南水北调与水利科技2017，Vol.15Issue(4)：71-78,8.DOI:10.13476/j.cnki.nsbdqk.2017.04.013
干旱指数在四川省的适用性分析
Applicability analysis of drought indexes in Sichuan Province
摘要
Abstract
The selection of drought indexes is very important to the reasonable analysis of drought situation in Sichuan Province.Based on the daily meteorological data from 1960 to 2013 of 39 meteorological stations of Sichuan Province,we calculated the Relative Humidity Index (M),Composite Index of Meteorological Drought (CI),Standardized Precipitation Index (SPI),and Standardized Precipitation-Evapotranspiration Index (SPEI) of each station in 1961,1994,2006,and 2009-2010.We used inverse distance interpolation of Arcgis to conduct spatial interpolation,and compared the situation with the records of typical Sichuan drought disasters in the Encyclopedia of Meteorological Disasters in China.Thus,we evaluated the applicability of the four drought indexes in Sichuan Province.Results showed that:for the summer drought in 1961,the M index and CI index both indicated no drought or slight drought;the results of SPI index were smaller than the actual situation;and SPEI index reported the severely afflicted areas,showing the best effect of the four indexes.For the summer drought in 1994,the monitoring results of M index were small;CI index made false prediction,and reported smaller results in the eastern Sichuan area and western Sichuan Plateau;SPEI index showed smaller results in Bazhong and Daxian;and SPI index showed smaller results in Chengdu and Mianyang.For the midsummer drought in 2006,the results of M index were small;the results of CI index were a little better than M index,but were still smaller than the actual situation;the monitoring results of SPI and SPEI were in accordance with the actual situation.For the winter to spring drought in 2009 and 2010,SPEI showed the best results,M index came second,and SPI index was the worst.In a word,SPEI was the best drought index reflecting the spatial distribution of droughts in Sichuan Province.关键词
四川省/干旱/相对湿润指数M/标准化降水指数SPI/标准化降水蒸散指数SPEI/气象干旱综合指数CIKey words
Sichuan Province/drought/relative humidity index M/composite index of meteorological drought/standardized precipitation index/standardized precipitation-evapotranspiration index分类
农业科技引用本文复制引用
潘妮,卫仁娟,詹存,梁川,徐正东..干旱指数在四川省的适用性分析[J].南水北调与水利科技,2017,15(4):71-78,8.基金项目
国际自然科学基金(41271045) （41271045）
国家重点基础研究发展计划资助项目(2013CB036401) （2013CB036401）
四川水利职业技术学院院级科研项目(KY2017-08 （）
KY2016-20) National Natural Science Foundation of China(41271045)；National key Basic Research Development Plan(2013CB036401)；Research Project of Sichuan Water Conservancy Vocational College(KY2017-08 （41271045）
KY2016-20) （）
