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- W2375707943 abstract "Soil erosion is one of the important reasons causing ecological fragility in the wood-grass ecotone of Northeast China.Using GIS technology,and integrating influence of rainfall,terrain,soil erodibility,and vegetation cover,the paper analyzes sensitivity of spatial-temporal variation of soil erosion in the wood-grass ecotone of the study area during the period of 1990-2005.The results show that the soil erosion sensitivity in the wood-grass ecotone is dominated by medium-sensitivity and then light and high sensitivity.In 2005,the area of medium-sensitivity was 370021.36 km2,the areas of light-sensitivity and high-sensitivity were respectively 115544.38 km2 and 38934.25 km2,or being respectively 69.98%,21.83%,and 7.36%.The medium-sensitivity regions are mainly distributed in the Great Hing'an Mountains,light-sensitivity regions mainly occur in the eastern and western plains,meanwhile the highly-sensitivity regions are mainly distributed in the wood-grass ecotone between Yanshan Mountain and the southern part of the Great Hing'an Mountains.In terms of time sequence,the area of light-sensitivity regions and medium-sensitivity regions increased but that of highly-sensitivity regions had a drop of 54.10%,indicating this eco-environmental situation is getting improvement.By overlapping and ordering method,the paper identifies the key factors and their spatial distribution.The area of land fluctuating degree is the most significant factor in light-sensitivity region accounting for 78.32%,and the vegetation cover is the most significant factor in medium-sensitivity region being 81.17%.It's worthy noting that the area of rain erosivity is the most significant factor in highly-sensitivity region being 81.07%.So the former two are the key factors affecting soil erosion sensitivity,while the latter,as a trigger affecting soil erosion sensitivity." @default.
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- W2375707943 date "2012-01-01" @default.
- W2375707943 modified "2023-09-28" @default.
- W2375707943 title "Assessment of Soil Erosion Sensitivity and Key Factors Identification in the Wood-Grass Ecotone of Northeast China" @default.
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