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- W2386100948 abstract "Choosing type black soil area of Northeast China which locates in the Wuyuer River and Nemoer River basin as study area,taking SPOT5 and Corona imagery as data source,gully distribution data in 1965 and 2005 were got.Then the gully density was taken as index,and the spatial maps of gully density in 1965 and 2005 were got.At the same time,the 1∶50 000 relief maps were taken as data source,DEM was obtained and the geomorphic factors were extracted.Based on the above data,on the support of GIS spatial analysis function,the characteristics of gully spatial dynamics and change characteristic in 40 years were analyzed.It showed that gully density had obviously increased during the past 40 years.Gully density in each class had the trend to increase to the higher class.The dynamic of gully erosion take North-West to South-East as axial direction and corresponding decrease by the cores to sides.In the vertical direction,gully erosion distribution appeared the layered law,and the maximum of gully density was in the elevation of 250~275 m.It indicated that the hummock-slope was the most possible area to occur gully erosion.According to the slope difference,it showed that gully erosion appeared the trend to come into being on the higher slope.In 1965,the erosion in the area that slope is more than 5° was much lower,but in 2005 it had much serious.The aspect analysis indicated that aspect was not the key factor to cause the gully erosion in black soil area of Northeast China." @default.
- W2386100948 created "2016-06-24" @default.
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- W2386100948 date "2012-01-01" @default.
- W2386100948 modified "2023-10-07" @default.
- W2386100948 title "Spatial Pattern Change and Topographic Differentia of Gully Erosion in the Type Black Soil Area of Northeast China during the Past 40 Years" @default.
- W2386100948 hasPublicationYear "2012" @default.
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