辽河河道最小生态流量研究

Minimum ecological discharge of Liaohe River

在维持河流水体生存的临界条件和河道断面形态特性的基础上,对最小生态流量的内涵和意义、计算方法以及临界点的成因进行分析.选取辽河不同河道的控制断面,从生态需水最基本的层次即水量的角度出发,计算河道的最小生态流量百分率,并分析其特点,初步建立了辽河河道最小生态流量控制标准.

Based on the viewpoint of maintenance of the critical survival condition of river water and characteristics of geomorphology of river sections, the connotation and computational approach for the minimum ecological discharge and cause of critical points were analyzed. With control sections of different channels of the Liaohe River as examples, the rates of minimum ecological discharge of the fiver channels were calculated and their characteristics were analyzed from the aspect of water quantity, which is the most fundamental factor of ecological water demand. As a result, the control criterion for minimum discharge of the Liaohe River was deduced.