我们在1970—1972年对雪松大片林冠和草层作了研究。在7号和8号试验地安装了20个标准雨量筒。在每个雨量筒附近的草层下,配置了3个铝制的称瓶。雨量筒是用来测林冠截留降水的,称瓶是用来测草层截留降水的。1973—1977年在林冠和草层下测量降水都是用标准雨量器,草层下安装在高地10cm高处。 We studied large canopy and grass layers of cedar from 1970 to 1972. Twenty standard rain gauges were installed on the 7th and 8th pilots. Underneath each canopy, three aluminum bottles were placed. Rainfall measuring cylinder is used to measure the canopy retention of precipitation, said the bottle is used to measure the grass layer to retain precipitation. 1973-1977 Rainfall measured under canopy and grass canopy was measured using a standard rain gauge mounted beneath the grass at a height of 10 cm.