摘要
采用滑动平均法、变差系数法、差积曲线-秩检验联合法、Mann-Kendall统计检验等方法,对桑干河流域册田站1956—2005年径流年际变化规律进行分析。结果表明,该流域天然年径流量呈周期性显著减小趋势,年际变幅也显著减小。研究为流域内水资源的规划利用以及防洪安全管理提供有价值的资料。
The interannual variation law of runoff was analyzed for the runoff data from 1956 to 2005 in Cetian hydrometric station using the moving average method,the coefficient of variation method,the combination of residual mass curve and rank test,and Mann-Kendall statistical test.The results showed that the natural annual runoff had the reducing trend periodically and significantly,and the inter-annual variation significantly reduced.This study provided valuable information for water resources planning and utilization and flood safety administration in the Sanggan River Basin.
出处
《水资源保护》
CAS
2011年第3期54-57,共4页
Water Resources Protection
