Abstract
Taking once during as the study area, the course by using the DPSIR model and a lot of literatures screening of high frequency index, and quantitative analysis combined with the expert appraisal method, on once during regionalization index system establishment, course planning method was studied, determining the topographical features, water loss and soil erosion prevention and control system, land exploitation and utilization of direction, after years of average rainfall, population density, coverage of trees, soil and water loss area total area percentage as indicators of dividing the partition of soil and water conservation, such as in the villages and towns as the basic unit. Through principal component analysis, cluster analysis, the GIS space superposition method for regionalization, will once during divided into course will once during is divided into six course four areas: the southern mountain freeze-thaw district, Zhongshan in southern hilly water conservation ecological reserve, with low hills in southern soil conservation area, central oasis environment farmland protection area in northern desert ecological maintenance, low mountain in northern wind sand area, ecological maintenance area 6 level 4 area of water conservation, determine the various functional areas of soil erosion prevention and control of system layout, the direction of land use, for once during planning of soil and water conservation and soil erosion prevention and control system of the course layout provides the scientific basis.
Highlights
The soil erosion types in Changji prefecture are complex and diverse, which can be divided into wind erosion, hydraulic erosion and other main types
The soil erosion area of the study area is 46,300 km[2], accounting for 5.2% (4.63/88.54) of the soil erosion area of Xinjiang, and 63.0% (4.63/7.35) of the territorial land of the whole prefecture, among which the hydraulic erosion area is 4,300 km[2] and the wind erosion area is 42,000 km[2].According to the grade of soil erosion intensity, the areas of mild, moderate, intense, extreme and violent erosion are 26,900 km[2, 710,000] km2, 74,400 km[2, 39,900] km2 and 100,000 km[2], respectively, accounting for 58.16%, 15.29%, 15.95%, 8.42% and 2.19% of the total soil erosion area, among which the proportion of mild erosion area is the largest, reaching 58.16%.Soil erosion is a serious threat to the living environment of local people
By reading a large number of soil and water conservation districts literature, most of these studies are some indicators of regional soil and water loss is analyzed, and does not take into account different indicators relate to each other and influence each other, the question of causality as the social economy and environment, caused by human activities and environmental status of the feedback effect of the society, cannot reflect the various aspects of different factors, the selection of index for soil and water loss can only have a vague guidance, is not specific to every aspect of society, economy and nature
Summary
Changji Hui Autonomous Prefecture (hereinafter referred to as "Changji Prefecture") is one of the administrative regions under the jurisdiction of the Xinjiang Uygur Autonomous Region.Is located in tianshan mountain, the southeast margin of junggar basin, with east, Shihezi city west, south and Turpan city, general Mongolian autonomous prefecture of adjacent, north border with Tuscaloosa, Altay region, the northeast border with Mongolia, border 227.3 km, is a new north road, the ancient "silk road" to the path to the countries of central Asia and Europe. The terrain of Changji Autonomous Prefecture is high in the south and low in the north, and slopes from the southeast to the northwest, with the Tianshan mountains in the south, the vast alluvial plain in the middle and the vast desert basin in the north. This area is the Northern Slope of The Tianshan Mountains stretching across the south, which is commonly known as the "Northern Slope of Tianshan Mountains". Hydraulic erosion has a small area, it is highly destructive and has a large influence area It is one of the main forms of soil erosion in Changji Prefecture. The soil erosion area of the study area is 46,300 km[2], accounting for 5.2% (4.63/88.54) of the soil erosion area of Xinjiang, and 63.0% (4.63/7.35) of the territorial land of the whole prefecture, among which the hydraulic erosion area is 4,300 km[2] and the wind erosion area is 42,000 km[2].According to the grade of soil erosion intensity, the areas of mild, moderate, intense, extreme and violent erosion are 26,900 km[2, 710,000] km 400 km[2, 39,900] km and 100,000 km[2], respectively, accounting for 58.16%, 15.29%, 15.95%, 8.42% and 2.19% of the total soil erosion area, among which the proportion of mild erosion area is the largest, reaching 58.16%.Soil erosion is a serious threat to the living environment of local people
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