气候变化领域集成服务门户(CCPortal): Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016

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DOI	10.1029/2020JD032404
	Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016
	Zhang D.; Liu X.; Zhang L.; Zhang Q.; Gan R.; Li X.
发表日期	2020
ISSN	2169897X
卷号	125 期号:13
英文摘要	This study quantifies the influences of climate variation and vegetation greening on the changes in evapotranspiration (ET) over 110 humid catchments of China from 1982 to 2016. A process-based model considering climate and vegetation changes is employed to estimate ET. The simulated ET compared well with the observed values based on the flux measurements and water balance equation, with the coefficients of determination above 0.62. During the study period, environmental change of the study area was characterized by the increases in air temperature and leaf area index, that is, climate warming and vegetation greening. Annual ET increased at 104 catchments with the trends ranging from 0.01 to 6.2 mm yr−2. The numerical experiment approach and sensitivity method are used to attribute ET changes to climate variation and vegetation greening. The results show that the contributions of climate variation to ET changes estimated by the two methods are 90.6% and 91.3%, respectively, whereas the contributions of vegetation greening to ET changes are only 9.4% and 8.7%, indicating that climate variation controls ET changes in the study area. However, vegetation greening alters the proportions of ET components, which contributes 59.0%–62.0% to the increase in the ratio of transpiration to ET. This study quantifies the roles of climate and vegetation changes in the dynamics of ET, suggesting that more concerns should be paid on the interactions between ecological processes and hydrological cycle in humid regions. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	attribution; climate variation; evapotranspiration; vegetation greening
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185930
作者单位	Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China; Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; Land and Water, CSIRO, Black MountainACT, Australia; School of Life Sciences, University of Technology Sydney, Ultimo, NSW, Australia
推荐引用方式 GB/T 7714	Zhang D.,Liu X.,Zhang L.,et al. Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016[J],2020,125(13).
APA	Zhang D.,Liu X.,Zhang L.,Zhang Q.,Gan R.,&Li X..(2020).Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016.Journal of Geophysical Research: Atmospheres,125(13).
MLA	Zhang D.,et al."Attribution of Evapotranspiration Changes in Humid Regions of China from 1982 to 2016".Journal of Geophysical Research: Atmospheres 125.13(2020).