Soil Water Distribution Characteristics in Wangdonggou Watershed in Gully Region of Loess Plateau

HE Fuhong; HUANG Mingbin; DANG Tinghui

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Soil Water Distribution Characteristics in Wangdonggou Watershed in Gully Region of Loess Plateau

- Soil Water Distribution Characteristics in Wangdonggou Watershed in Gully Region of Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 21, Issue 4, Pages: 6-9(2002)
- 作者机构：
  
  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
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- Published：2002
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HE Fuhong, HUANG Mingbin, DANG Tinghui. Soil Water Distribution Characteristics in Wangdonggou Watershed in Gully Region of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2002, 21(4): 6-9.
DOI：

HE Fuhong, HUANG Mingbin, DANG Tinghui. Soil Water Distribution Characteristics in Wangdonggou Watershed in Gully Region of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2002, 21(4): 6-9. DOI：

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 0-2m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

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 2m soil profile. In the soil profile below 2m

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 465.3mm

452.8mm

450.2mm

and 424mm in 2m soil profile; and 627 mm

620.6 mm

598.8 mm

and 542.7mm in 3m soil profile. In general

farm land grass land orchard landforest 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.

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references

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