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A COMPARISON OF HYDROLOGICAL BEHAVIORS OF FOREST AND GRASSLAND WATERSHEDS IN GULLY REGION OF THE LOESS PLATEAU
Authors
康绍忠
李玉山
黄明斌
Publication date
1 January 1999
Publisher
Abstract
分析了黄土高原沟壑区森林小流域和自然草地小流域的水文效应,并利用实测资料和模型计算结果比较了两流域的水循环特点,结果发现在郁闭度相同的情况下,森林小流域较自然草地小流域有较小的径流量、较大的蒸散量和较低的3m土层平均含水量,也就是说森林的覆盖增强了水分小循环,削弱了水文大循环,并导致土壤含水量降低。同时也发现森林的上述水文效应仅当其郁闭度达到一定程度时才能表现出来。通过比较两类生态系统植物生长的土壤水分环境条件和水分利用率,认为黄土高原沟壑区在大力发展林业时应以沟谷为
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018