摘要
河流栖息地连通性对河流生态系统的健康与稳定具有重要作用,闸坝改变了河流的连通性,对水生生物的栖息地产生一定影响。利用树状水系连通性指数的方法,对潍河流域诸城段的连通性进行了研究,发现从1980-2010年,研究段水系的连通性由56.11下降为31.57,降低了43.7%;河流的连通性随着闸坝可通过能力p的增加逐渐增加,并且增加的幅度越来越大,尤其当p>0.8时,河流连通性明显增加;利用可通过能力对连通性的影响,计算拆除每个闸坝后整个水系连通性的增量,确定闸坝拆除的优先次序。
The river habitat connectivity plays an important role in the health and stability of the river ecosystem.However,sluices and dams change the river connectivity and have effects on the habitat of aquatic organisms.Dendritic Connectivity Index（DCI）is used to study the connectivity of the Weihe Basin in Zhucheng City in this paper.The study shows that the connectivity of river system decreased from 56.11 to 31.57,the connectivity decreased about 43.7%from 1980 to 2010.The river connectivity gradually increases with the increase of sluice and dam passability,and the amplitude is increasing.River connectivity has a sharp increase when p〉0.8.The prioritization of sluice and dam removal is determined according to the connectivity increment of river systems after removing every sluice and dam.
出处
《中国农村水利水电》
北大核心
2016年第2期53-56,共4页
China Rural Water and Hydropower
基金
国家水专项资金资助项目(2008ZX07010-008-04)
山东省科技攻关项目(2009GG20006010)
