Spatiotemporal patterns of water use efficiency in China and responses to multi-scale drought

doi:10.1007/s00704-020-03103-9

	Spatiotemporal patterns of water use efficiency in China and responses to multi-scale drought
	Zhao, Anzhou 2,3; Zhang, Anbing 3; Cao, Sen 1,4,5,6; Feng, Lili 3; Pei, Tao 2
刊名	THEORETICAL AND APPLIED CLIMATOLOGY
	2020-04-01
卷号	140 期号:1-2 页码:559-570
ISSN号	0177-798X
DOI	10.1007/s00704-020-03103-9
通讯作者	Zhao, Anzhou(zhaoanzhou@126.com)
英文摘要	Drought is a natural disaster that profoundly affects the carbon and water cycles in terrestrial ecosystems. Quantifying the responses of terrestrial carbon and water cycles to drought is crucial for assessing the impacts of climate variability on these ecosystems. Using Moderate Resolution Imaging Spectroradiometer gross primary productivity (GPP) and evapotranspiration (ET) products, this study evaluated the spatiotemporal patterns and trends of water use efficiency (WUE) for China's terrestrial ecosystems from 2000 to 2014 and analyzed their responses to multi-scale drought across different river basins, vegetation types, and climatic zones. The key findings are as follows: (1) The annual WUE in China's vegetated areas has significantly increased at a linear rate of 0.01/gC kg(-1) H2O a(-1) (P < 0.05). (2) The spatial patterns of average annual WUE in China's vegetated areas had large spatial variability. Higher average annual WUE values were found in the basins with high forest or cropland coverage and within humid climatic zones. Lower average annual WUE values were found in the basins with high grassland coverage and within arid and semi-arid climate zones. In total, 40.59% of the WUE in China's vegetated areas significantly increased (P < 0.05). They were mainly distributed in Northern China. (3) From 2000 to 2014, WUE values in 32.79%, 7.21%, 23.33%, and 8.57% of the China's vegetated areas were highly sensitive to drought in the growing season, spring, summer, and autumn, respectively. (4) The growing season, summer, and autumn had significantly higher correlations (P < 0.05) over the Standardized Precipitation and Evapotranspiration Index-24 time scale than those over the other time scales. (5) During the growing season, WUE values in river basins with a humid climate and forest coverage were more sensitive to drought than to other river basins.
WOS关键词	LOESS PLATEAU ; VEGETATION ACTIVITY ; TIME-SCALES ; VARIABILITY ; CARBON ; PRECIPITATION ; IMPROVEMENTS ; PRODUCTIVITY ; ECOSYSTEMS ; CLIMATE
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000521505600039
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133646]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhao, Anzhou
作者单位	1.Shenzhen Univ, Shenzhen Key Lab Spatial Smart Sensing & Serv, Shenzhen 518060, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 3.Hebei Univ Engn, Coll Min & Geomat, Handan 056038, Peoples R China 4.Shenzhen Univ, MNR Key Lab Geoenvironm Monitoring Great Bay Area, Shenzhen 518060, Peoples R China 5.Shenzhen Univ, Guangdong Key Lab Urban Informat, Shenzhen 518060, Peoples R China 6.Shenzhen Univ, Res Inst Smart Cities, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Anzhou,Zhang, Anbing,Cao, Sen,et al. Spatiotemporal patterns of water use efficiency in China and responses to multi-scale drought[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2020,140(1-2):559-570.
APA	Zhao, Anzhou,Zhang, Anbing,Cao, Sen,Feng, Lili,&Pei, Tao.(2020).Spatiotemporal patterns of water use efficiency in China and responses to multi-scale drought.THEORETICAL AND APPLIED CLIMATOLOGY,140(1-2),559-570.
MLA	Zhao, Anzhou,et al."Spatiotemporal patterns of water use efficiency in China and responses to multi-scale drought".THEORETICAL AND APPLIED CLIMATOLOGY 140.1-2(2020):559-570.