干旱区生态环境知识资源中心(Arid): Determination of the optimal ecological water conveyance volume for vegetation restoration in an arid inland river basin, northwestern China

Arid

DOI	10.1016/j.scitotenv.2021.147775
	Determination of the optimal ecological water conveyance volume for vegetation restoration in an arid inland river basin, northwestern China
	Hu, Shun; Ma, Rui; Sun, Ziyong; Ge, Mengyan; Zeng, Linglin; Huang, Feng; Bu, Jianwei; Wang, Zheng
通讯作者	Ma, R (corresponding author), China Univ Geosci, Sch Environm Studies, Hubei Key Lab Yangtze River Basin Environm Aquat, Wuhan 430074, Peoples R China. ; Ma, R (corresponding author), China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	788
英文摘要	Overexploitation of water resources has led to severe ecological degradation and even desertification in some arid inland river basins, northwestern China. To alleviate or restore the degraded vegetation ecosystem, ecological water conveyance (EWC) has become an important and effective measure. Scientific assessment of the impact of EWC on vegetation restoration and determination of the corresponding optimal EWC volume (EWCV) are important to formulate rational ecological water management. In this study, long time series normalized difference vegetation index (NDVI) was used to extract the restored vegetation area in Qingtu Lake area, a terminal lake in inland Shiyang River basin, northwestern China. The relationship between restored vegetation coverage and EWC was explored to determine the optimal EWCV. The restored vegetation area (RVA) increased dramatically in the first five years and became stable from 2016. The time lag of the response of RVA increase to EWC was about 2 years. A bell-shaped function between RVA and groundwater depth was obtained based on the results from Unmanned Aerial Vehicle (UAV) and micro terrain of the lake area. Based on the fitted function, five groundwater depth thresholds were obtained. The optimal groundwater depth in the hydrometric station was 2.91 +/- 0.09 m for the maximal RVA (17.08 +/- 3.25 km(2)). A polynomial function between the yearly EWCV and groundwater depth was developed and the EWCV thresholds corresponding to the groundwater depth thresholds were estimated. The optimal EWCV into Qingtu Lake was 2224.4 x 10(4) m(3) for the maximal RVA. The correspondingly optimal EWCV from Hongyashan Reservoir was 3271.4 x 10(4) m(3). The spatial distribution patterns of remotely sensed water surface and NDVI suggested that expanding the water-receiving area of conveyed water was useful to improve the vegetation growth. This study provides a reference for assessing the impact of EWC on vegetation restoration and determining the correspondingly optimal EWCV in arid inland river basins. (C) 2021 Elsevier B.V. All rights reserved.
英文关键词	Ecological water conveyance Groundwater depth Vegetation restoration Northwestern China Remote sensing
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000662648800001
WOS关键词	LOWER TARIM RIVER ; LOWER REACHES ; POPULUS-EUPHRATICA ; GROUNDWATER DYNAMICS ; LEAF-AREA ; XINJIANG ; PROJECT ; MANAGEMENT ; IMPACTS ; INDEXES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	河海大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351688
作者单位	[Hu, Shun; Ma, Rui; Sun, Ziyong; Ge, Mengyan; Bu, Jianwei; Wang, Zheng] China Univ Geosci, Sch Environm Studies, Hubei Key Lab Yangtze River Basin Environm Aquat, Wuhan 430074, Peoples R China; [Hu, Shun; Ma, Rui; Sun, Ziyong; Ge, Mengyan; Bu, Jianwei; Wang, Zheng] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China; [Zeng, Linglin] Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Peoples R China; [Huang, Feng] Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China
推荐引用方式 GB/T 7714	Hu, Shun,Ma, Rui,Sun, Ziyong,et al. Determination of the optimal ecological water conveyance volume for vegetation restoration in an arid inland river basin, northwestern China[J]. 河海大学,2021,788.
APA	Hu, Shun.,Ma, Rui.,Sun, Ziyong.,Ge, Mengyan.,Zeng, Linglin.,...&Wang, Zheng.(2021).Determination of the optimal ecological water conveyance volume for vegetation restoration in an arid inland river basin, northwestern China.SCIENCE OF THE TOTAL ENVIRONMENT,788.
MLA	Hu, Shun,et al."Determination of the optimal ecological water conveyance volume for vegetation restoration in an arid inland river basin, northwestern China".SCIENCE OF THE TOTAL ENVIRONMENT 788(2021).