WANG Juan, ZHUO Jing. Quantitative Assessment of Soil Erosion in Areas Under Grain for Green Project in Loess Plateau of Northern Shaanxi Province Based on GIS and RS[J]. Bulletin of Soiland Water Conservation, 2015, 35(1): 220-223.
WANG Juan, ZHUO Jing. Quantitative Assessment of Soil Erosion in Areas Under Grain for Green Project in Loess Plateau of Northern Shaanxi Province Based on GIS and RS[J]. Bulletin of Soiland Water Conservation, 2015, 35(1): 220-223. DOI: 10.13961/j.cnki.stbctb.2015.01.041.
[Objective] To analyze the temporal and spatial variability of soil erosion intensity in Loess Plateau of Northern Shaanxi Province in 2000
2007 and 2012
and to provide the support for the implementation of grain for green project in this region.[Methods] With the support of GIS and RS technology
we conducted a quantitative research based on the RUSLE model and ArcGIS 9.2 and analyzed the temporal and spatial variability of soil erosion intensity in Northern Shaanxi in 2000
2007 and 2012.[Results] During the 13 years
soil erosion tended to decrease over time
and the soil erosion in 2012 dropped by 1 162 t/(km2·a) compared with 2000. Compared with the 2% of the total area in 2000
the area with an erosion modulus less than 2 500 t/(km2·a) in Zichang County accounted for 26% in 2012. The soil erosion was moderate in 2000
but was slight in 2012 in most areas. The drastic change mainly occurred in the hilly areas in Zichang
Ansai and Zhidan Counties.[Conclusion] Vegetation coverage was the main factor affecting the soil erosion
and conversion of slope cropland to forest or pasture is playing an important role in decreasing soil loss.
Renard K G, Foster G R, Weesies G A, et al. Prediction rainfall erosion by water:A guide to conservation planning with the revised universal soil loss equation(RUSLE)[M]. Washington D C:US Department of Agriculture, 1997.