森林与水的关系在一个多世纪以来一直是气象、水文、林学等方面的学者热烈讨论的问题。森林具有防止土壤侵蚀,调节河流流量,削减洪峰流量等有利的水文作用,这是一般公认的规律。但对森林能否增加林区降雨量、增加总的供水量等问题,却各据不同的资料,持 The relationship between forests and water has been a topic of heated discussion by scholars in the fields of meteorology, hydrology and forestry for more than a century. It is generally acknowledged that forests have the beneficial hydrological effects of preventing soil erosion, regulating river flow and reducing peak flow. However, whether forests can increase the rainfall in the forest areas and increase the total water supply will depend on different sources