Technology Application |
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The Ration Spatial Distribution of Soil Loss Based on Remote Sensing and GIS in Xuanhua County |
JI Cui-cui 1,2 , LI Xiao-song 1, ZENG Yuan 1, YAN Na-na 1, WU Wen-bo 2, WU Bing-fang 1 |
1.Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China;2.School of Gematics, Liaoning Technical University, Fuxin 123000, China |
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Abstract Supported by remote sensing and GIS technology, the authors quantitatively evaluated the volume of soil
loss and the soil loss intensity in Xuanhua County in 2000 on the basis of RUSLE model, and made a characteristic
analysis of the spatial distribution of soil loss in this county. The results show that the soil erosion area (with
the erosion stronger than mild erosion) of Xuanhua County in 2000 was 982.85 km2, accounting for 39.25% of the
total area of Xuanhua County. The average soil erosion modulus was 13.92 t•hm-2•a-1, belonging to mild erosion. The
steeper the slope, the more probably the strongest erosion happened. On the whole, the slope belt of 15°~25° was
the belt subjected to the largest proportion of eroson. Soil erosion in Xuanhua County is mainly concentrated on
the irrigation grassland and the dry land, and the soil erosion area of these two land types in Xuanhua County
accounted for 93.897% of the total soil erosion area in 2000.
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Keywords
Coastline
Remote sensing
Evolutionary trend and stability
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Issue Date: 29 June 2010
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