北京山地不同海拔侧柏人工林枯落物水文效应研究  

Hydrological Effects of Litters of Platycladus orientalis Plantation With Different Altitudes on Mountains of Beijing

作　　者：李艳丽 

机构地区：[1]河北省林业调查规划设计院,河北石家庄050051

出　　处：《防护林科技》2013年第5期9-11,共3页Protection Forest Science and Technology

基　　金：北京科技专项(Z111105055311043)

摘　　要：通过对北京山地4个不同海拔侧柏人工林枯落物层水文效应进行研究,结果表明:北京山地侧柏人工林枯落物总储量在11.35～25.06t.hm-2之间,最大持水量在13.39～53.55t·hm-2之间,有效拦蓄能力在11.39～39.63t·hm-2之间,最大持水率在123.32%～217.85%之间,枯落物持水量与浸泡时间呈明显对数关系,枯落物吸水速率与浸泡时间呈明显幂函数关系。综合来看,海拔为758.55m的侧柏人工林枯落物涵养水源能力最好。Hydrological effects of litter layers of Platycladus orientalis with four different altitudes of artificial forest stands on mountain of Beijing were studied. Result shows that：the litter total storage capacity is about 11.35-25.06 t · hm-2 ;the maximum water holding capacity of Platycladus of ientalis plantaiton of mountains of Beijing is about 13.39-53.55 t · hm-2 ;the modified interception capacity is about 11.39-39.63 t· hm-2 ;the maximum water holding rate is about 123.32%-217.85%. Water holding capacity; soaking time have significant logarithmic relation- ship,absorption rate ＆ immersion time appear logarithmic power function. In general,litter of Platycladus orientalis plantation whose elevation being 758.55 m have the optimal water conservation capacity.

关 键 词：侧柏 海拔 枯落物 水文效应 北京山地 

分 类 号：S715[农业科学—林学]