干旱区生态环境知识资源中心(Arid): Response of ecosystem functioning to environmental variations in an artificial sand-binding vegetation desert in northwestern China

Arid

DOI	10.1007/s11356-020-08035-5
	Response of ecosystem functioning to environmental variations in an artificial sand-binding vegetation desert in northwestern China
	Zhou, Yuanyuan 1,2; Li, Xinrong1 ; Gao, Yanhong 1; Wang, Yanli 1,2; Mao, Zhongchao 1,2
通讯作者	Li, Xinrong
来源期刊	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN	0944-1344
EISSN	1614-7499
出版年	2020
卷号	27 期号:13 页码:15325-15336
英文摘要	The establishment of artificial sand-binding vegetation is one of the main means for restoring damaged ecosystems that are impacted by global change. This study was conducted to evaluate the influence of environmental factors on ecosystem function (net ecosystem exchange (NEE), evapotranspiration (ET), and water use efficiency (WUE)) in an artificial sand-binding vegetation desert (with dominant shrubs, such as Artemisia ordosica and Caragana korshinskii, and herbaceous plants) in northwestern China. NEE, ET, and meteorological data were observed with the eddy covariance (EC) technique. The random forest (RF) method was used to identify major environmental factors that affected NEE, ET, and WUE. Our results showed that the mean annual NEE, ET, and WUE values were - 112.4 g C m(-2), 232.1 mm, and 0.49 g C kg(-1) H2O, respectively, during the 2015 to 2018 growing seasons. At the weekly scale, the most important drivers of NEE were the normalized difference vegetation index (NDVI) and soil water content (SWC). Rainfall, SWC, and NDVI were important drivers of ET. WUE was mainly controlled by rainfall and SWC. Linear regression showed that NEE had significant negative relationships with the NDVI and SWC. ET had positive relationships with rainfall, SWC, and the NDVI. WUE had significant negative relationships with SWC and rainfall. These findings indicate that drought inhibited ET more than carbon absorption, thus promoting the WUE of the ecosystem to some extent. The close relation of the ecosystem function to SWC implies that this ecosystem may be critically regulated by future climate change (specifically, changes in rainfall patterns).
英文关键词	Artificial sand-binding vegetation Eddy covariance Random forest Net ecosystem exchange Evapotranspiration Water use efficiency
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000516330400003
WOS关键词	WATER-USE EFFICIENCY ; CARBON-DIOXIDE EXCHANGE ; NET PRIMARY PRODUCTION ; TENGGER DESERT ; SOIL-WATER ; CARAGANA-KORSHINSKII ; SEASONAL-VARIATION ; EDDY COVARIANCE ; INTERANNUAL VARIATIONS ; GRASSLAND ECOSYSTEMS
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/2XILL650/314467
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yuanyuan,Li, Xinrong,Gao, Yanhong,et al. Response of ecosystem functioning to environmental variations in an artificial sand-binding vegetation desert in northwestern China[J],2020,27(13):15325-15336.
APA	Zhou, Yuanyuan,Li, Xinrong,Gao, Yanhong,Wang, Yanli,&Mao, Zhongchao.(2020).Response of ecosystem functioning to environmental variations in an artificial sand-binding vegetation desert in northwestern China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,27(13),15325-15336.
MLA	Zhou, Yuanyuan,et al."Response of ecosystem functioning to environmental variations in an artificial sand-binding vegetation desert in northwestern China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 27.13(2020):15325-15336.