气候变化领域集成服务门户(CCPortal): Methodological comparison of alpine meadow evapotranspiration on the Tibetan Plateau, China

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DOI	10.1371/journal.pone.0189059
	Methodological comparison of alpine meadow evapotranspiration on the Tibetan Plateau, China
	Chang, Yaping; Wang, Jie; Qin, Dahe; Ding, Yongjian; Zhao, Qiudong; Liu, Fengjing; Zhang, Shigiang
发表日期	2017
ISSN	1932-6203
卷号	12 期号:12
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.
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
来源期刊	PLOS ONE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158533
作者单位	Ding, YJ (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Gansu, Peoples R China.; Ding, YJ (corresponding author), Univ Chinese Acad Sci, Beijing, Peoples R China.; Ding, YJ (corresponding author), Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou, Gansu, Peoples R China.; Zhang, SG (corresponding author), Northwest Univ, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian, Shaanxi, Peoples R China.; Zhang, SG (corresponding author), 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],2017,12(12).
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).
MLA	Chang, Yaping,et al."Methodological comparison of alpine meadow evapotranspiration on the Tibetan Plateau, China".PLOS ONE 12.12(2017).