By reasonable selection of different factors in the Usual Soil Loss Equation (USLE), the serial of soil erosion maps of Sanjiang Plain in 1951, 1976, 1986 and 2000 are obtained under the support of GIS. The calculated result is approved to be valid comparison with the result of the second remote sensing survey for soil erosion of China in 2000. Then the change of soil erosion of the 6 watersheds in the Sanjiang Plain is analyzed to indicate that the way of land use impacts soil erosion significantly, and the reclamation is the main reason for the area increase intensity and of the soil erosion. The expansion rate of soil erosion slowed down obviously after the reduce of wasteland reclamation and replanting some dry land to paddy field.
BU Kun, ZHANG Shu-Wen, YAN Ye-Chao, WANG Wen-Juan, ZHANG Yu-Bo
. Soil Erosion Change Characteristic of Different Watersheds of Sanjiang Plain during the Past 50 Years[J]. SCIENTIA GEOGRAPHICA SINICA, 2008
, 28(3)
: 361
-368
.
DOI: 10.13249/j.cnki.sgs.2008.03.361
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