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ABSTRACT: Threshold of environmental elements in drainage basin sediment yield refers to, under effect of climate, underlying surface
and human activity, a turning point of abrupt changes in drainage sediment yield related to environmental element characteristics.
Previous studies on threshold of sediment yield of relevant drainage basins were mainly concentrated on impact of natural
zones with a few researches on impact of other environmental elements. Particularly studies on compound environmental element
threshold in drainage basin sediment yield remain blank today. Studies indicate that sediment yield in drainage basins is
affected by compound interactions and complex actions. Based on single element analysis, the present paper gives quantitatively
compound threshold of environmental elements affecting sediment yield of the drainage basin between Hekouzhen and Tongguan
in the middle Yellow River by the method of multi-variant, polynomial formula regression analysis.
Science in China Series D Earth Sciences 48(2):230-240. · 1.59 Impact Factor