Soil erosion in China based on the 2000 national remote sensing survey |
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Authors: | Xu Feng PhD Guo Suoyan Zhang Zengxiang |
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Institution: | 1. Institute of Remote Sensing Applications, CAS, Beijing 100101, China;Monitoring Center of Soil and Water Conservation, Ministry of Water Resources, Beijing 100053, China 2. Monitoring Center of Soil and Water Conservation, Ministry of Water Resources, Beijing 100053, China 3. Institute of Remote Sensing Applications, CAS, Beijing 100101, China |
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Abstract: | This paper discussed the spatial distribution of soil erosion in China at the end of the 20th century based on the second
national soil erosion survey. The result indicated soil erosion is still the prime environmental problem in China. Soil erosion
mainly occurs in the western regions of China, and the slight erosion type, ion the whole, exerts the greatest impact on soil
erosion pattern. The distribution of water erosion shows the impact of landforms: slight water erosion mainly in mountainous
and hilly areas, and half of violent water erosion on the loess landforms. Farmland, forestland and grassland are the major
land use types of slight hydraulic erosion distribution, while the serious hydraulic erosion and slight wind erosion mainly
occur on grassland. Thus, the conservation of the grassland is the key to either hydraulic and wind erosion control. The huangmian
soil (a major type of cultivated soil developed from loess mother material) is the one facing the most serious threat from
soil erosion in Chinas soil resources. Further discussion on the soil erosion distribution still needs more research on the
method and relevant data analysis. |
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Keywords: | soil erosion spatial distribution remote sensing survey China |
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