| 贵州温度植被干旱的指数（TVDI）特征及其遥感干旱的监测应用 |
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| 引用本文： | 康为民,罗宇翔,郑小波,陈娟.贵州温度植被干旱的指数（TVDI）特征及其遥感干旱的监测应用[J].贵州农业科学,2008,36(4). |
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| 作者姓名： | 康为民 罗宇翔 郑小波 陈娟 |
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| 作者单位： | 1. 贵州省山地环境气候研究所,贵州,贵阳,550002
2. 贵州省气候中心,贵州,贵阳,550002 |
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| 基金项目： | 贵州省科学技术基金，贵州省气象局开放基金 |
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| 摘 要： | 基于遥感技术的温度植被干旱指数(TVDI)综合了遥感陆面温度或遥感植被指数两类土壤水分检测方法的长处,有效地减小了植被覆盖度的影响,提高了遥感干旱监测的准确性.应用TVDI法和贵州2006年7月和8月,2007年8月的EOS/MODIS遥感资料,分析并揭示了山区复杂独特的NDVI-Ts空间结构特征,反演了贵州表层土壤干旱情况,并与同期当地气象站土壤湿度观测数据进行定量验证,证明TVDI与土壤湿度显著相关.该方法适宜于较大区域、复杂地形的干旱检测与预警.
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| 关 键 词： | 干旱监测 温度植被指数 NDVI-Ts特征空间 |
The Characteristic of Temperature/Vegetation Drought Index(TVDI) and Its Application in Remote Sensing Drought Monitoring in Guizhou |
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| KANG Wei-min,LUO Yu-xiang,ZHENG Xiao-bo,CHEN Juan.The Characteristic of Temperature/Vegetation Drought Index(TVDI) and Its Application in Remote Sensing Drought Monitoring in Guizhou[J].Guizhou Agricultural Sciences,2008,36(4). |
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| Authors: | KANG Wei-min LUO Yu-xiang ZHENG Xiao-bo CHEN Juan |
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| Abstract: | The temperature/vegetation drought index based on the remote sensing technology can raise the precision of remote sensing drought monitoring by effectively reducing the impact of vegetation cover degree.The TVDI method and remote sensing data monitored by(EOS) MODIS in July and August,2006 and August,2007 were used to analyze and reveal the unique and complex NDVI-Ts space structure in Guizhou.The surface soil drought condition was inversed and verified with the soil moisture data from local weather stations simultaneously.The results showed that there was a significant coorelation between TVDI and soil moisture,which expresses the TVDI method can be used in drought monitoring and early warning of the areas with complex terrain. |
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| Keywords: | MODIS |
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