淮河上游地区干旱评价分析  

Drought Evaluation for Upper Reaches of the Huaihe River

作　　者：张炜 刘轶 李琼芳 任立良 蔡涛 

机构地区：[1]水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]内蒙古自治区水文总局,内蒙古呼和浩特010020

出　　处：《水文》2009年第5期69-72,共4页Journal of China Hydrology

基　　金：水利部公益性项目专项经费项目(200701031);教育部"长江学者和创新团队发展计划"资助项目(IRT0717);高等学校学科创新引智计划项目(B08048);教育部留学回国人员科研启动基金资助项目(B06041)

摘　　要：利用淮河上游6个雨量站1964-2000年日降雨资料和邻近气象站气象资料，分别计算各站逐月Palmer干旱指标和雨量距平指标，并对计算结果进行对比分析。结果表明：淮河上游地区旱涝程度具有较强的持续性，夏季干旱多发，不过干旱等级多集中在轻微干旱和中等干旱；秋冬季节则是严重干旱多发的季节；极端干旱多发于春季；相比降雨量较大的淮南地区，淮北地区更为干旱。Based on the data of daily precipitation from 1964 to 2000 at six stations in the upper reaches of the Huaihe River and the meteorological data at the neighboring weather stations, the Palmer drought severity index and rainfall anomaly index were calculated, and the results were compared and analyzed. The results show that the durative of droughts and floods grades are rather marked, the occurring frequency of moderate and mild drought is highest in the summer, the occurring frequency of drought is higher in the autumn and winter, and the extreme drought mainly occur in the spring, the north is drier than the south in the upper reaches of the Huaihe river.

关 键 词：淮河上游 干旱评价 PDSI指数 RAI指数 

分 类 号：P333.6[天文地球—水文科学]