青海乐都地区森林涵养水源效能研究

植物生态学报 ›› 1991, Vol. 15 ›› Issue (1): 71-78.

青海乐都地区森林涵养水源效能研究

何东宁,王占林,张洪勋

发布日期:1991-01-10
通讯作者: 何东宁

Studies on the water Conservation Efficacy of Forest in the Land Area Qinghai Province

He Dong-ning, Wang Zhan-lin, Zhang Hong-xun

Published:1991-01-10
Contact: Xu Meng

摘要/Abstract

摘要： 乐都县北山林区有六种主要森林群落类型，通过对其土壤物理性质、枯落物、枯落物水容量、土壤渗透和地下径流的测定分析以及涵养水源效能之估价，指出：该区森林群落土壤具有良好的涵养水源功能，表现为：土壤容重降低，孔隙度的增加，一公顷森林土壤能蓄水641—978t，枯落物的吸水量是它自身重的2.9—7.6倍；土壤的渗透速度远大于本区最大降水强度。

Abstract: There are six main forest community types in the forest district of the north mountain of Ledu county. The test and analysis of the physical preperties of forest soil, forest litter, water absorption capacity, the infiltration velocity of soil and underground run-off as well as the estimate of the efficacy of water conservation point out that forest community soil of this area contain good efficacy of water conservation. It shows that volume-weight is reduced and porocity is increased. The forest community soil of this area can conserve water about 461—978t/ha. The absorbing water capacity of forest litter is 2.9—7.6 more than its weight. The infiltration velocity of soil is far more than maximum rainfall intensity of this area.

何东宁, 王占林, 张洪勋. 青海乐都地区森林涵养水源效能研究. 植物生态学报, 1991, 15(1): 71-78

He Dong-ning, Wang Zhan-lin, Zhang Hong-xun. Studies on the water Conservation Efficacy of Forest in the Land Area Qinghai Province. Chinese Journal of Plant Ecology, 1991, 15(1): 71-78

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