| 青海乐都地区森林涵养水源效能研究 |
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| 引用本文： | 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[J].植物生态学报,1991,15(1):71-78. |
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| 作者姓名： | 何东宁 王占林 张洪勋 |
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| 作者单位： | 青海省农林科学院林业研究所，青海省农林科学院林业研究所，青海省乐都县林业局 西宁 810016 |
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| 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。
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| 关 键 词： | 水源涵养林 枯落物 土壤渗透 地下径流 |
STUDIES ON THE WATER CONSERVATION EFFICACY OF FOREST IN THE LAND AREA QINGHAI PROVINCE |
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| He Dong-ning Wang Zhan-lin.STUDIES ON THE WATER CONSERVATION EFFICACY OF FOREST IN THE LAND AREA QINGHAI PROVINCE[J].Acta Phytoecologica Sinica,1991,15(1):71-78. |
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| Authors: | He Dong-ning Wang Zhan-lin |
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| Abstract: | There are six main forest community types in the forest district ofthe north mountain of Ledu county, The test and analysis of the physicalpreperties of forest soil, forest litter, water absorption capacity, the inf-iltration velocity of soil and underground run-off as well as the estimateof the efficacy of water conservation point out that forest community so-it of this area contain good efficacy of water conservation. It shows th-at volume-weight is reduced and porocity is increased. The forest comm-unity soil of this area can conserve water about 461-978t/ha. The abso-rbing 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 inte-nsity of this area. |
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| Keywords: | Protection forest for water conservation Litter Infiltration velocity Underground run-off |
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