泾河上游三关口水文站径流量丰枯变化分析

An Analysis of Runoff Change at Sanguankou Hydrologic Station in Upper Reaches of Jinghe River

依据三关口水文站实测资料,对其径流量进行了统计分析,结果表明:20世纪60年代径流较丰,70、80年代较为接近,90年代减少趋势显著,2001—2010年继续减小且显著。

A statistical analysis of the runoff is made on the basis of measured data at Sangnankou hydrologic station. The result shows that the runoff is relatively abundant during 60s of twentieth century, the runoff during 70s and 80s of twentieth century are similar and the runoff during 90s has the trend of decreasing and it continues to decrease significantly during the year 2001 to 2010.