昆明市松华坝水源地水源涵养能力时空变化研究  

The Spatial and Temporal Variation of Water Retention Capacity in Songhuaba Water Source Area in Kunming

作　　者：段琪彩 方绍东[2] 王杰 黄英 

机构地区：[1]云南省水利水电科学研究院,昆明650228 [2]云南省水文水资源局,昆明650196

出　　处：《中国农村水利水电》2012年第10期170-173,共4页China Rural Water and Hydropower

基　　金：水利部公益性行业专项经费项目(201001058;201101042)

摘　　要：水源涵养能力是水源地脆弱性诊断的重要指标之一。在对比直线分割、直线斜割和滤波3种基流分割方法的基础上,选取松华坝水源地径流区内4个水文站实测流量资料,用滤波法分割基流,并计算基流量和基流指数。结果显示,左支流冷水河上、下游平均基流指数分别为0.589、0.485,右支流牧羊河上、下游平均基流指数分别为0.528、0.484。此外,1954-1992年冷水河下游地区基流量呈显著减小的趋势,其余区域基流量减小的趋势不显著。水源涵养能力空间上表现为,冷水河流域的水源涵养能力较牧羊河流域强,两流域上游的水源涵养能力均较下游强。Water retention capacity is one of the important indexes for diagnosing the vulnerability of water source area.Baseflow amount and baseflow factors are computed in four hydrology gauages and the digital fileter method is used in contrast to linear division and linear inclined cut method.The results show that the baseflow factors are 0.589 and 0.485 in upper and lower reach of the Lengshui River.But in the Muyang River,its baseflow factors are 0.528 and 0.484.The baseflow shows obvious declining trend from 1954 to 1992 in the lower reach of the Lengshui River,but has no obvious declining trend in other regions.Water retention capacigty in the Lengshui River is better than the Muyang River.Moreover,the upper reach is better than the lower reach in both river.

关 键 词：水源涵养能力 时空变化 基流 松华坝水源地 

分 类 号：TU991.11[建筑科学—市政工程]