| Exploring the influence of environmental factors in partitioning evapotranspiration along an elevation gradient on Mount Gongga, eastern edge of the Qinghai-Tibet Platea, China | |
Sun Ju-ying1,2; Sun Xiang-yang1 ; Hu Zhao-yong1; Wang Gen-xu1
| |
| Corresponding Author | Sun, Xiang-yang(sunxiangyang@imde.ac.cn) ; Wang, Gen-xu(wanggx@imde.ac.cn) |
| 2020 | |
| Source Publication | JOURNAL OF MOUNTAIN SCIENCE
 |
| ISSN | 1672-6316 |
| EISSN | 1993-0321 |
| Volume | 17Issue:2Pages:384-396 |
| Subtype | Article |
| Contribution Rank | 1 |
| Abstract | Evapotranspiration (ET) is a crucial part of the global hydrological cycle, and quantifying ET components is significant for understanding the global water cycle and energy balance. However, there is no consensus on the value of ET components, especially in topographic abrupt change zone, such as eastern margin of the Qinghai-Tibet Platea, where values of ET changes along the altitudinal gradients. Our aim is to explore the influencing factors in partitioning evapotranspiration and how ET components change with increasing elevations. A novel approach was proposed to estimate ET components by adding net solar radiation (Rn) instead of the vapor pressure deficit (VPD) into the underlying water use efficiency (uWUE) model based on one-year continuous measurements of flux data along the elevation gradient on Mount Gongga. Correlation analysis shows that the uWUE model's performance can be improved significantly by considering Rn instead of VPD, with correlation coefficients increasing by 35%-64%. The ratios of transpiration (T) to ET (T/ET) were 0.47, 0.48, 0.50 and 0.35 for the deciduous broadleaf forest (BF), mixed coniferous and deciduous broadleaf forest (MF), evergreen needle forest (ENF) and shrub land (SL), respectively. Leaf area index (LAI) and air temperature (Ta) were the two main controlling factors in determining T/ET during the growing season and at an annual scale, while Rn and Ta played more important roles during the dormant season. This study highlights the importance of incorporating Rn in partitioning evapotranspiration by using the water use efficiency (WUE) method in a humid mountainous region, which can improve the estimation of T/ET on a global scale. |
| Keyword | Eddy covariance Water use efficiency Radiation Evapotranspiration components |
| DOI | 10.1007/s11629-019-5687-1 |
| Indexed By | SCI |
| WOS Keyword | WATER-USE EFFICIENCY ; GROSS PRIMARY PRODUCTION ; TEMPORAL PATTERNS ; EDDY COVARIANCE ; STABLE-ISOTOPE ; ECOSYSTEM CO2 ; SAP-FLOW ; TRANSPIRATION ; FLUXES ; COMPONENTS |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[41401044] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-DQC006] |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS Subject | Environmental Sciences |
| WOS ID | WOS:000512107000010 |
| Funding Organization | National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/33871 |
| Collection | 山地表生过程与生态调控重点实验室 |
| Corresponding Author | Sun Xiang-yang; Wang Gen-xu |
| Affiliation | 1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 2.University of Chinese Academy of Sciences, Beijing 100049, China |
| First Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Corresponding Author Affilication | 中国科学院水利部成都山地灾害与环境研究所 |
| Recommended Citation GB/T 7714 | Sun Ju-ying,Sun Xiang-yang,Hu Zhao-yong,et al. Exploring the influence of environmental factors in partitioning evapotranspiration along an elevation gradient on Mount Gongga, eastern edge of the Qinghai-Tibet Platea, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(2):384-396. |
| APA | Sun Ju-ying,Sun Xiang-yang,Hu Zhao-yong,&Wang Gen-xu.(2020).Exploring the influence of environmental factors in partitioning evapotranspiration along an elevation gradient on Mount Gongga, eastern edge of the Qinghai-Tibet Platea, China.JOURNAL OF MOUNTAIN SCIENCE,17(2),384-396. |
| MLA | Sun Ju-ying,et al."Exploring the influence of environmental factors in partitioning evapotranspiration along an elevation gradient on Mount Gongga, eastern edge of the Qinghai-Tibet Platea, China".JOURNAL OF MOUNTAIN SCIENCE 17.2(2020):384-396. |
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| Sun2020_Article_Expl（1403KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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