...规划时，理论上应适时适地选择不同之标准，而供水规划准则一般 使用缺水指数，缺水指数定义如下: SI : 缺水指数(shortage index) N : 模拟总年数 缺水指数简单描述年缺水量与年计画供水量间之关系，以缺水率(年缺水 量/年计画供水量)之平方表现年缺水之程度，...
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该文主要研究利用遥感技术资料，基于GIS技术，通过作物缺水指数模型监测旱情的方法。
A method to monitor drought using crop water stress index which is based on GIS technology combined with remote sensing data, graph and meteorological data was presented.
在充分考虑草地土壤水分亏缺和生产力水平的基础上，构造了草地缺水指数和旱灾评判系数。
Based on the consideration of grassland water shortage and productivity, water shortage index and drought judgment index were presented.
以改进的热惯量法、作物缺水指数法和植被指数法等为主要代表的土壤水分遥感监测方法日臻成熟。
The results showed that the methods on soil moisture monitoring by remote sensing, which are mainly stood for by improved thermal inertia, CWSI and vegetation index, are becoming mature.
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