干旱区生态环境知识资源中心(Arid): Modelling the artificial forest (Robinia pseudoacacia L.) root-soil water interactions in the Loess Plateau, China

Arid

DOI	10.5194/hess-26-17-2022
	Modelling the artificial forest (Robinia pseudoacacia L.) root-soil water interactions in the Loess Plateau, China
	Li, Hongyu; Luo, Yi; Sun, Lin; Li, Xiangdong; Ma, Changkun; Wang, Xiaolei; Jiang, Ting; Zhu, Haoyang
通讯作者	Luo, Y (corresponding author)，Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China. ; Luo, Y (corresponding author)，Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China. ; Luo, Y (corresponding author)，Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China.
来源期刊	HYDROLOGY AND EARTH SYSTEM SCIENCES
ISSN	1027-5606
EISSN	1607-7938
出版年	2022
卷号	26 期号:1 页码:17-34
英文摘要	Plant root-soil water interactions are fundamental to vegetation-water relationships. Soil water availability and distribution impact the temporal-spatial dynamics of roots and vice versa. In the Loess Plateau (LP) of China, where semi-arid and arid climates prevail and deep loess soil dominates, drying soil layers (DSLs) have been extensively reported in artificial forestland. While the underlying mechanisms that cause DSLs remain unclear, they hypothetically involve root-soil water interactions. Although available root growth models are weak with respect to simulating the rooting depth, this study addresses the hypothesis of the involvement of root-soil water interactions in DSLs using a root growth model that simulates both the dynamic rooting depth and fine-root distribution, coupled with soil water, based on cost-benefit optimization. Evaluation of field data from an artificial black locust (Robinia pseudoacacia L.) forest site in the southern LP positively proves the model's performance. Further, a long-term simulation, forced by a 50-year climatic data series with varying precipitation, was performed to examine the DSLs. The results demonstrate that incorporating the dynamic rooting depth into the current root growth models is necessary to reproduce soil drying processes. The simulations revealed that the upper boundary of the DSLs fluctuates strongly with infiltration events, whereas the lower boundary extends successively with increasing rooting depth. Most infiltration was intercepted by the top 2.0m layer, which was the most active zone of infiltration and root water uptake. Below this, the percentages of fine roots (5.0 %) and water uptake (6.2 %) were small but caused a persistently negative water balance and consequent DSLs. Therefore, the proposed root-water interaction approach succeeded in revealing the intrinsic properties of DSLs; their persistent extension and the lack of an opportunity for recovery from the drying state may adversely affect the implementation of artificial afforestation in this region as well as in other regions with similar climates and soils.
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000739360900001
WOS关键词	LEAF-AREA ; MOISTURE DECLINE ; NOAH-MP ; CARBON ; DISTRIBUTIONS ; DYNAMICS ; GROWTH ; REPRESENTATION ; VALIDATION ; PRODUCTS
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376626
作者单位	[Li, Hongyu; Luo, Yi; Sun, Lin; Wang, Xiaolei; Jiang, Ting; Zhu, Haoyang] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; [Li, Hongyu; Luo, Yi; Wang, Xiaolei; Jiang, Ting; Zhu, Haoyang] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; [Luo, Yi] Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China; [Li, Xiangdong] Guangdong Inst Ecoenvironm Sci & Technol, Guangdong Key Lab Integrated Agroenvironm Pollut, Guangzhou 510650, Peoples R China; [Ma, Changkun] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Peoples R China
推荐引用方式 GB/T 7714	Li, Hongyu,Luo, Yi,Sun, Lin,et al. Modelling the artificial forest (Robinia pseudoacacia L.) root-soil water interactions in the Loess Plateau, China[J],2022,26(1):17-34.
APA	Li, Hongyu.,Luo, Yi.,Sun, Lin.,Li, Xiangdong.,Ma, Changkun.,...&Zhu, Haoyang.(2022).Modelling the artificial forest (Robinia pseudoacacia L.) root-soil water interactions in the Loess Plateau, China.HYDROLOGY AND EARTH SYSTEM SCIENCES,26(1),17-34.
MLA	Li, Hongyu,et al."Modelling the artificial forest (Robinia pseudoacacia L.) root-soil water interactions in the Loess Plateau, China".HYDROLOGY AND EARTH SYSTEM SCIENCES 26.1(2022):17-34.