白龙江高山林线木本植物组成与地被物和土壤持水特性  

Woody plants composition and water-holding characteristics of ground cover and soil in the alpine timberline of Bailong River

作　　者：黄旭东 杨永红 曹秀文 刘锦乾 王飞 HUANG Xudong;YANG Yonghong;CAO Xiuwen;LIU Jinqian;WANG Fei(Institute of forestry Science,Bailongjiang Forestry Management Bureau of Gansu Province,Lanzhou 730070,China;Gansu Bailongjiang National Forest Ecosystem Research Station,Zhouqu 746300,China)

机构地区：[1]甘肃省白龙江林业科学研究所,甘肃兰州730070 [2]甘肃白龙江森林生态系统国家定位观测研究站,甘肃舟曲746300

出　　处：《贵州林业科技》2023年第2期60-64,共5页Guizhou Forestry Science and Technology

基　　金：甘肃省林业科技项目(2015kj048);甘肃省林业科技项目(2015kj051);甘肃省林业科技项目(2016kj058)。

摘　　要：高山林线是植被生态脆弱区,也是植被过度敏感区,对高山林线的研究一直是众多学者研究的焦点之一,因研究的地域、海拔、环境、气候、对象等的不同,导致不同高山林线区域物种组成,水源涵养功能等差距较大。本研究以甘肃省白龙江高山林线为研究对象,通过对该区域木本植物组成与地被物和土壤持水特性分析,结果显示:高山林线不同海拔区域物种组成不同,随着海拔的升高,物种组成呈增加的趋势;高山林线不同区域土壤和地被物持水特性不同。Alpine timberline is one of the most ecological fragile and overly sensitive areas in the vegetation coverages.However,most previous research of alpine timberline can vary greatly in the region,altitude,environment,and climate.Taking the Bailong River in Gansu alpine timberline as the research object,this study aims to explore the regional woody plants composition and water-holding characteristics of ground cover and soil moisture.The results show that the species composition was different at the various elevations of the alpine timberline.Specifically,the species composition was enhanced significantly with the increase in the elevation.Soil and ground cover also shared the different water-holding characteristics in the different regions of the alpine timberline.

关 键 词：高山林线 木本植物 地被物 土壤 持水特性 

分 类 号：S714[农业科学—林学]