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祁连山寺大隆林区土壤水分动态研究
引用本文:张学龙,车克钧.祁连山寺大隆林区土壤水分动态研究[J].西北林学院学报,1998,13(1):1-9.
作者姓名:张学龙  车克钧
作者单位:甘肃省祁连山水源林研究所
基金项目:林业部“八五”重点课题
摘    要:通过对祁连山寺大隆林区云杉林、圆柏林、灌丛林、放牧草地等4种主要植被类型土壤水分动态的长期定位研究,揭示出生长季节内各植被类型的土壤水分动态变化规律:土壤水分的年变幅以云杉林为最小,各类型土壤含水量随土层深度增加而递减,均分为3个作用层。土壤0cm~80cm年平均持水量、多年平均持水量以灌丛林最高,分别为228mm、391.92mm,云杉林、圆柏林、放牧草地依次递减。雨季土壤水分的消退以表层最快,向下呈递减趋势,而且因土壤类型不同差异较大;评价土壤水分有效性认为云杉林土壤水分供应状况最好。雨季是本区最佳的造林季节。

关 键 词:祁连山  水源林  土壤  水分动态

Soil Water Dynamics in Sidalong Forest Region of Qilian Mountains
Zhang Xuelong,Che Kejun,Wang Jinye,Yan Wende,Zhang Hu.Soil Water Dynamics in Sidalong Forest Region of Qilian Mountains[J].Journal of Northwest Forestry University,1998,13(1):1-9.
Authors:Zhang Xuelong  Che Kejun  Wang Jinye  Yan Wende  Zhang Hu
Abstract:By long located experiment on soil water dynamics of the four main forest types, i. e., Picea asperata, Sabina chinensis, shrues, grazing land, soil water dynamics was revealed: the soil water dynamics of bryophyta-spruce forest was the least. The water holding capacity of different forest types decreased with the depth of soil. The annual average water holding capacity of shrub was the best (228mm and 391.92mm). The loss of water content in surface soil was the fastest and decreased with depth of soil. It is thounght the soil water content of bryophyta- spruce forest. The best afforestation season is the rainfall period in the region.
Keywords:Qilian Mountains  water conservation forest  soil  soil water dynamics
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