摘要
了解巴尔喀什湖流域降水变化特征是开发利用流域水资源、探究流域生态环境改变原因的前提,基于巴尔喀什湖流域5个气象站1936～2005年的逐月降水资料,采用分摊熵、趋势系数和Mann-Kendall非参数统计检验法对降水量特征、变化趋势进行分析。结果表明,流域年均降水量在100～700mm之间,70%的降水集中于4～7、10～12月;流域的年、月降水量呈上升趋势,1～2、11～12月显著;流域降水年内分配整体上无显著变化。
The study of variation characteristics of precipitation in Balkhash Lake Basin is the prerequisite for development and utilization of basin water resources and exploration of the cause of ecological environment change.Based on the monthly precipitation data during1936~2005 of five meteorological stations,sharing entropy,trend coefficient and Mann-Kendall test method are used to analyze the variation characteristics of precipitation and its distribution.The results show that the average annual precipitation ranges from 100mm to 700mm,and 70% of the precipitation is mainly concentrated in April^July and October^December;the annual and monthly precipitation appears upward trend,and the trend of January^February and November^December is obvious;the annual distribution of precipitation basically does not change significantly.
出处
《水电能源科学》
北大核心
2013年第6期10-13,共4页
Water Resources and Power
基金
水利部公益性行业科研专项基金资助项目(201001052)
2011年度国家社科基金资助重大项目(11&ZD168)
江苏省2011年度普通高校研究生科研创新计划基金资助项目(CXZZ11_0433)
