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	Methodological comparison of alpine meadow evapotranspiration on the Tibetan Plateau, China
	Chang, Yaping1,2; Wang, Jie3; Qin, Dahe1; Ding, Yongjian1,2,4; Zhao, Qiudong1,4; Liu, Fengjing5; Zhang, Shigiang6,7
刊名	PLOS ONE
	2017-12-13
卷号	12期号:12页码:20
ISSN号	1932-6203
DOI	10.1371/journal.pone.0189059
通讯作者	Ding, Yongjian(dyj@lzb.ac.cn) ; Zhang, Shigiang(zhangsq@lzb.ac.cn)
英文摘要	Estimation of evapotranspiration (ET) for alpine meadow areas in the Tibetan Plateau (TP) is essential for water resource management. However, observation data has been limited due to the extreme climates and complex terrain of this region. To address these issues, four representative methods, Penman-Monteith (PM), Priestley-Taylor (PT), Hargreaves-Samani (HS), and Mahringer (MG) methods, were adopted to estimate ET, which were then compared with ET measured using Eddy Covariance (EC) for five alpine meadow sites during the growing seasons from 2010 to 2014. And each site was measured for one growing season during this period. The results demonstrate that the PT method outperformed at all sites with a coefficient of determination (R-2) ranging from 0.76 to 0.94 and root mean square error (RMSE) ranging from 0.41 to 0.62 mm d(-1). The PM method showed better performance than HS and MG methods, and the HS method produced relatively acceptable results with higher R-2 (0.46) and lower RMSE (0.89 mm d(-1)) compared to MG method with R-2 of 0.16 and RMSE of 1.62 mm d(-1), while MG underestimated ET at all alpine meadow sites. Therefore, the PT method, being the simpler approach and less data dependent, is recommended to estimate ET for alpine meadow areas in the Tibetan Plateau. The PM method produced reliable results when available data were sufficient, and the HS method proved to be a complementary method when variables were insufficient. On the contrary, the MG method always underestimated ET and is, thus, not suitable for alpine meadows. These results provide a basis for estimating ET on the Tibetan Plateau for annual data collection, analysis, and future studies.
收录类别	SCI
WOS关键词	ENERGY-BALANCE CLOSURE ; LAKE SELIN CO ; EDDY-COVARIANCE ; CROP-COEFFICIENTS ; SEMIARID CLIMATE ; WATER-VAPOR ; HEAT-FLUX ; GRASSLAND ; MODEL ; EXCHANGE
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000417884100038
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558048
专题	寒区旱区环境与工程研究所
通讯作者	Ding, Yongjian; Zhang, Shigiang
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Hohai Univ, State Key Lab Hydrol Water Res & Hydraul Engn, Nanjing, Jiangsu, Peoples R China 4.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou, Gansu, Peoples R China 5.Michigan Technol Univ, Sch Forest Resources & Environm Sci, Houghton, MI 49931 USA 6.Northwest Univ, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian, Shaanxi, Peoples R China 7.Northwest Univ, Coll Urban & Environm Sci, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Chang, Yaping,Wang, Jie,Qin, Dahe,et al. Methodological comparison of alpine meadow evapotranspiration on the Tibetan Plateau, China[J]. PLOS ONE,2017,12(12):20.
APA	Chang, Yaping.,Wang, Jie.,Qin, Dahe.,Ding, Yongjian.,Zhao, Qiudong.,...&Zhang, Shigiang.(2017).Methodological comparison of alpine meadow evapotranspiration on the Tibetan Plateau, China.PLOS ONE,12(12),20.
MLA	Chang, Yaping,et al."Methodological comparison of alpine meadow evapotranspiration on the Tibetan Plateau, China".PLOS ONE 12.12(2017):20.

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