大沽河流域辇止头村水生态规划研究

Research on Water Ecological Planning of Nianzhitou Village in Dagu River Basin

摘要: 乡村水生态环境质量影响流经的河流水质，是保障河流水质需要解决的关键问题。利用ArcGIS空间分析功能，水文分析模块和最小耗费距离模型，分析了辇头村水生态环境质量的现状，得出了生态源斑块数量占比少，生态廊道不足，无法形成生态网，生态韧性差。生活污水和农田径流直接进入大沽河引发河流水质超标。依据生态连通性原理，规划了21条生态廊道，形成了村庄的生态网，增强了村域的生态韧性。对村庄生活污水进行集中处理和深度净化，在大沽河沿岸规划了宽度为100 m的缓冲带，减少农田径流污染，保障了河流水质。

Abstract: The quality of rural water ecological environment affects the water quality of the river nearby, which is the key problem to be solved to ensure the water quality of the river. ArcGIS spatial anal-ysis function, hydrological analysis module and minimum cost distance model were used to analyze the current situation of water ecological environment quality in the Qiantou Village. The results showed that the number of ecological source patches were small, ecological corridors were insufficient, ecological network could not be formed, and ecological resilience was poor. Domestic sewage and farm runoff directly enter the Dagu River, causing water quality to exceed standards. According to the principle of ecological connectivity, 21 ecological corridors are planned to form the ecological network of the village and enhance the ecological resilience of the village. Centralized treatment and deep purification of village domestic sewage have been carried out, and a buffer zone of 100 m width has been planned along the Dagu River to reduce runoff pollution from farmland and ensure the water quality of the river.