干旱区生态环境知识资源中心(Arid): Soil moisture response to land use and topography across a semi-arid watershed: Implications for vegetation restoration on the Chinese Loess Plateau

Arid

DOI	10.1007/s11629-021-6830-3
	Soil moisture response to land use and topography across a semi-arid watershed: Implications for vegetation restoration on the Chinese Loess Plateau
	Xia Lu; Bi Ru-tian; Song Xiao-yu; Hu Wei; Lyu Chun-juan; Xi Xu; Li Huai-you
通讯作者	Xia, L (corresponding author), Shanxi Agr Univ, Coll Resources & Environm, Taigu 030801, Peoples R China.
来源期刊	JOURNAL OF MOUNTAIN SCIENCE
ISSN	1672-6316
EISSN	1993-0321
出版年	2022
英文摘要	Soil moisture is a limiting factor of ecosystem development in the semi-arid Loess Plateau. Characterizing the soil moisture response to its dominant controlling factors, such as land use and topography, and quantifying the soil-water carrying capacity for revegetation is of great significance for vegetation restoration in this region. In this study, soil moisture was monitored to a depth of 2 m in three land use types (native grassland, introduced grassland, and forestland), two landforms (hillslope and gully), and two slope aspects (sunny and shady) in the Nanxiaohegou watershed of the Loess Plateau, Northwest China. The MIKE SHE model was then applied to simulate the soil moisture dynamics under different conditions and determine the optimal plant coverage. Results showed that the average soil moisture was higher in native grassland than in introduced grassland and Platycladus orientalis forestland for a given topographic condition; however, a high soil moisture content was found in Robinia pseudoacacia forestland, with a value that was even higher than the native grassland of a sunny slope. The divergent results in the two forestlands were likely attributed to the differences in plant coverage. Gully regions and shady slopes usually had higher soil moisture, while lower soil moisture was usually distributed on the hillslope and sunny slope. Furthermore, the mean absolute relative error and Nash-Sutcliffe efficiency coefficient of the MIKE SHE model ranged between 2.8%-7.8% and 0.550-0.902, respectively, indicating that the model could effectively simulate the soil moisture dynamics. The optimal plant coverage was thus determined for hillslope P. orientalis by the model, corresponding to a leaf area index (LAI) value of 1.92. Therefore, for sustainable revegetation on the Loess Plateau, selecting suitable land use types (natural vegetation), controlling the planting density/LAI, and selecting proper planting locations (gully and shady slope regions) should be considered by local policy makers to avoid the over-consumption of soil water resources.
英文关键词	Soil moisture MIKE SHE Optimal plant coverage Land use Topography
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000717932900004
WOS关键词	SPATIAL VARIABILITY ; PLANT COVERAGE ; RE-VEGETATION ; CATCHMENT ; DYNAMICS ; AFFORESTATION ; PATTERNS ; IMPACTS ; CLIMATE ; BALANCE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367670
作者单位	[Xia Lu; Bi Ru-tian; Hu Wei; Lyu Chun-juan] Shanxi Agr Univ, Coll Resources & Environm, Taigu 030801, Peoples R China; [Song Xiao-yu] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Peoples R China; [Hu Wei] New Zealand Inst Plant & Food Res Ltd, Private Bag 4704, Christchurch 8140, New Zealand; [Xi Xu] Suzhou Univ Sci & Technol, Sch Geog Sci & Geomat Engn, Suzhou 215000, Peoples R China; [Li Huai-you] Yellow River Conservancy Commiss, Xifeng Sci Expt Stn Soil & Water Conservat, Qingyang 745000, Peoples R China
推荐引用方式 GB/T 7714	Xia Lu,Bi Ru-tian,Song Xiao-yu,et al. Soil moisture response to land use and topography across a semi-arid watershed: Implications for vegetation restoration on the Chinese Loess Plateau[J],2022.
APA	Xia Lu.,Bi Ru-tian.,Song Xiao-yu.,Hu Wei.,Lyu Chun-juan.,...&Li Huai-you.(2022).Soil moisture response to land use and topography across a semi-arid watershed: Implications for vegetation restoration on the Chinese Loess Plateau.JOURNAL OF MOUNTAIN SCIENCE.
MLA	Xia Lu,et al."Soil moisture response to land use and topography across a semi-arid watershed: Implications for vegetation restoration on the Chinese Loess Plateau".JOURNAL OF MOUNTAIN SCIENCE (2022).