利用气象卫星监测草地雪情方法的研究

The Study on the Remote Sensing Monitoring Method of Grassland Snow Cover.

在总结、分析已有利用气象卫星资料遥感监测草地雪情研究成果的基础上，放弃了以往一直试图建立卫星资料与积雪深度直接关系的思路，从一个新的视角（积雪掩埋地面和牧草程度）出发，提出了适于遥感监测草地黑白灾的白度、雪深指数的表达式，并在实际的雪情监测中进行了应用。与地面实况数据的对比分析表明，该方法是可行的，其监测结果可以客观地反映草地雪情的宏观状况。

On the base of analysis and summarizing the study papers of using meteorological satellite to monitor grassland snow cover. We discard the method of trying to set up direct relationship between snow cover depth and meteorological satellite data, and then from a new view angle (the degree of grass being buried). We put forward the definitions and formule of the indices which can be used to monitor grassland snow cover. These indices are white degree and snow depth index. We have used the two indices in the practical snow cover monitoring and found them to be able to reflect the snow cover conditions.