| 陕北黄土区阳坡微地形土壤水分特征研究 |
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| 引用本文： | 王晶,朱清科,赵荟,云雷,刘中奇,邝高明,谢静.陕北黄土区阳坡微地形土壤水分特征研究[J].水土保持通报,2011(4):16-21. |
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| 作者姓名： | 王晶 朱清科 赵荟 云雷 刘中奇 邝高明 谢静 |
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| 作者单位： | 北京林业大学水土保持与荒漠化防治教育部重点实验室;国家林业局昆明勘察设计院;内蒙古民族大学; |
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| 基金项目： | “十一五”国家科技支撑项目“困难立地工程造林关键技术研究”(2006BAD03A03) |
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| 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。
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| 关 键 词： | 微地形 土壤水分 季节变化 垂直变化 |
| 收稿时间： | 2010/10/6 0:00:00 |
| 修稿时间： | 2010/12/4 0:00:00 |
Soil Moisture Characteristics of Micro-topography in South Slope of Loess Region in Northern Shanxi Province |
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| WANG Jing,ZHU Qing-ke,ZHAO Hui,YUN Lei,LIU Zhong-qi,KUANG Gao-ming and XIE Jing.Soil Moisture Characteristics of Micro-topography in South Slope of Loess Region in Northern Shanxi Province[J].Bulletin of Soil and Water Conservation,2011(4):16-21. |
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| Authors: | WANG Jing ZHU Qing-ke ZHAO Hui YUN Lei LIU Zhong-qi KUANG Gao-ming and XIE Jing |
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| Institution: | WANG Jing1,ZHU Qing-ke1,ZHAO Hui1,2,YUN Lei1,LIU Zhong-qi1,3,KUANG Gao-ming1,XIE Jing1(1.Key Laboratory of Soil and Water Conservation and DesertificationCombating of Ministry of Education,Beijing Forestry University,Beijing 100083,China,2.Kunming Survey and Design Institute of State Forestry Adminastration,Kunming,Yunnan650216,3.Inner Mongolia University for the Nationalities,Tongliao,Inner Mongolia 028000,China) |
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| 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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| Keywords: | micro-topography soil moisture seasonal variation vertical variation |
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