been shown to be very low over the long term. Second, no human societies are known where people work only to eat. People engage in social relations with each other and agricultural produce is used in the conduct of these relationships. These relationships are

5130-567: The focus of two attempts to understand the nexus between human societies and their environments, one an explanation of a particular situation and the other a general exploration of the problem. In a study of the Duna in the Southern Highlands of New Guinea, a group in the process of moving from shifting cultivation into permanent field agriculture post sweet potato, Modjeska (1982) argued for the development of two "self amplifying feed back loops" of ecological and social causation. The trigger to

5220-416: The forest as an agricultural landscape of fields at various stages in a regular cycle. People unused to living in forests cannot see the fields for the trees. Rather they perceive an apparently chaotic landscape in which trees are cut and burned randomly and so they characterise shifting cultivation as ephemeral or 'pre-agricultural', as 'primitive' and as a stage to be progressed beyond. Shifting agriculture

5310-413: The forest. Cymbopogon confertiflorus grass species and Grewia tiliifolia bushes are common in the grasslands. Udawalawe is an important habitat for Sri Lankan elephants , which are relatively hard to see in its open habitats. Many elephants are attracted to the park because of the Udawalawe reservoir, with a herd of about 250 believed to be permanently resident. The Udawalawe Elephant Transit Home

5400-478: The forests of Udawalawe. Five species of mice also have been recorded from the park. The endemic Ceylon spiny mouse , known from Yala National Park , was recorded in Udawalawe in 1989. Indian bush rat and three species of mongoose are also recorded in the national park. Udawalawe is also a good birdwatching site. Endemics such as Sri Lanka spurfowl , red-faced malkoha , Sri Lanka grey hornbill , brown-capped babbler , and Sri Lanka junglefowl are among of

5490-581: The great cities and ceremonial centres vacant and overgrown with jungle vegetation. The causes of this decline are uncertain; but warfare and the exhaustion of agricultural land are commonly cited (Meggers 1954; Dumond 1961; Turner 1974). More recent work suggests the Maya may have, in suitable places, developed irrigation systems and more intensive agricultural practices (Humphries 1993). Similar paths appear to have been followed by Polynesian settlers in New Zealand and

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5580-425: The ground, making rapid, darting movements to catch its prey. It apparently ventures into trees to escape larger predators. Captive females and males both scent-mark their home range by spraying urine . The female's oestrus lasts five days, and mating is unusually brief. Since the female is likely to be vulnerable during this period, its brevity may be an adaptation to help it avoid larger predators. She prepares

5670-594: The high initial cost, as manual labour is required. Shifting cultivation was still being practised as a viable and stable form of agriculture in many parts of Europe and east into Siberia at the end of the 19th century and in some places well into the 20th century. In the Ruhr in the late 1860s a forest-field rotation system known as Reutbergwirtschaft was using a 16-year cycle of clearing, cropping and fallowing with trees to produce bark for tanneries , wood for charcoal and rye for flour (Darby 1956, 200). Swidden farming

5760-407: The improved road access to urban areas by planting cash crops, such as rubber or pepper as noted above. Increased cash incomes often are spent on chain saws, which have enabled larger areas to be cleared for cultivation. Fallow periods have been reduced and cropping periods extended. Serious poverty elsewhere in the country has brought thousands of land-hungry settlers into the cut-over forests along

5850-576: The land into permanent cultivation. Evidence that circumstances other than agriculture were the major causes for forest destruction was the recovery of tree cover in many parts of the Roman empire from 400 BC to around 500 AD following the collapse of Roman economy and industry. Darby observes that by 400 AD "land that had once been tilled became derelict and overgrown" and quotes Lactantius who wrote that in many places "cultivated land became forest" (Darby 1956, 186). The other major cause of forest destruction in

5940-409: The larger number of pigs increased human fertility and survival rates and resulted in faster population growth. The outcome of the operation of the two loops, one bringing about ecological change and the other social and economic change, is an expanding and intensifying agricultural system, the conversion of forest to grassland, a population growing at an increasing rate and expanding geographically and

6030-491: The logging roads. The settlers practice what appears to be shifting cultivation but which is in fact a one-cycle slash and burn followed by continuous cropping, with no intention to long fallow. Clearing of trees and the permanent cultivation of fragile soils in a tropical environment with little attempt to replace lost nutrients may cause rapid degradation of the fragile soils. The loss of forest in Indonesia, Thailand , and

6120-475: The manufacture of casks, pitch and charcoal, as well as being cleared for agriculture. The intensification of trade and as a result of warfare, increased the demand for ships which were manufactured completely from forest products. Although goat herding is singled out as an important cause of environmental degradation , a more important cause of forest destruction was the practice in some places of granting ownership rights to those who clear felled forests and brought

6210-517: The middle of the 20th century amidst the sweeping changes that occurred in Europe over that period, suggests they were adaptive and in themselves, were not massively destructive of the environments in which they were practiced. The earliest written accounts of deforestation in Southern Europe begin around 1000 BC in the histories of Homer , Thucydides and Plato and in Strabo 's Geography . Forests were exploited for ship building, and urban development,

6300-417: The migrants abandon it for another plot. Land is often cleared by slash-and-burn methods—trees, bushes and forests are cleared by slashing, and the remaining vegetation is burnt. The ashes add potash to the soil. Then the seeds are sown after the rains. Shifting cultivation is a form of agriculture or a cultivation system in which, at any particular point in time, a minority of 'fields' are in cultivation and

6390-419: The obtaining of materials from the environment and their alteration and circulation through social relations, and second, giving the material a value which will affect how important it is to obtain it, circulate it or alter it. Environmental pressures are thus mediated through social relations. Transitions in ecological systems and in social systems do not proceed at the same rate. The rate of phylogenetic change

6480-472: The park. Lantana camara and Phyllanthus polyphyllus are invasive weeds affecting the food plants of the elephants. Occasions of elephants being shot with illegal muzzleloader guns has been reported. In the six months ending in August 2009, the park earned revenue of Rs. 18.2 million. From 1994 to 2001 some 423,000 people visited the park, 20% of them foreigners. For the 1998–2001 period average annual revenue

6570-480: The park. Garra ceylonensis is an endemic fish species recorded in park. Introduced Oreochromis spp., giant gourami , catla , and rohu are important food fish species found in the reservoir. Clearing natural forests and planting monospecies cultures such as pine and eucalyptus are causing reduced water levels in the Walawe river. Encroachment by human settlements, poaching , illegal logging , gem mining, overgrazing and chena farming are major threats to

6660-470: The park. Hopea cordifolia is found along the river along with Terminalia arjuna . Panicum maximum and Imperata cylindrica are important food sources for the elephants. Chloroxylon swietenia , Berrya cordifolia , Diospyros ebenum , Adina cordifolia , Vitex pinnata , Schleichera oleosa , and Diospyros ovalifolia are the common taller trees. Terminalia bellirica and Phyllanthus emblica are plants of medicinal value found in

6750-463: The point of "contradiction" will determine the extent of the environmental degradation that will occur. Of particular importance is the ability of the society to change, to invent or to innovate technologically and sociologically, in order to overcome the "contradiction" without incurring continuing environmental degradation, or social disintegration. An economic study of what occurs at the points of conflict with specific reference to shifting cultivation

6840-464: The reservoir are visual reminders of the extent of forest cover before the construction of the Udawalawe Dam . Green algae , including Pediastrum and Scenedesmus spp., and blue green algae species such as Microsystis , occur in the reservoir. Areas of open grassland are abundant as a result of former chena farming practices. There is a plantation of teak beyond the southern boundary, below

6930-505: The rise and fall of the Mayan civilization of the Yucatán Peninsula and shifting cultivation were raised and continue to be debated today. Archaeological evidence suggests the development of Mayan society and economy began around 250 AD. A mere 700 years later it reached its apogee, by which time the population may have reached 2,000,000 people. There followed a precipitous decline that left

7020-475: The rusty-spotted cat having been the first cat of this lineage that diverged, followed by the flat-headed cat ( P. planiceps ) and the fishing cat ( P. viverrinus ). The following cladogram shows the phylogenetic relationships of the rusty-spotted cat as derived through analysis of nuclear DNA: Leopard cat Fishing Cat Flat-headed cat Rusty-spotted cat Pallas's cat ( O. manul ) other Felinae lineages Pantherinae The rusty-spotted cat has

7110-521: The smaller islands, were accompanied by population growth, the competition for the occupation of the best environments, complexity in social organization, and endemic warfare (Anderson 1997). The record of humanly induced changes in environments is longer in New Guinea than in most places. Agricultural activities probably began 5,000 to 9,000 years ago. However, the most spectacular changes, in both societies and environments, are believed to have occurred in

7200-411: The surface from deep in the soil profile. The relationship between the time the land is cultivated and the time it is fallowed are critical to the stability of shifting cultivation systems. These parameters determine whether or not the shifting cultivation system as a whole suffers a net loss of nutrients over time. A system in which there is a net loss of nutrients with each cycle will eventually lead to

7290-463: The wild is unknown. Habitat loss and the spread of cultivation are serious problems for wildlife in both India and Sri Lanka. Although there are several records of the rusty-spotted cat in cultivated and settled areas, it is not known to what degree these populations are able to persist in such areas. There have been occasional reports of rusty-spotted cat skins in trade. In some areas, it is hunted for food or as livestock pest. The Indian population

7380-441: Was US$ 280,000. Postage stamps bearing the images of four wild animals of Udawalawe were issued on 31 October 2007 in the series "National Parks of Sri Lanka", featuring water buffalo, Sri Lankan elephant, ruddy mongoose and tufted grey langur. Shifting cultivation Shifting cultivation is an agricultural system in which plots of land are cultivated temporarily, then abandoned while post-disturbance fallow vegetation

7470-473: Was also recorded in the western Terai of Nepal . Since 2016, the global wild population is listed as Near Threatened on the IUCN Red List as it is fragmented and affected by loss and destruction of its prime habitat, deciduous forests . Felis rubiginosa was the scientific name used by Isidore Geoffroy Saint-Hilaire in 1831 for a rusty-spotted cat specimen from Pondicherry , India. Prionailurus

7560-412: Was established in 1995 for the purpose of looking after abandoned elephant calves within the park. A total of nine calves, on two occasions in 1998 and 2000, with another eight calves in 2002, were released in the park when old enough to fend for themselves. The rusty-spotted cat , fishing cat and Sri Lankan leopard are members of the family Felidae present in Udawalawe. The Sri Lankan sloth bear

7650-468: Was estimated 13,100 km² per year were being lost, 3,680 km² per year from Sumatra and 3,770 km² from Kalimantan , of which 1,440 km² were due to the fires of 1982 to 1983. Since those estimates were made huge fires have ravaged Indonesian forests during the 1997 to 1998 El Niño associated drought. Shifting cultivation was assessed by the Food and Agriculture Organization (FAO) to be one of

7740-665: Was no longer used by the common era. Tacitus describes it as a strange cultivation method, practiced by the Germans. In 98 CE, he wrote about the Germans that their fields were proportional to the participating cultivators but their crops were shared according to status. Distribution was simple, because of wide availability; they changed fields annually, with much to spare because they were producing grain rather than other crops. A W Liljenstrand wrote in his 1857 doctoral dissertation, "About Changing of Soil" (pp. 5 ff.), that Tacitus discusses shifting cultivation: "arva per annos mutant". This

7830-536: Was practised in Siberia at least until the 1930s, using specially selected varieties of "swidden-rye" (Steensberg 1993, 98). In Eastern Europe and Northern Russia the main swidden crops were turnips, barley, flax, rye, wheat, oats, radishes and millet . Cropping periods were usually one year, but were extended to two or three years on very favourable soils. Fallow periods were between 20 and 40 years (Linnard 1970, 195). In Finland in 1949, Steensberg (1993, 111) observed

7920-524: Was proposed by Nikolai Severtzov in 1858 as a generic name . Prionailurus rubiginosus phillipsi was proposed by Reginald Innes Pocock in 1939 who described a specimen from Central Province, Sri Lanka and subordinated both to the genus Prionailurus . Phylogenetic analysis of the nuclear DNA in tissue samples from all Felidae species revealed that the evolutionary radiation of the Felidae began in Asia in

8010-438: Was the driving force in the economy and shifting cultivation was the most common type of agriculture practiced. By examining the relationships between social and economic change and agricultural change in these societies, insights can be gained on contemporary social and economic change and global environment change, and the place of shifting cultivation in those relationships. As early as 1930 questions about relationships between

8100-519: Was uneconomic, transport costs constrained logging or terrain prevented the use of draught animals or tractors. It has disappeared from even these areas since 1945, as agriculture has become increasingly capital intensive, rural areas have become depopulated and the remnant European forests themselves have been revalued economically and socially. Classical authors mentioned large forests, with Homer writing about "wooded Samothrace ", Zakynthos , Sicily , and other woodlands. These authors indicated that

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