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经 5年定位研究 ,发现毛竹林水保能力较强 ,其月均地表径流量 0 .0 982m3 ,是杉木林的 77% ,马尾松林的 35% ;输沙量0 .1 831kg,是杉木的 42 .8% ,马尾松的 2 3 .6% ;影响地表径流量的主要因子是降雨量和降雨强度。毛竹林平均林冠截留率为32 .58% ,树干茎流率为 5.91 % ;杉木林平均林冠截留率为 40 .7% ,树干茎流率为 1 .1 % ;马尾松林平均林冠截留率为 2 1 .9% ,树干茎流率为 2 .2 % ;影响截留量、茎流量的主要因子是降雨量
After 5-year positioning research, we found that the bamboo forest has a strong capability of water conservation. The monthly average surface runoff is 0.0982m3, which is 77% of the Chinese fir forest and 35% of the Masson pine forest. The sediment discharge is 0.1831kg, 42.8%, and 23.6% of masson pine. The main factors influencing surface runoff are rainfall and rainfall intensity. The average corolla canopy retention rate was 32.58%, and the stem flow rate was 5.91%. The average corolla canopy retention rate was 40.7% and the stem flow rate was 1. 1%. The average canopy retention rate of Pinus massoniana forest was 2 1 .9%, stem flow rate of 2. 2%; affect the interception, the main factor of stem flow is rainfall