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Study on Spatial-temporal Feature of Land Use and Land Cover Under Defferent Background of Soil Er Article Abstract

Abstract by : TsingHua
Visits : 20  words: 300   Published: September 28, 2001
The research of Soil Erosion', 1, 1598626)"; href="/tags/soil-erosion/">soil erosion is significantly important for better understanding land use,land cover change and environmental management for sustainable development. In order to study soil Erosion in China, the technologies of Remote Sensing and Geographical Information System were used to analyze the spatial distribution of spatial-temporal feature of soil erosion under the different land use and land cover. It is shown that the main types of soil erosion are water erosion, wind erosion and frozen erosion in China. The maximum of percentage of types of water erosion and frozen erosion are slight water erosion and slight frozen erosion, the area of water erosion and frozen erosion is decreasing with increase of erosion intensity. The maximum of percentage of types of wind erosion is fierce wind erosion, the area of fierce wind erosion is about 5.5% of total area of soil erosion. So, the wind erosion is the most serious environment and socioeconomic problems in China, especially in the north China where sandy desertification is developing rapidly over large areas and receiving widespread attention. Meantime, sandy desertification processes aggravate wind erosion, deteriorate soil physical and chemical properties, reduced land productivity. So, at present how to keep dry soil from wind erosion and keep soil away desert is the most pressing task for us to study.

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