干旱地区农业研究2017，Vol.35Issue(4)：276-282,7.DOI:10.7606/j.issn.1000-7601.2017.04.42
基于温度植被干旱指数的黑龙江省旱情动态研究
Investigation on dynamic changes of drought in Heilongjiang Province based on temperature vegetation drought index
摘要
Abstract
To carry out dynamic monitoring of the drought in Heilongjiang Province in 2015,MODIS data from June to September were used to calculate temperature vegetation drought index (TVDI).Baesd on the agricultural drought grade division standard of soil relative humidity and TVDI data of ten days as a unit over the past 15 years from 40 dry farming site,TVDI drought monitoring level was set.The agricultural drought grade division standard were verified by the soil relative humidity data of field survey in 2011,and the accuracy of the verified results reached 83％.The results showed there were five levels of TVDI value:no drought (TVDI ＜ 0.46),light drought (0.46 ＜ TVDI ＜ 0.57),medium drought(0.57 ＜ TVDI ＜ 0.76),severe drought(0.76 ＜ TVDI ＜ 0.86),critical drought (0.86 ＜ TVDI).The drought in Heilongjiang province in 2015 was analyzed according to the level standard.The most serious drought took place in July,and it lasted until mid August.Thereafter,areas suffered from heavy drought diminished and the overall drought was relieved because of succession of rain throughout the province.关键词
温度植被干旱指数/MODIS/干旱等级划分/黑龙江省Key words
temperature vegetation drought index/MODIS/classification of drought grades/Heilongjiang Province分类
农业科技引用本文复制引用
吴黎..基于温度植被干旱指数的黑龙江省旱情动态研究[J].干旱地区农业研究,2017,35(4):276-282,7.基金项目
哈尔滨市科学技术局青年后备人才项目(2014RFQYJ108) （2014RFQYJ108）
国防科工局重大专项科研项目子项目(E0201/1112-2) （E0201/1112-2）
