Soil Moisture Characteristics of Micro-topography in South Slope of Loess Region in Northern Shanxi Province

WANG Jing; ZHU Qing-ke; ZHAO Hui; YUN Lei; LIU Zhong-qi; KUANG Gao-ming; XIE Jing

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Soil Moisture Characteristics of Micro-topography in South Slope of Loess Region in Northern Shanxi Province

- Soil Moisture Characteristics of Micro-topography in South Slope of Loess Region in Northern Shanxi Province
- Bulletin of Soiland Water Conservation Vol. 30, Issue 4, Pages: 16-21(2011)
- 作者机构：
  
  1. 北京林业大学水土保持与荒漠化防治教育部重点实验室,北京,100083
  2. 国家林业局昆明勘察设计院,云南,昆明,650216
  3. 内蒙古民族大学,内蒙古,通辽,028000
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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WANG Jing, ZHU Qing-ke, ZHAO Hui, et al. Soil Moisture Characteristics of Micro-topography in South Slope of Loess Region in Northern Shanxi Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 16-21.
DOI：

WANG Jing, ZHU Qing-ke, ZHAO Hui, et al. Soil Moisture Characteristics of Micro-topography in South Slope of Loess Region in Northern Shanxi Province[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 16-21. DOI：

摘要

采用定点动态监测的方法对陕西省吴起县合沟流域内的阳坡微地形土壤含水量进行了对比研究。结果表明：(1)微地形土壤水分的季节变化滞后于降雨的季节变化，其对土壤含水量的影响旱季大于雨季；(2)在0—180 cm土层中，随着土层深度的增加，微地形土壤含水量呈增加的趋势，变异系数减小；(3)微地形不同土层的土壤含水量具有差异，在0—20 cm土层，所有微地形土壤含水量均大于对照坡面，土壤含水量呈现：缓台>塌陷>切沟>陡坎>浅沟；20—80 cm土层土壤含水量则表现为：切沟>缓台>塌陷>陡坎>浅沟>坡面；80—180 cm土层中，土壤含水量最大的是缓台，坡面、浅沟、切沟土壤含水量相差不多，陡坎土壤含水量比坡面略小，塌陷土壤含水量最小。

Abstract

The micro-topography soil moisture content of south slope in Hevalley of Wuqi County

Shanxi Province was researched by the method of dynamic fixed-point monitor.The results showed that:(1)The seasonal variation of micro-topography soil moisture lagged behind the rainfall seasonal variation

its influence on soil moisture content of dryseason was more obvious than that of rainy season.(2)In the 0180cm soil layer

the micro-topography soil moisture content tended to increase and the coefficient of variation reduced with the increase of soil depth.(3)There existed differences between micro-topog raphy soil moisture content for different soil layers.In soil layer of 020cm

all the micro-topog raphy soil moisture was bigger than the comparison slope and t he order was plat form

collapse

dissected valley

steep slope

shallow gully;the order of soil moisture in 2080cm soil layer was dissected valley

plat form

collapse

steep slope

shallow gully

comparison slope;in 80 180cm soil layer

the micro-topography with the big gestsoil moistur econtent was platform

comparison slope

shallow gully and dissected valley were almost the same

steep slope was a little bit smaller than comparison slope

collapse was the smallest.

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