基于水沙协同图谱的流域自适应能力研究

Auto-adapted ability of river basin based on water and wand coordination atlas

黄河下游河床所淤积的泥沙主要来自于黄河中游的粗泥沙集中来源区,在提出水沙协同性、流域的自适应能力概念基础上,以流域为单元,建立了粗泥沙集中来源区各流域的水沙协同关系图谱。根据水沙协同图谱的不同变化态势,分析了各流域的自适应能力差异,结果表明:皇甫川流域较强的流域自适应能力使得该流域的水沙协同性一直较稳定;孤山川、窟野河、佳芦河和秃尾河流域的水沙协同性存在异常值,但是孤山川、窟野河和佳芦河流域仍有着较强的河流自适应能力,秃尾河流域的自适应能力较弱。总体而言,人类活动的干预有利于维持流域的生态稳定性。

The silts in the downstream river bed of the Yellow River mainly come from the Coarse Sand Source Regions of middle reaches of the Yellow River. The paper has raised some concepts, the water and sand cooperative , the basin auto -adapted ability. The paper has established the water and sand conspiracy relation of Coarse Sand Source Regions, According to the water and sand coordination atlas＇s different change situation,analyzed the differ- ence of auto - adapted ability among basins. The results are as follows ： the water and sand cooperative has been sta- ble in Huangfuchuan basin because of its strong auto - adapted ability. The water and sand cooperative of the four basins, Gushanehuan, Kuyehe, Jialuhe and Tuweihe basin have existenced unusual value. But Gushanchuan, Kuyehe and Jialuhe basin still have the strong auto- adapted ability. Tuweihe basing auto -adapted ability was weak. Overall,human activity＇s intervention is advantageous to maintenance the basin ecology stability.