水土保持研究2017，Vol.24Issue(3)：130-135,6.
基于MODIS数据温度植被干旱指数干旱监测指标的等级划分
Classification of Drought Grades Based on Temperature Vegetation Drought Index Using the MODIS Data
摘要
Abstract
MODIS data from June to September were used to calculate temperature vegetation drought index (TVDI).We selected TVDI data of 40 dry farming sites as the research objects which is in ten days as a unit of TVDI over the past 15 years.According to the agricultural drought grade division standard of soil relative humidity,TVDI drought monitoring level was set.The results show that the TVDI can be divided into 5 levels.TVDI＜0.46 for no drought,TVDI between 0.46 to 0.57 for the light drought,TVDI between 0.57～ 0.76 for the middle drought,0.76～0.86 in the TVDI for the heavy drought,TVDI≥0.86 for the special drought.Meanwhile,the agricultural drought grade division standard was verified by the soil relative humidity data of field survey in 2011.Results showed that the accuracy of the verified results reached to 83％,which demonstrates that the classification of TVDI is suitable and practical.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/drought/classification of grades/Heilongjiang Province分类
农业科技引用本文复制引用
吴黎..基于MODIS数据温度植被干旱指数干旱监测指标的等级划分[J].水土保持研究,2017,24(3):130-135,6.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）
