气候变化领域集成服务门户(CCPortal): Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China

CCPortal

DOI	10.3390/rs16010008
	Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China
	Dai, Qin; Chen, Hong; Cui, Chenfeng; Li, Jie; Sun, Jun; Ma, Yuxin; Peng, Xuelian; Wang, Yakun; Hu, Xiaotao
发表日期	2024
EISSN	2072-4292
起始页码	16
结束页码	1
卷号	16 期号:1
英文摘要	As the main expenditure item in water balance, evapotranspiration has an important impact on the surface ecosystem. Assessing the impact of changes in meteorological elements on evapotranspiration is essential to identify the spatiotemporal heterogeneity of hydrographic responses to climate changes. Based on the actual evapotranspiration (ETa) product (GPR-ET) generated by Gaussian process regression (GPR), as well as temperature and precipitation datasets, our study employed various statistical analysis methods, including geographic detector, the center of gravity migration model, spatial variation coefficients, and partial differential models, to investigate the spatiotemporal variation in ETa in China from 2000 to 2018. The analysis covered future trends in ETa changes and the contribution of meteorological factors. Our results showed that the ETa in northwest China had stronger spatial heterogeneity and the mean value was generally lower than that in the southeast. But the center of gravity of ETa was shifting towards the northwest. In most areas, the future trend was expected to be inconsistent with the current stage. ETa in the regions of north and west was mainly driven by precipitation, while its increase in southeast China was largely attributed to temperature. In addition to spatial variations, the joint enhancement effect of temperature and precipitation on ETa exists. According to the contribution analysis, precipitation contributed more to the change in ETa than temperature. These findings have enhanced our comprehension of the contribution of climate variability to ETa changes, providing scientific proof for the optimization apportion of future water resources.
英文关键词	actual evapotranspiration; climate change; geographic detector; contribution rate
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001140519800001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298912
作者单位	Northwest A&F University - China
推荐引用方式 GB/T 7714	Dai, Qin,Chen, Hong,Cui, Chenfeng,et al. Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China[J],2024,16(1).
APA	Dai, Qin.,Chen, Hong.,Cui, Chenfeng.,Li, Jie.,Sun, Jun.,...&Hu, Xiaotao.(2024).Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China.REMOTE SENSING,16(1).
MLA	Dai, Qin,et al."Spatiotemporal Characteristics of Actual Evapotranspiration Changes and Their Climatic Causes in China".REMOTE SENSING 16.1(2024).