水源林地表温度受植被覆盖度变化的影响，而植被覆盖度变化、干旱引起的地表温度异常又会影响河流水量，研究植被覆盖度对地表温度的影响关系可以监测水源林可能旱情的发生、预测对河流水量的影响- surface temperature and vegetation coverage changes, drought caused by abnormal shadow Ring of river water, the relationship between the vegetation coverage o