Spatiotemporal variations in the ratio of transpiration to evapotranspiration and its controlling factors across terrestrial biomes
文献类型：期刊论文
| 作者 | Cao, Ruochen3,4; Huang, Hui5; Wu, Genan6,7; Han, Daorui3; Jiang, Zhiyun3,8; Di, Kai3; Hu, Zhongmin1,2,3 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022-06-15 |
| 卷号 | 321页码:11 |
| 关键词 | Evapotranspiration partitioning Controlling factors Spatiotemporal variation Model comparison |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2022.108984 |
| 通讯作者 | Hu, Zhongmin(huzm@igsnrr.ac.cn) |
| 英文摘要 | Quantifying the ratio of transpiration (T) to evapotranspiration (ET), T/ET, is crucial for understanding and predicting the water cycle and energy balance between the land and atmosphere. Here, we used three well-validated ET partitioning models to estimate T/ET at global fluxnet sites. The models are the Shuttleworth-Wallace-Hu (SWH) model, the Priestley-Taylor Jet Propulsion Lab (PT-JPL) model, and the underlying water use efficiency (uWUE) method. SWH illustrated the most reliable estimate in both the magnitude and the across-site variability of T/ET among three models. Mean annual T/ET derived from SWH, PT-JPL, and uWUE were 0.61 +/- 0.14, 0.52 +/- 0.12 and 0.59 +/- 0.07, respectively. Leaf area index (LAI) was the key driver of spatial variations in T/ET across sites, as well as seasonal variations in T/ET in ecosystems in most climatic zones except for the tropical and arid regions. However, there were discrepancies in factors controlling inter-annual variations in T/ET among the models. SWH and PT-JPL showed that the inter-annual variation in T/ET was more related to LAI than climatic factors but an opposite result was found by uWUE due to the simple structure and less forcing data of uWUE. The findings of our research highlight the importance of capturing the controls of LAI on ET partitioning for predicting future water cycle with land models. We appeal for direct measurements of ET components at the flux tower sites for validating the models and reduce model uncertainties. |
| WOS关键词 | WATER-USE EFFICIENCY ; VEGETATION CONTROL ; 2-SOURCE MODEL ; EVAPORATION ; ECOSYSTEMS ; FLUX |
| 资助项目 | National Natural Science Foundation of China[31922053] ; National Key R&D Program of China[2017YFA0604801] ; Talent Project of Hainan Uni-versity (KYQD)[KYQD (ZR) 21096] ; Talent Project of Hainan University[KYQD (ZR) 21096] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000806491800002 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; Talent Project of Hainan Uni-versity (KYQD) ; Talent Project of Hainan University |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/179068]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Hu, Zhongmin |
| 作者单位 | 1.southern Marine Sci & Engn Guangdong Lab, Zhuhai 519082, Peoples R China 2.Hainan Univ, Coll Ecol & Environm, Haikou 570228, Peoples R China 3.South China Normal Univ, Sch Geog, Shipai Campus, Guangzhou 510631, Peoples R China 4.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Peoples R China 5.Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat State Forestry Ad, Beijing, Peoples R China 6.Acad Mil Med Sci, Ctr Assessment & Demonstrat Res, Beijing 100091, Peoples R China 7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Synth Res Ctr Chinese Ecosyst Res Network, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 8.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Ruochen,Huang, Hui,Wu, Genan,et al. Spatiotemporal variations in the ratio of transpiration to evapotranspiration and its controlling factors across terrestrial biomes[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,321:11. |
| APA | Cao, Ruochen.,Huang, Hui.,Wu, Genan.,Han, Daorui.,Jiang, Zhiyun.,...&Hu, Zhongmin.(2022).Spatiotemporal variations in the ratio of transpiration to evapotranspiration and its controlling factors across terrestrial biomes.AGRICULTURAL AND FOREST METEOROLOGY,321,11. |
| MLA | Cao, Ruochen,et al."Spatiotemporal variations in the ratio of transpiration to evapotranspiration and its controlling factors across terrestrial biomes".AGRICULTURAL AND FOREST METEOROLOGY 321(2022):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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