基于MODIS数据温度植被干旱指数干旱监测指标的等级划分

发布时间：2018-02-11 17:22

本文关键词： 温度植被干旱指数 MODIS 干旱等级划分黑龙江省　出处：《水土保持研究》2017年03期 　论文类型：期刊论文

【摘要】：采用2000—2014年每年6—9月的黑龙江省MODIS数据,计算温度植被干旱指数(TVDI)。以过去15a的全省40个旱作农业站点以旬为单位的土壤相对湿度为研究对象,与MODIS数据得到的TVDI相对应,根据土壤相对湿度的农业干旱等级划分标准,制定TVDI的干旱监测等级。结果显示:TVDI被分为5个等级,TVDI0.46为无旱,TVDI在0.46~0.57为轻旱,TVDI在0.57~0.76为中旱,TVDI在0.76~0.86为重旱,TVDI≥0.86为特旱。利用2011年实地测取土壤相对湿度数据对该等级进行验证,结果表明,验证结果准确度达到83%。证实了该等级划分结果的准确性。
[Abstract]:The 2000 year - 2014 6 - September in Heilongjiang province MODIS data, calculate the Temperature Vegetation Drought Index (TVDI). In the past, 15A province's 40 dry farming site in late for the unit of soil relative humidity as the research object, and MODIS data corresponding to the TVDI, according to the classification of agricultural drought standard relative humidity of soil make the grade TVDI, drought monitoring. The results showed that TVDI was divided into 5 grades, TVDI0.46 TVDI in 0.46~0.57 for drought, light drought, TVDI in 0.57~0.76 TVDI in 0.76~0.86 in drought, severe drought, TVDI = 0.86 for special drought. The field measured soil moisture data to verify the the level of 2011. The results show that the accuracy of 83%. results confirmed the accuracy of the classification results.

【作者单位】：黑龙江省农业科学院遥感技术中心;
【基金】：哈尔滨市科学技术局青年后备人才项目(2014RFQYJ108) 国防科工局重大专项科研项目子项目(E0201/1112-2)
【分类号】：S423

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