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题名: Variability in Soil Hydraulic Conductivity and Soil Hydrological Response Under Different Land Covers in the Mountainous Area of the Heihe River Watershed, Northwest China
作者: Tian, J; Zhang, BQ; He, CS; Yang, LX
收录类别: SCIE
出版日期: 2017-05
刊名: LAND DEGRADATION & DEVELOPMENT
卷号: 28, 期号:4, 页码:1437-1449
出版者: WILEY
出版地: HOBOKEN
英文摘要: Understanding the variability in soil hydraulic conductivity in the mountainous headwaters is critical to the modeling of mountainous runoff and the water resources management of river basins, especially in the arid and semiarid areas. In this study, a total of 32 soil profiles with five layers within 0-70cm were sampled under different land cover types: forest, meadow, high coverage grassland (HCG), medium coverage grassland (MCG), and barren land in the upper stream of the Heihe river watershed, Northwest China. Saturated hydraulic conductivity (K-S) was measured for each sample. The vertical variation of K-S and soil hydrological response under different land covers were analyzed. Results show that K-S value in layer 5 was significantly lower than the values of above four layers. K-S decreased in the order of forest, meadow, HCG, MCG, and barren land, corresponding to the degree of vegetation degradation. The K-S decreased with depth under forest, HCG, and barren land, but increased first and then decreased under meadow and MCG. The dominant stormflow paths for different land covers were different: forest was dominated by deep percolation, HCG was dominated by subsurface flow (SSF), meadow was prevailed by Hortonian overland flow and had no SSF, while MCG and barren land were also dominated by Hortonian overland flow, but still formed SSF. This result provides important information for improving the accuracy of mountainous hydrological modeling and, in turn, leading to sustainable management of water resources in the study watershed. Copyright (c) 2016 John Wiley & Sons, Ltd.
关键词: saturated hydraulic conductivity ; soil hydrological response ; land cover ; the Heihe river watershed ; mountainous area
作者部门: [Tian, Jie ; Zhang, Baoqing ; He, Chansheng ; Yang, Lixiao] Lanzhou Univ, Minist Educ, Coll Earth & Environm Sci,Key Lab West Chinas Env, Ctr Dryland Water Resources Res & Watershed Sci, Lanzhou 730000, Gansu, Peoples R China ; [He, Chansheng] Western Michigan Univ, Dept Geog, Kalamazoo, MI 49008 USA
通讯作者: Zhang, BQ ; He, CS (reprint author), Lanzhou Univ, Minist Educ, Coll Earth & Environm Sci,Key Lab West Chinas Env, Ctr Dryland Water Resources Res & Watershed Sci, Lanzhou 730000, Gansu, Peoples R China.
学科分类: Environmental Sciences & Ecology; Agriculture
文章类型: Article
所属项目编号: National Natural Science Foundation of China [91125010, 41530752] ; Scherer Endowment Fund of Department of Geography, Western Michigan University
所属项目名称: 国家自然科学基金项目
项目资助者: NSFC
语种: 英语
DOI: 10.1002/ldr.2665
ISSN号: 1085-3278
WOS记录号: WOS:000401322900025
IR记录号: WOS:000401322900025
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189862
Appears in Collections:资源环境学院_期刊论文

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作者单位: 12ENVIROM

Recommended Citation:
Tian, J,Zhang, BQ,He, CS,et al. Variability in Soil Hydraulic Conductivity and Soil Hydrological Response Under Different Land Covers in the Mountainous Area of the Heihe River Watershed, Northwest China[J]. LAND DEGRADATION & DEVELOPMENT,2017,28(4):1437-1449.
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