1960—2010年安康市暴雨变化特征分析  

Change Characteristics of Rainstorm in Ankang During 1960-2010

作　　者：韩勇 李小芳[2] HAN Yong;LI Xiaofang(College of Tourism and Environment Resources,Ankang University,Ankang Shaanxi 725000;Ankang Meteorological Bureau,Ankang Shaanxi 725000)

机构地区：[1]安康学院旅游与资源环境学院,陕西安康725000 [2]安康市气象局,陕西安康725000

出　　处：《现代农业科技》2020年第22期150-153,共4页Modern Agricultural Science and Technology

基　　金：陕南陡坡耕地水土及养分流失特征研究(2017A YQDZR07)。

摘　　要：气候变化导致全球暴雨事件增加,随之引起诸多次生灾害。安康市作为南水北调中线工程的重要水源区,暴雨变化对该区域水环境安全具有重要影响。利用安康市10个气象站点1960—2010年间的日降雨量资料,采用R/S分析研究全市以及各县区暴雨变化特征。结果表明,研究期内,旬阳、白河二县年暴雨量呈不显著减少趋势,其余各县区均呈不显著增加趋势;除旬阳县和白河县外,其余各县的年暴雨量与年降雨量的比值51年中呈缓慢增大趋势;由于未来宁陕、汉阴二县的暴雨日数减少,其次暴雨量会增大,导致暴雨级别升高,而白河县则刚好相反。该研究可为安康市次生灾害防控政策调整和保障南水北调中线水环境安全提供理论支持。Climate change has led to the increase of rainstorm events and many secondary disasters all over the world. As the water source area of the Middle Route of South to North Water Transfer Project, changes of rainstorm in Ankang City has an important impact on the regional water environment security. Based on the daily rainfall data of 10 meteorological stations in Ankang from 1960 to 2010, the paper analyzed the change characteristics of rainstorm in whole city by using R/S analysis. The results showed that rainstorm amount in Xunyang and Baihe presented non-significant decrease trend, but other eight counties appeared non-significant increase trend. Except Xunyang and Baihe, the ratio of annual rainstorm amount and annual rainfall amount in other eight counties increased slowly during the past 51 years. For rainstorm days of Xunyang and Hanyin will decrease in the future, but single event rainstorm amount will increase, the rainstorm level will increase, but that of Baihe is opposite. The research can provide theoretical support for the adjustment of secondary disaster prevention and control policies in Ankang City and the water environment safety of the middle route of South to North Water Transfer Project.

关 键 词：暴雨量 暴雨日数 Hurst系数 陕西安康 1960—2010年 

分 类 号：P426.623[天文地球—大气科学及气象学]