干旱区生态环境知识资源中心(Arid): Using MODIS data to analyse the ecosystem water use efficiency spatial-temporal variations across Central Asia from 2000 to 2014

Arid

DOI	10.1016/j.envres.2019.108985
	Using MODIS data to analyse the ecosystem water use efficiency spatial-temporal variations across Central Asia from 2000 to 2014
	Zou, Jie 1,2; Ding, Jianli1,2 ; Welp, Martin 3; Huang, Shuai 1,2; Liu, Bohua 1,2
通讯作者	Ding, Jianli
来源期刊	ENVIRONMENTAL RESEARCH
ISSN	0013-9351
EISSN	1096-0953
出版年	2020
卷号	182
英文摘要	It is important to understand the carbon-water cycle, which accurately reflects the temporal and spatial variabilities in ecosystem water use efficiency (WUE). In this study, the Mann-Kendall (MK) test was used to study the variabilities in the spatial patterns of the gross primary production (GPP), evapotranspiration and WUE across Central Asia [the Xinjiang Uyghur Autonomous Region (XJ) in China (CHN), Kazakhstan (KAZ), Turkmenistan (TKM), Uzbekistan (UZB), Kyrgyzstan (KGZ), and Tajikistan (TJK)] from 2000 to 2014. We compared the change results by country, land cover type, population density, and human influence. In addition, the results of GPP, evapotranspiration (ET), and WUE parameter tests were combined and classified to analyse the causes of the changes in WUE. The results showed that (1) the time series of GPP, ET and WUE exhibited no significant changes. The spatial distribution of the WUE exhibited significant increases in the northern part of KAZ, the Ili Valley and the alpine region in KGZ and exhibited decreases in south Xinjiang and the irrigated area of UZB. (2) The main land cover types that exhibited changes in WUE were farmlands and grasslands, and areas with a medium population density exhibited large WUE changes. (3) The increased WUE resulted from an increased GPP and decreased ET. The increased GPP was because of increased precipitation and the Green for Grain Project, and the decreased ET was due to the response of vegetation to drought stress; the decreased WUE was mainly caused by changes in the crops planted and unreasonable water use practices in the irrigated agricultural areas in Central Asia. This study, which is based on the variabilities in WUE spatial patterns, should provide a theoretical basis for ecosystems in arid land areas.
英文关键词	Ecosystem water use efficiency Central Asia Land cover type Population density
类型	Article
语种	英语
国家	Peoples R China ; Germany
收录类别	SCI-E
WOS记录号	WOS:000516094400012
WOS关键词	CLIMATE-CHANGE ; RESPONSES ; EQUIVALENCE ; DEGRADATION ; TEMPERATURE ; DYNAMICS ; DROUGHT ; LAST
WOS类目	Environmental Sciences ; Public, Environmental & Occupational Health
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314441
作者单位	1.Xinjiang Univ, Coll Resources & Environm Sci, Key Lab Smart City & Environm Modelling, Higher Educ Inst, Urumqi 830046, Peoples R China; 2.Xinjiang Univ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China; 3.Eberswalde Univ Sustainable Dev, Fac Forest & Environm, D-16225 Eberswalde, Germany
推荐引用方式 GB/T 7714	Zou, Jie,Ding, Jianli,Welp, Martin,et al. Using MODIS data to analyse the ecosystem water use efficiency spatial-temporal variations across Central Asia from 2000 to 2014[J]. 新疆大学,2020,182.
APA	Zou, Jie,Ding, Jianli,Welp, Martin,Huang, Shuai,&Liu, Bohua.(2020).Using MODIS data to analyse the ecosystem water use efficiency spatial-temporal variations across Central Asia from 2000 to 2014.ENVIRONMENTAL RESEARCH,182.
MLA	Zou, Jie,et al."Using MODIS data to analyse the ecosystem water use efficiency spatial-temporal variations across Central Asia from 2000 to 2014".ENVIRONMENTAL RESEARCH 182(2020).