干旱区生态环境知识资源中心(Arid): Salix psammophila afforestations can cause a decline of the water table, prevent groundwater recharge and reduce effective infiltration

Arid

DOI	10.1016/j.scitotenv.2021.146336
	Salix psammophila afforestations can cause a decline of the water table, prevent groundwater recharge and reduce effective infiltration
	Zhang, Zaiyong; Wang, Wenke; Gong, Chengcheng; Zhao, Ming; Franssen, Harrie-Jan Hendricks; Brunner, Philip
通讯作者	Wang, WK (corresponding author), Changan Univ, Minist Educ, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, Xian, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	780
英文摘要	Afforestation can reduce desertification and soil erosion. However, the hydrologic implications of afforestation are not well investigated, especially in arid and semi-arid regions. China has the largest area of afforestation in the world, with one-third of the world's total plantation forests. How the shrubs affect evapotranspiration, soil moisture dynamics, and groundwater recharge remains unclear. We designed two pairs of lysimeters, one being 1.2 m deep and the other one 4.2 m deep. Each pair consists of one lysimeter with bare soil, while on the other one a shrub is planted. The different water table depths were implemented to understand how depth to groundwater affects soil moisture and water table dynamics under different hydrological conditions. Soil moisture, water table depth, sap flow, and rainfall were measured concurrently. Our study confirms that for the current meteorological conditions in the Ordos plateau recharge is reduced or even prohibited through the large-scale plantation Salix psammophila. Shrubs also raise the threshold of precipitation required to increase soil moisture of the surface ground. For the conditions we analyzed, a minimum of 6 mm of precipitation was required for infiltration processes to commence. In addition to the hydrological analysis, the density of root distribution is assessed outside of the lysimeters for different water table depths. The results suggest that the root-density distribution is strongly affected by water table depth. Our results have important implications for the determination of the optimal shrub-density in future plantations, as well as for the conceptualization of plant roots in upcoming numerical models. (c) 2021 Elsevier B.V. All rights reserved.
英文关键词	Salix psammophila Lysimeter Groundwater recharge Root distribution Ecohydrology Evapotranspiration Soil moisture
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000653088700009
WOS关键词	US SANDY LAND ; CARBON SEQUESTRATION ; SURFACE RUNOFF ; SAP FLOW ; VEGETATION ; DESERT ; TREES ; DESERTIFICATION ; FLUCTUATIONS ; EVAPORATION
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/2XILL650/351670
作者单位	[Zhang, Zaiyong; Wang, Wenke; Gong, Chengcheng; Zhao, Ming; Brunner, Philip] Changan Univ, Minist Educ, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, Xian, Peoples R China; [Zhang, Zaiyong; Wang, Wenke; Gong, Chengcheng; Zhao, Ming] Changan Univ, Sch Water & Environm, Xian, Peoples R China; [Franssen, Harrie-Jan Hendricks] Forschungszentrum Julich, Agrosphere IBG 3, Julich, Germany; [Gong, Chengcheng; Brunner, Philip] Univ Neuchatel, Ctr Hydrogeol & Geotherm CHYN, Neuchatel, Switzerland
推荐引用方式 GB/T 7714	Zhang, Zaiyong,Wang, Wenke,Gong, Chengcheng,et al. Salix psammophila afforestations can cause a decline of the water table, prevent groundwater recharge and reduce effective infiltration[J],2021,780.
APA	Zhang, Zaiyong,Wang, Wenke,Gong, Chengcheng,Zhao, Ming,Franssen, Harrie-Jan Hendricks,&Brunner, Philip.(2021).Salix psammophila afforestations can cause a decline of the water table, prevent groundwater recharge and reduce effective infiltration.SCIENCE OF THE TOTAL ENVIRONMENT,780.
MLA	Zhang, Zaiyong,et al."Salix psammophila afforestations can cause a decline of the water table, prevent groundwater recharge and reduce effective infiltration".SCIENCE OF THE TOTAL ENVIRONMENT 780(2021).