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- W2392342991 abstract "Soil erosion intensity of Zhifanggou basin,a small sub-catchment of Yellow River basin,was assessed with rapid soil erosion assessment model,under three proportional scales of 1∶ 200 000,1∶ 50 000 and 1∶ 10 000 respectively based on unit of minimum polygon.Soil erosion scale effect was performed by comparing and analyzing a variety of soil erosion assessment results under different environmental factors of different proportional scales,then quantitative studies for the influence of single environmental factor were performed with scenario analysis method.The assessment results indicates the average intensity erosion owns the broadest distribution in area.When the proportional scale changed from 1∶ 200 000 to 1∶ 10 000,the number of minimum polygons in the assessment results increased from 3 to 898,and ranking distribution eigen index increased from 1.04 to 2.42.The distribution of soil erosion intensity of various ranks became more uniform,while more information quantity in the results of assessment was included.Quantitive influence of propotional modification for single environmental factor on soil erosion assessment was computed,the single factor data at 1∶ 10 000 scale was replaced by those at 1∶ 50 000 and 1∶ 200 000 in one time,while other environmental factors at 1∶ 10 000 scale were fixed,then soil erosion intensity was assessed at this scale.The comparison between the assessment result of the replaced propotion and the prime results shows the modification of topographical data propotion leads to the highest augmentation of deviation,which means topographical factor is the most influential to the assessment of soil erosion for Zhifanggou basin." @default.
- W2392342991 created "2016-06-24" @default.
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- W2392342991 date "2011-01-01" @default.
- W2392342991 modified "2023-09-23" @default.
- W2392342991 title "Soil Erosion Assessment under Various Scales and Scale Effects" @default.
- W2392342991 hasPublicationYear "2011" @default.
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