摘要
为了定量评价马尾松林的综合水文功能,对鄂西山地区内的马尾松林林冠截留、枯落物截留和林地土壤蓄流等关键水文效应进行了观测研究。结果表明:林冠截留率为19.14%,树干茎流率为0.48%;林冠截留量与降雨量呈幂函数关系,林内透雨、树干茎流分别与降雨量呈线性关系;枯落物最大持水率为224.23%,土壤贮水力为291.63t/hm2。研究区内马尾松林的水文功能尚需通过有效途径加以提升。
In order to evaluate quantitatively hydrological effects,based on analyzing of the three key forestry hydrological functions,such as canopy interception,litter interception and forest soil water storage capacity,the hydrological effect of P.massoniana Lamb.in mountain of western Hubei has been studied systematically.The results showed that the canopy interception is 19.14% of the total rainfall,and 0.48% of rainfall transformed into stem flow.The canopy interception was exponential functional relation to its rainfall and through fall and stem flow are significant linear correlation.The maximum water-holding percentage of litter layer is 224.23%.The soil water holding capacity is 291.63 t/hm^2.the hydrological function of P.massoniana Lamb.forest need to improve in study area.
出处
《湖北林业科技》
2011年第4期7-10,共4页
Hubei Forestry Science and Technology
基金
国家林业局"长江三峡库区(秭归)森林生态定位站"项目
关键词
森林水文效应
林冠截留
枯落物蓄水
土壤贮水力
hydrological effect of forest
canopy interception
water storage of litter layer
soil water storage capacity
