漓江流域水资源形势分析

漓江全长 2 14 km ,流域面积 5 5 85 km2 ,漓江流域降水资源丰富 ,水资源总量为 6 6 .2 3× 10 8m3,水资源具有山地河流的特点 ,水资源可利用量为 2 6 .4 9× 10 8m3,现状供水总量为 15 .4 4× 10 8m3,现状用水总量为 13.6 0×10 8m3,供用水基本达到平衡。但流域水资源时空分布极不均衡 ,枯水季节干旱严重 ,汛期洪灾频繁。城镇污废水处理能力有限或排水管网不配套 ,局部河段尤其漓江支流水质状况不良。水短缺和水污染问题随着社会经济发展而日益突出。解决问题的途径主要是依靠漓江流域增加水资源调蓄能力与节水 ,增强污水处理能力 ,逐步实现污水资源化 ,实现生态节水型的目标。

Analysis on Water Resources of Lijiang River Basin

Lijiang River is 214 km in length, and 5585 km² in drainage area Water resources of Lijiang river basin totals 66.23×10⁸m³,which is characteristic of mountain stream Its available amount, actual water supply,and actual utilization are 26.49×10⁸,15.44×10⁸,and 13.60×10⁸m³,respectively.The water resources utilization and supply are basically equilibrium.But water shortage often appears in dry season, and flood in rainfall season.In addition,water quality is affected in some parts of river, especially in its branches.The limited sewage disposal and uncoordinated drainage net are problem.The water shortage and water pollution would become serious with the development of socioeconomics.Increasing reservoir flood routing capability and saving water are approaches to solve the water problem. Meanwhile the capability of sewage disposal must be enhanced to have wastewater reused.