Exploring the role of land restoration in the spatial patterns of deep soil water at watershed scales

doi:10.1016/j.catena.2018.09.004

	Exploring the role of land restoration in the spatial patterns of deep soil water at watershed scales
	Zhao, Yali 1,2,4,5; Wang, Yunqiang 1,2,3; Wang, Li 1,4,5; Zhang, Xiaoyan 2; Yu, Yunlong 1,2; Jin, Zhao 2; Lin, Henry 2,6; Chen, Yiping 1,2; Zhou, Weijian 1,2,3; An, Zhisheng 1,2,3
刊名	CATENA
	2019
卷号	172 页码:387-396
关键词	Deep soil Land use Soil water management Grain for Green project Gully Land Consolidation project The Loess Plateau
ISSN号	0341-8162
DOI	10.1016/j.catena.2018.09.004
通讯作者	Wang, Yunqiang(wangyunq04@163.com)
英文摘要	Soil water is a key variable for re-vegetation and environmental restoration in water-limited terrestrial ecosystems such as the Chinese Loess Plateau. Large land restoration projects (e.g., the "Grain for Green" launched in 1999 and the "Gully Land Consolidation" launched in 2011) had substantial impacts on the storage, distribution, and spatial patterns of soil water, and these factors remain poorly understood across watershed scales. We measured the amount of water stored in soil layers from the surface down to 5 m depth and characterized the vertical distribution of gravimetric soil water content (SWC) among four land uses (cropland, shrubland, forestland, and orchard), two slope aspects (shady vs. sunny), and two landforms (slope vs. gully) in three watersheds on the Chinese Loess Plateau. All three of the watersheds were affected by Grain for Green project, two were affected by the Gully Land Consolidation project (named NG and GT-T watersheds) and one was unaffected by restoration efforts (named GT-U watershed). In the three watersheds, the slope and gully SWCs varied from 2.4 to 24.2% and from 4.8 to 46.6%, respectively, during the sampling period in October 2015 (end of the rainy season). The amount and vertical distribution of slope SWC differed significantly among the land uses and between shady and sunny slopes in the three watersheds (p < 0.05). The mean gully SWC (20.4%) was significantly higher than the mean slope SWC (8.7%) for each of the three watersheds (p < 0.01). Gullies filled by the Gully Land Consolidation project had a large capacity to store soil water by increasing the infiltration of precipitation, which accounted for 14.7% and 11.3% of the total annual rainfall in the NG and GT-T watersheds, respectively. Filled gullies can serve as large reservoirs of soil water to relieve the problem of water shortage and can also increase the amount of land available for cultivation to ease deficits in food production. A combination of the Grain for Green project on slopes for soil conservation and the Gully Land Consolidation project in gullies for storing more soil water and increasing farmland area is an effective land restoration strategy on the Chinese Loess Plateau and is helpful for managing water cycles in regions around the world with deep soils.
资助项目	National Natural Science Foundation of China[41571130083] ; National Natural Science Foundation of China[41471189] ; National Natural Science Foundation of China[41530854] ; National Natural Science Foundation of China[41722106] ; Ten Thousand Talent Program for Young top-notch talent ; Shannxi Science and Technology Coordinator Innovative Engineering Project[2015KTZDNY01-04]
WOS关键词	CHINESE LOESS PLATEAU ; CLIMATE-CHANGE ; HYDROLOGIC PERSPECTIVE ; ECOLOGICAL RESTORATION ; MOISTURE CONTENT ; GULLY CATCHMENT ; HILLY REGION ; VEGETATION ; VARIABILITY ; PROGRAM
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000449136800037
资助机构	National Natural Science Foundation of China ; Ten Thousand Talent Program for Young top-notch talent ; Shannxi Science and Technology Coordinator Innovative Engineering Project
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/14619]
专题	地球环境研究所_生态环境研究室
通讯作者	Wang, Yunqiang
作者单位	1.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 3.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China 4.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 5.Minist Water Resources, Yangling 712100, Shaanxi, Peoples R China 6.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA
推荐引用方式 GB/T 7714	Zhao, Yali,Wang, Yunqiang,Wang, Li,et al. Exploring the role of land restoration in the spatial patterns of deep soil water at watershed scales[J]. CATENA,2019,172:387-396.
APA	Zhao, Yali.,Wang, Yunqiang.,Wang, Li.,Zhang, Xiaoyan.,Yu, Yunlong.,...&An, Zhisheng.(2019).Exploring the role of land restoration in the spatial patterns of deep soil water at watershed scales.CATENA,172,387-396.
MLA	Zhao, Yali,et al."Exploring the role of land restoration in the spatial patterns of deep soil water at watershed scales".CATENA 172(2019):387-396.