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[1]JIAO Jian.Study on Spatial Variation of Soil Erosion in Northeastern China[J].Research of Soil and Water Conservation,2010,17(03):1-6,63.

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Study on Spatial Variation of Soil Erosion in Northeastern China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 03 Page number: 1-6,63 Column: Public date: 2010-06-20

Title:: Study on Spatial Variation of Soil Erosion in Northeastern China

Author(s):: JIAO Jian; School of Geography, Beijing Normal University, Beijing 100875, China

Keywords:: soil erosion; soil loss equation; spatial variation; Northeastern China

CLC:: S157

DOI:: -

Abstract:: Severe soil loss of Northeastern China gives rise to widespread concern about it. But researches in soil erosion are only limited to certain spots now. To give further support to the plan of soil conservation, overall investigation of the temporal variation of soil erosion is urgently needed. To calculate soil loss amount, this paper established soil loss equation of Northeastern China by using precipitation records of climate stations, runoff and sediment yields data from plots and sense remote data. Then the application of the soil loss equation was validated and the temporal variation of soil erosion was analyzed. The results showed that the area of soil erosion was 6.34×10⁵km² in the Northeastern China, which was 50.8% of the total area. The intensity of soil erosion increased from the northwest to southeast, while landforms made the trend became more complex. Severe soil erosion happened in the hilly regions of the Songhua river basin and the western part of the Liao river basin, and the region with rich precipitation in the eastern part of the Liao river basin. This analysis will make important suggestion for the plan of soil conservation in this region.

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