青海大通水源涵养林地水分特性研究  

Study on Soil Water Properties of Water Conservation Forests in Datong County of Qinghai Province

作　　者：孙永红 

机构地区：[1]青海省大通县林业局,青海大通810100

出　　处：《青海农林科技》2015年第2期18-23,76,共7页Science and Technology of Qinghai Agriculture and Forestry

摘　　要：为探究青海大通宝库河流域不同水源涵养林地的水分特性。选取青海大通宝库河流域的主要水源涵养林为对象,通过野外调查与室内分析,研究林地的水分特性。表明不同水源涵养林地的水分特性差异极显著,土壤持水性能大小依次为青海云杉白桦混交林>华北落叶松纯林>杂灌丛>青海云杉纯林>青海云杉华北落叶松混交林>白桦纯林>中国沙棘林。土层深度对林地水分特性的影响表现不一。对于青海云杉纯林、青海云杉华北落叶松混交林,土壤饱和含水量、毛管持水量和田间持水量的差异极显著;对杂灌丛而言,土壤饱和含水量、毛管持水量和田间持水量的差异不显著。该研究得出水源涵养能力好的林分,为当地水源涵养林的经营管理提供理论依据。The purpose of this study was to explore the soil water hai Datong baoku fiver basin. We selected the mainwater conservation properties in different woodland in Qing- forest in Qinghai Datong baoku river ba- sin as research object to study the soil water properties of woodland through field investigation and laboratory analysis. Different water conservation forest had significant order of soil water retention was ： Picea crassifolia ＋ Betula differences in soil water properties, The descending platyphylla, Larix principis-rupprechtii, shrub land, Picea crassifolia ,Picea crassifolia ＋ Larix principis-rupprechtii ,Betula platyphylla, Hippophae rhamnoides. The influence of soil depth onwater properties of forest was different. As for Picea crassifolia and Picea crassifolia ＋ Larix principis-rupprechtii, saturated capacity, capillary water capacity and field capacity showed extremely significant difference. For shrub land, no obvious difference was found in saturated capacity, capillary water capacity and field capacity. The reaserch finds better water conservational stands and provides theoretical basis for water conservation forest management.

关 键 词：青海大通 水源涵养林 土壤水分特性 

分 类 号：S727.21[农业科学—林木遗传育种]