南水北调与水利科技2016，Vol.14Issue(6)：50-55,6.DOI:10.13476/j.cnki.nsbdqk.2016.06.009
近40年丹江口库区潜在蒸散量变化特征及影响因素
Variation characteristics and influencing factors of potential evapotranspiration in Danjiangkou reservoir area
摘要
Abstract
Variation characteristics of potential evapotranspiration (ET0 ) has important significance in water cycle research and water resource assessment in the background of global climate change in Danjiangkou reservoir area .ET0 and dry index (DI) measured by Penman‐Monteith model were analyzed based on the measured meteorological data during 1970‐2009 ,which came from the National Meteorological Center public network .The results showed that :(1) Annual precipitation with a mean value of 839 .9 mm decreased with the increment of annual series ,and the annual ,rainy season and dry season precipitation decreased by 14 .3 ,4 .5 and 9 .0 mm/(10a) respectively .(2) Annual ET0 with a mean value of 860 .0 mm increased with the increment of an‐nual series ,and the annual ,rainy season and dry season ET0 increased by 12 .2 ,10 .2 and 2 .9 mm/(10a) respectively .(3) Annu‐al DI with a mean value of 1 .07 increased with the increment of annual series ,and the annual ,rainy season and dry season DI in‐creased by 0 .02 ,0 .17 and 0 .31 mm/(10a) respectively .(4) ET0 and DI had significant negative correlation with relative hu‐mid ,and significant positive correlation with mean wind speed and sunshine hours .The climate in Danjiangkou reservoir area had a drought trend stem from the decrease of precipitation and increase of ET0 in the recent 40 years .关键词
潜在蒸散/干燥度指数/雨季和旱季/距平百分率Key words
potential evapotranspiration/dry index/rainy and dry season/percent of anomaly分类
大气科学引用本文复制引用
王铁军,肖烨,黄志刚,姚伦广,常玮,王晨溪,魏胜南..近40年丹江口库区潜在蒸散量变化特征及影响因素[J].南水北调与水利科技,2016,14(6):50-55,6.基金项目
国家自然科学基金面上项目（31100320）；河南省教育厅高校重点科研项目（15A180052）；河南省战略研究院南阳分院项目（nyzl201525） FundNational Natural Science Foundation of China （31100320）；Key Research Project of Colleges and Universities in Henan Province Edu-cation Department （15A180052）；Project of Institute of Strategic Studies in Henan province （Nanyang Branch） （）
