重庆四面山4种类型天然林枯落物水文效应

摘要

An investigation was conducted to study the litter hydrological effect of four natural forest types in Simian Mountain of Chongqing by field sampling and laboratory testing to discuss the hydrology effect for soil and water conservation forest system construction of Three Gorge Reservoir Region in Yangtze River. The results show that the litter in broad-leaved forest is the best for storing precipitation, and that in broadleaf-conifer mixed forest is the worst. The litter in bamboo forest is also good for storing precipitation because of its low natural moisture content.%为探讨长江三峡库区的森林水文作用,并为三峡库区营建水土保持型森林体系提供依据,通过野外取样和室内试验,对重庆四面山针叶林、阔叶林、针阔混交林和楠竹林4种类型天然林枯落物的水文效应进行了分析.结果表明:阔叶林枯落物对降水的拦蓄效果最佳,针阔混交林枯落物的拦蓄效果最差；楠竹林枯落物由于其自然含水率最低拦蓄效果也较好.