格式栲天然林水源涵养功能的研究

本文通过对三明莘口格式栲天然林与人工林的林冠层,林木植被层和林褥层及林下土壤层的持水量,土壤渗透性能差异等的研究。结果表明:格式栲天然林林分持水总量比格式持和楠木人工林分别增加 225.131t/ha 和 296.558t/ha;土壤稳渗值高达 8.09 mm/min,分别是格式栲和楠木人工林的3.3倍和25.3倍。格式栲天然林具有良好的水源涵养功能。

A STUDY ON THE WATER CONSERVATION FUNCTION OF THE NATURAL FOREST OF GE'S EVERGREEN CHINQUAPIN

Studies of the forest canopy, the vegetation stratum under canopy, the forest floor and the differences in water-holding capacity of soil horizon (0-40cm) and in soil permeability are made for the Ge's evergreen-chinquapin natural stands and plantations in Sanming, Xinke. The results show that the total water-holding capacitf of the Ge's evergreen chinquapin natural stands has increased by 225.131 t/ha as compared with its plantations and by 296.558 t/ha as compared with the Nanmu plantations, and that the steady infiltration value of the soil amounts to 8.09 mm/min, which is 3.3 times as much as that of the Ge's evergreen chinquapin plantations and 25.3 times as much as that of the Nanmu plantations. It is obvious that the Ge's evergreen-chinquapin natural stands have a splendid water conservation function.