【摘要】 本文基于生态水文学原理,结合流域三生用水格局以及污染源分布格局和污染物排放强度格局,以流域内水生态系统及其影响因素为研究对象,运用GIS技术,对太子河干流水体及其周围陆地所在的空间单元进行分类与整合,生成了11个太子河流域生态需水估算分区,分区内具有相对一致的生态需水特性;在分区的基础上,结195合6—太2子00河8干年流以水及生19态56特—征19,73通年过两水个文实系测列流分量析系,列选,择采小用市水、文本学溪法、对葠观窝音、阁辽水阳库、以小下林的子7个和分唐区马进寨行6个了水逐文月河站道内生态需水估算,估算结果显示了近天然水文情势的生态水量过程变化,有助于太子河干流水环境改善以及水生态恢复;估算的各站年生态需水量占年径流量的30%左右,能够在不影响现有水资源利用格局的前提下,通过合理的水资源优化配置,实现生态需水要求。更多还原

【Abstract】 This paper describes a method of dividing eco-region for instream flow calculation and provides an example of instream flow calculating based on eco-region.Through analyzing natural elements and aquatic ecological characteristics of the Taizi River Basin,and considering the pattern of ecological and economic water use,the spatial distribution of pollution source,and the discharging intensity of pollution,the 11 eco-regions for instream flow calculation have been generated based on GIS.Furthermore,the instream flow of the main stream of the Taizi River below for the 7 eco-regions downstream of the Guanyinge Reservoir has been calculated,using the series data of 1956-2008 and 1956-1973.The result from the calculation demonstrates that the instream flow has a near natural flow regime and the annual instream flow accounts for about 30% of the annual runoff at any hydrologic station.The instream flow is available by the improvement of water environment and the restoration of aquatic ecosystem.更多还原