摘要
以海河水系唐河上游流域为研究对象,根据1960年-2002年流域的降水及实测径流资料,利用肯德尔秩次相关法和双累积曲线,分析了年降水、年径流和降水-径流关系的变化趋势。结果表明,降水量不存在明显变化趋势,而径流量存在明显的下降趋势。整个降水-径流系列可以划分为三个阶段:1960年-1978年,1979年-1995年,1996年-2002年,三个阶段的降水-径流相关系数依次减少,降水-径流相关性减弱。此外,从流域内土地利用类型变化、水利工程建设、地下水资源开发利用状况等几个方面对流域降水-径流变化原因进行了初步分析与评价。
Kendall method and double mass curve are applied to analyze the variation trend of annual rainfall, runoff and rainfall-runoff relation- ship in the upper Tang watershed in the Haihe River Basin from 1960 to 2002. The result showed that the annual rainfall series had not a visible downtrend but the annual runoff series had an obvious downtrend. The whole rainfall-runoff series could be divided into three periods： 1960-1978, 1979-1995, 1996-2002. The correlation between rainfall and runoff kept weakening, as its correlation coefficients decreased from period I to Ⅲ Besides, the paper primarily analyzed and evaluated the impacts of land use change, water conservancy projects construction and ground-water utilization on the rainfall-runoff change.
出处
《南水北调与水利科技》
CAS
CSCD
2009年第5期73-75,共3页
South-to-North Water Transfers and Water Science & Technology
基金
国家自然科学基金面上项目资助(40371025)
关键词
唐河上游
降水─径流变化
土地利用变化
人类活动
upper Tang watershed
rainfall-runoff change
land use change
human activities
