气候变化领域集成服务门户(CCPortal): Temporal and Spatial Differences and Driving Factors of Evapotranspiration from Terrestrial Ecosystems of the Qinghai Province in the Past 20 Years

CCPortal

DOI	10.3390/w14040536
	Temporal and Spatial Differences and Driving Factors of Evapotranspiration from Terrestrial Ecosystems of the Qinghai Province in the Past 20 Years
	Song, Zhiyuan; Feng, Qi; Gao, Ziyi; Cao, Shengkui; Cao, Guangchao; Wang, Zhigang
通讯作者	Cao, SK (通讯作者)，Qinghai Normal Univ, Sch Geog Sci, Xining 810008, Peoples R China. ; Cao, SK (通讯作者)，Peoples Govt Qinghai Prov, Acad Plateau Sci & Sustainabil, Xining 810016, Peoples R China. ; Cao, SK (通讯作者)，Beijing Normal Univ, Xining 810016, Peoples R China. ; Cao, SK (通讯作者)，Qinghai Normal Univ, Minist Educ, Key Lab Tibetan Plateau Land Surface Proc & Conse, Xining 810008, Peoples R China. ; Cao, SK (通讯作者)，Qinghai Prov Key Lab Phys Geog & Environm Proc, Xining 810008, Peoples R China.
发表日期	2022
EISSN	2073-4441
卷号	14 期号:4
英文摘要	As the Asian Water Tower, understanding the hydrological cycles in Qinghai Province and its interior is critical to the security of terrestrial ecosystems. Based on Moderate Resolution Imaging Spectroradiometer (MODIS)16 evapotranspiration (ET) remote sensing data, we used least squares regression, correlation analysis, and t-test to determine the temporal and spatial changes and trends of ET in Qinghai Province and its five ecological functional regions, located on the Qinghai-Tibet Plateau (Plateau) Western China from 2000 to 2020. In addition, we discussed the main factors affecting the changes of ET in different regions of Qinghai Province over the first two decades of the 21st century along spatial as well as altitudinal gradients. The results showed that: (1) the average annual ET in Qinghai Province was 496.56 mm/a, the highest ET value appeared in the southeast of the study area (684.08 mm/a), and the lowest ET value appeared in the Qaidam region in the northwest (110.49 mm/a); (2) the annual ET showed an increasing trend with a rate of 3.71 mm/a (p < 0.01), the place where ET decreased most was in the Three-River Source region (-8-0 mm/a) in the southwest of the study area, and the ET increased the most in the Hehuang region in the east of the study area (9-34 mm/a); (3) temperature (T) was the dominant ET change factor in Qinghai Province, accounting for about 65.27% of the region, followed by the normalized difference vegetation index (NDVI) and precipitation (P) for 62.52% and 55.41%, respectively; and (4) ET increased significantly by 2.84 mm/100 m with increasing altitude. The dominant factors changed from P to NDVI and T as the altitude increased. The research is of practical value for gaining insight into the regional water cycle process on the Plateau under climate change.
关键词	TIBETAN PLATEAU POTENTIAL EVAPOTRANSPIRATION PRIESTLEY-TAYLOR CLIMATE-CHANGE CHINA TRENDS REGION MODIS RESPONSES BASIN
英文关键词	ET; Qinghai Province; driving factors; elevation-dependency
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000762509400001
来源期刊	WATER
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255046
作者单位	[Song, Zhiyuan; Cao, Shengkui; Wang, Zhigang] Qinghai Normal Univ, Sch Geog Sci, Xining 810008, Peoples R China; [Song, Zhiyuan; Cao, Shengkui; Cao, Guangchao; Wang, Zhigang] Peoples Govt Qinghai Prov, Acad Plateau Sci & Sustainabil, Xining 810016, Peoples R China; [Song, Zhiyuan; Cao, Shengkui; Cao, Guangchao; Wang, Zhigang] Beijing Normal Univ, Xining 810016, Peoples R China; [Song, Zhiyuan; Cao, Shengkui; Cao, Guangchao; Wang, Zhigang] Qinghai Normal Univ, Minist Educ, Key Lab Tibetan Plateau Land Surface Proc & Conse, Xining 810008, Peoples R China; [Song, Zhiyuan; Cao, Shengkui; Cao, Guangchao; Wang, Zhigang] Qinghai Prov Key Lab Phys Geog & Environm Proc, Xining 810008, Peoples R China; [Feng, Qi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730013, Peoples R China; [Gao, Ziyi] Qinghai Natl Univ, Coll Tourism, Xining 810007, Peoples R China
推荐引用方式 GB/T 7714	Song, Zhiyuan,Feng, Qi,Gao, Ziyi,et al. Temporal and Spatial Differences and Driving Factors of Evapotranspiration from Terrestrial Ecosystems of the Qinghai Province in the Past 20 Years[J]. 中国科学院西北生态环境资源研究院,2022,14(4).
APA	Song, Zhiyuan,Feng, Qi,Gao, Ziyi,Cao, Shengkui,Cao, Guangchao,&Wang, Zhigang.(2022).Temporal and Spatial Differences and Driving Factors of Evapotranspiration from Terrestrial Ecosystems of the Qinghai Province in the Past 20 Years.WATER,14(4).
MLA	Song, Zhiyuan,et al."Temporal and Spatial Differences and Driving Factors of Evapotranspiration from Terrestrial Ecosystems of the Qinghai Province in the Past 20 Years".WATER 14.4(2022).