摘要
依据干旱监测的原理,从土壤水分、植被指数、表面温度、要素综合等角度出发,对现有主要农业干旱遥感监测模型进行归纳总结,分析了各种方法的优缺点,以及各自的适用范围;重点分析了条件植被温度指数、温度-植被干旱指数,指出它们应看作是对归一化温度指数的简化处理,兼具实用性和一定的监测精度,在业务应用中有一定的推广价值,并预测了未来遥感干旱监测的发展方向和目标。
Based on the principle of drought monitoring, the existing agricultural drought monitoring models based on remote sensing were summarized beginning from soil moisture, vegetation index, land surface temperature and so on. The advantages and disadvantages of all kinds of models and the applicable range of them were analyzed. The vegetation temperature condition index （VTCI） and the temperature vegetation dryness index （TVDI） were analyzed emphatically, and point out that they should be the simplification of normalized difference temperature index （NDTI）. Compared with other methods, they were practicable and their precisions could meet the requirement of daily routine. The development direction and goal of drought monitoring based on remote sensing were forecasted.
出处
《安徽农业科学》
CAS
北大核心
2008年第8期3460-3462,共3页
Journal of Anhui Agricultural Sciences
关键词
干旱监测
遥感
土壤湿度
植被指数
地表温度
Drought monitoring
Remote sensing
Soil moisture
Vegetation index
Land surface temperature
