干旱区生态环境知识资源中心(Arid): Assessing the Response of Ecosystem Water Use Efficiency to Drought During and after Drought Events across Central Asia

Arid

DOI	10.3390/s20030581
	Assessing the Response of Ecosystem Water Use Efficiency to Drought During and after Drought Events across Central Asia
	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	SENSORS
EISSN	1424-8220
出版年	2020
卷号	20 期号:3
英文摘要	The frequency and intensity of drought are expected to increase worldwide in the future. However, it is still unclear how ecosystems respond to drought. Ecosystem water use efficiency (WUE) is an essential ecological index used to measure the global carbon-water cycles, and is defined as the carbon absorbed per unit of water lost by the ecosystem. In this study, we applied gross primary productivity (GPP), evapotranspiration (ET), land surface temperature (LST), and normalized difference vegetation index (NDVI) data to calculate the WUE and drought index (temperature vegetation dryness index (TVDI)), all of which were retrieved from moderate resolution imaging spectroradiometer (MODIS) data. We compared the mean WUE across different vegetation types, drought classifications, and countries. The temporal and spatial changes in WUE and drought were analyzed. The correlation between drought and WUE was calculated and compared across different vegetation types, and the differences in WUE between drought and post-drought periods were compared. The results showed that (1) ecosystems with a low (high) productivity had a high (low) WUE, and the mean ecosystem WUE of Central Asia showed vast differences across various drought levels, countries, and vegetation types. (2) The WUE in Central Asia exhibited an increasing trend from 2000 to 2014, and Central Asia experienced both drought (from 2000 to 2010) and post-drought (from 2011 to 2014) periods. (3) The WUE showed a negative correlation with drought during the drought period, and an obvious drought legacy effect was found, in which severe drought affected the ecosystem WUE over the following two years, while a positive correlation between WUE and drought was found in the post-drought period. (4) A significant increase in ecosystem WUE was found after drought, which revealed that arid ecosystems exhibit high resilience to drought stress. Our results can provide a specific reference for understanding how ecosystems will respond to climate change.
英文关键词	water use efficiency drought arid land legacy effect resilience
类型	Article
语种	英语
国家	Peoples R China ; Germany
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000517786200005
WOS关键词	EVAPOTRANSPIRATION PRODUCTS ; MODIS ; VEGETATION ; CARBON ; CLIMATE ; DYNAMICS ; FOREST ; IMPROVEMENTS ; RESILIENCE ; SHRUBLAND
WOS类目	Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
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/2XILL650/315567
作者单位	1.Xinjiang Univ, Xinjiang Common Univ, Coll Resources & Environm Sci, Key Lab Smart City & Environm Stimulat, Urumqi 830046, Peoples R China; 2.Xinjiang Univ, Minist Educ, 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. Assessing the Response of Ecosystem Water Use Efficiency to Drought During and after Drought Events across Central Asia[J]. 新疆大学,2020,20(3).
APA	Zou, Jie,Ding, Jianli,Welp, Martin,Huang, Shuai,&Liu, Bohua.(2020).Assessing the Response of Ecosystem Water Use Efficiency to Drought During and after Drought Events across Central Asia.SENSORS,20(3).
MLA	Zou, Jie,et al."Assessing the Response of Ecosystem Water Use Efficiency to Drought During and after Drought Events across Central Asia".SENSORS 20.3(2020).