森林实际上仅仅作为景观要素而已,至今仍未深刻地受到技术发展的影响。森林集水区里不断形成相当数量的水资源,同时森林集水区的水质优良,可溶性化学物质的含量比田间集水区低几倍。目前,人们日益重视寻找从森林集水区获得更多径流量的方法。众所周知,人们感兴趣的试验是砍伐或更新与其它植物群落混生的森林对径流的数量及质量的影响,但是对 In fact, the forest only as a landscape element only, has not yet been profoundly affected by the development of technology. Forest catchments continue to form a considerable amount of water resources, while water quality in forest catchments is good, and the content of soluble chemicals is several times lower than in field catchments. At present, there is increasing emphasis on finding ways to obtain more runoff from forest catchments. It is a well-known fact that the test of interest is the effect of deforestation or regeneration on the quantity and quality of runoff in forests mixed with other plant communities. However,