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- W2390010111 abstract "Landform is one of the most important factors influencing soil loss.Developing and establishing soil erosion models is an important approach to monitor and evaluate soil loss and soil and water conservation.However,for different scales and different purposes of research,the topographic factors to be considered are selected differently.In this paper,firstly,the topographical indices employed in international and domestic soil erosion models and their extraction technology are reviewed.The result of the review suggests that,regardless of the models employed,be they statistic models based on the experimental materials or models based on the soil erosion mechanism,the topographical indices used mostly derive from small areas such as slope land or small watersheds.Research at the regional scale has been limited.Based on the analysis of significance in geomorphology and soil erosion,this paper concludes that slope gradient is the optimal index used in micro-scale research.Relief,drainage networks density,landform roughness and variance coefficient in elevation,which are regional characteristics,are better used in macro-scale research.However,to determine which regional index or indices are optimal in a specific macro-scale study,concrete research or experimentation must be carried out." @default.
- W2390010111 created "2016-06-24" @default.
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- W2390010111 date "2004-01-01" @default.
- W2390010111 modified "2023-09-25" @default.
- W2390010111 title "Analysis and selection of topographical indices influencing soil loss on different scales" @default.
- W2390010111 hasPublicationYear "2004" @default.
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