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黄土高原沟壑区小流域土壤水分空间分布特征
引用本文:何福红,黄明斌,党廷辉.黄土高原沟壑区小流域土壤水分空间分布特征[J].水土保持通报,2002,22(4):6-9.
作者姓名:何福红  黄明斌  党廷辉
作者单位:中国科学院,水土保持研究所,西北农林科技大学,陕西,杨凌,712100
基金项目:国家自然科学基金 (5 0 0 790 2 3 ),国家“十五”科技攻关项目,黄土高原土壤侵蚀与旱地农业国家重点实验室基金资助项目
摘    要:以长武王东沟小流域为研究对象 ,研究了黄土高原沟壑区小流域的土壤水分分布特征。结果表明 :在王东沟小流域内 ,土壤剖面中 0— 2 m的土层经过一个雨季之后 ,土壤水分得到了部分的恢复 ;2 m以下土层 ,由于没有水分补给 ,相对比较干燥。该流域内农地的土壤贮水量高于草地 ,草地高于果园地 ,林地的土壤贮水量最低。而在同一地理位置 ,土壤的水分分布又受坡度、坡向、坡位、植被类型、植被密度和生物量的影响 ,表现出一定的空间变异特性

关 键 词:黄土高原沟壑区  小流域  土壤水分  分布特征
文章编号:1000-288X(2002)04-0006-04
收稿时间:2002/4/19 0:00:00
修稿时间:2002年4月19日

Soil Water Distribution Characteristics in Wangdonggou Watershed in Gully Region of Loess Plateau
HE Fuhong,HUANG Mingbin and DANG Tinghui.Soil Water Distribution Characteristics in Wangdonggou Watershed in Gully Region of Loess Plateau[J].Bulletin of Soil and Water Conservation,2002,22(4):6-9.
Authors:HE Fuhong  HUANG Mingbin and DANG Tinghui
Institution:Institute of Soil and Water Conservation, CAS & MWR, Northwest Sci tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, China;Institute of Soil and Water Conservation, CAS & MWR, Northwest Sci tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, China;Institute of Soil and Water Conservation, CAS & MWR, Northwest Sci tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, China
Abstract:The distribution characteristics of soil water in Wangdonggou watershed in gully region of the loess plateau are studied. The results show that the soil water have renewed in a certain extent after a rainy period in 2 m soil profile. In the soil profile below 2 m, soil water is dry without water supply. In the whole watershed, the average soil water storage of farm land, grass land, orchard land, and forest land are 465.3 mm, 452.8 mm, 450.2 mm, and 424 mm in 2 m soil profile; and 627 mm, 620.6 mm, 598.8 mm, and 542.7 mm in 3 m soil profile. In general, farm land >grass land> orchard land>forest land in soil water content. In the same time, soil water distribution is affected by slope degree, slope direction, slope location, plant category, plant density, and biomass. Moreover, it has some spatial variability.
Keywords:gully region of loess plateau  small watershed  soil water  distribution characteristics
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