干旱区生态环境知识资源中心(Arid): Sensitivity of soil moisture to precipitation and temperature over China: Present state and future projection

Arid

DOI	10.1016/j.scitotenv.2019.135774
	Sensitivity of soil moisture to precipitation and temperature over China: Present state and future projection
	Zhu, Bowen; Xie, Xianhong; Meng, Shanshan; Lu, Chuiyu; Yao, Yi
通讯作者	Xie, XH (corresponding author), Beijing Normal Univ, Beijing, Peoples R China.
会议名称	4th International Conference on Contaminated Land, Ecological Assessment and Remediation (CLEAR) - Green and Sustainable Land Remediation
会议日期	AUG 16-18, 2018
会议地点	Hong Kong Polytechn Univ, Hong Kong, HONG KONG
英文摘要	Soil moisture (SM) is a key variable in the climate system as it regulates the latent and sensible heat partition and influences eco-hydrological processes. A few studies have highlighted the increasing frequency of SM droughts at the river basin scale in China, however, little is known about the SM response to precipitation (P) and nearsurface temperature (1) at national and regional scales. In this study, the long-term SM dynamics based on a sophisticated land surface hydrological model (i.e., the Variable Infiltration Capacity, VIC) were identified after model evaluation. A simple but effective sensitivity-based approach was developed to quantify the elasticity (epsilon) and sensitivity (S) of SM to P and T, and the SM was projected for the near future at the regional scale. The results indicate that China has experienced slightly wetter soil conditions during the past five decades and the SM has increased in the arid and semi-arid regions of China, i.e., the North East (0.11 mm/yr) and the North West (0.047 mm/yr). The elasticity and the sensitivity of SM are the highest in the humid region (i.e., South East China), indicating that small increases of P and T are likely to induce considerable changes in the SM relative to other regions. The sensitivity-based approach could perform SM estimation similar to the complex VIC modeling. This approach projected that North China (-5.05 +/- 231%) and South West China (-5.95 +/- 2.04%) are likely to experience drying with a considerable decline in SM due to reduction in P and rise in T in the near future period from 2020 to 2050. The slightly wet soil conditions in the past and a drying future scenario may imply a contrasting consequence for the regional-scale hydrological cycles. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Soil moisture Sensitivity Climate change Land surface modeling
来源出版物	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	705
出版者	ELSEVIER
类型	Article; Proceedings Paper
语种	英语
国家	Peoples R China
收录类别	CPCI-S
WOS记录号	WOS:000508129700037
WOS关键词	CLIMATE-CHANGE IMPACTS ; LAND-SURFACE MODEL ; AGRICULTURAL PRODUCTION ; WATER-RESOURCES ; RIVER-BASINS ; 4 DECADES ; TRENDS ; RUNOFF ; REGION ; CMIP5
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/313873
作者单位	[Zhu, Bowen; Xie, Xianhong; Meng, Shanshan; Yao, Yi] Beijing Normal Univ, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China; [Zhu, Bowen; Xie, Xianhong; Meng, Shanshan; Yao, Yi] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China; [Zhu, Bowen; Xie, Xianhong; Meng, Shanshan; Yao, Yi] Beijing Normal Univ, Inst Remote Sensing Sci & Engn, Beijing Engn Res Ctr Global Land Remote Sensing P, Fac Geog Sci, Beijing 100875, Peoples R China; [Lu, Chuiyu] China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Bowen,Xie, Xianhong,Meng, Shanshan,et al. Sensitivity of soil moisture to precipitation and temperature over China: Present state and future projection[C]:ELSEVIER,2020.