祁连山水源涵养林组成结构及生长状况  

Analysis of Productivity and Composition Structure of Water Resources Conservation Forest in Qilian Mountains

作　　者：王金叶[1] 张学龙[1] 张虎[1] 王艺林[1] 金铭[1] 

机构地区：[1]甘肃省张掖祁连山水源林研究所,甘肃张掖734000

出　　处：《西北林学院学报》2001年第z1期4-7,共4页Journal of Northwest Forestry University

基　　金：国家林业局"中国森林生态系统研究网络"资助 ( 96 -30 )

摘　　要：祁连山水源涵养林受立地水热条件影响和自然、历史干扰 ,多世代演替林型共存 ,分布占祁连山三个垂直气候带 ,主要由干性灌丛林、青海云杉林、祁连圆柏林、湿性灌丛林四种类型 ,组成简单、结构单一 ,呈现高寒半干旱、半湿润气候特点 ;青海云杉林是祁连山水源涵养林的主体 ,相对其它森林类型其组成、层次结构复杂 ,生产力较高 ;干性灌丛林分布在立地条件较差的浅山地带 ,是祁连山水源涵养林的先锋林型 ;湿性灌丛林分布在山地森林草原带以上 ,是地带性顶极群落。Various types of succession age of water resources conservation forests in Qilian Mountains coexist,which is the results of natural and long historical successions. The distribution covers three vertical climate belts,and it's made up of dry-shrub forest,and the simple composition and structure show alpine frigid semi-arid climate characteristics. Picea crassifolia forest is the dominant type of water resources conservation forest in Qilian Mountains; comparatively it has more complicated composition and stratum structure and higher productivity. Dry-shrub forest is pioneer type,which distributes on low mountains with poor site conditions. Marsh-shrub forest is regional type of climax community,which distributes on the mountain forest grassland upper limit and has a large effect on water resources regulation.

关 键 词：水源涵养林 组成结构 生长状况 

分 类 号：S758.5[农业科学—森林经理学]