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Surface conductance for evapotranspiration of tropical forests: Calculations, variations, and controls
Tan, Zheng-Hong1; Zhao, Jun-Fu1; Wang, Guan-Ze1; Chen, Meng-Ping1; Yang, Lian-Yan1; He, Chun-Sheng1; Restrepo-Coupe, Natalia2,3; Peng, Shu-Shi4; Liu, Xue-Yan5; da Rocha, Humberto R.6; Kosugi, Yoshiko7; Hirano, Takashi8; Salesk, Scott R.3; Goulden, Michael L.9; Zeng, Jiye10; Ding, Fang-Jun11; Gao, Fu12; Song, Liang13
Corresponding AuthorTan, Zheng-Hong( ; Song, Liang(
AbstractTropical forests are responsible for the evaporation and transpiration of large quantities of water into the atmosphere annually. Surface conductance (g(s)) is a poorly understood phenomenon that plays a central role in regulating this evapotranspiration. We studied the calculations, variations, and environmental factors controlling g(s) based on eddy flux measurements from 10 tropical forest sites that covered a wide range of water gradients across continents. We found that boundary layer conductance (g(b)) is comparable with aerodynamic conductance for momentum (g(aM)) and thus, it should not be ignored in estimations of total aerodynamic conductance for water vapor (g(aV)). Based on the findings, we have made some recommendations for g(aM) estimation both with and without measurements of turbulence. The seasonal variation of g(s) is low in humid sites but large in sites with a dry season. A value of 24.8 +/- 13.8 mm s(-1) was suggested for maximum surface conductance (g(smax)) for tropical forests. Both water vapor deficit (D) and radiation (Q) play an important role in controlling g(s). The model driven by both D and Q could capture the diurnal variations of g(s) well and could be implemented in large-scale models in future. We believe the findings of this study could contribute substantially to our understanding of tropical forest g(s).
KeywordBoundary layer conductance Penman-Monteith equation Maximum surface conductance Energy imbalance correction Jarvis stomata model
Indexed BySCI
WOS IDWOS:000480376400028
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Document Type期刊论文
Corresponding AuthorTan, Zheng-Hong; Song, Liang
Affiliation1.Hainan Univ, Sch Ecol & Environm, Ecol Program, Haikou, Hainan, Peoples R China
2.Univ Technol Sydney, Plant Funct Biol & Climate Change Cluster, Sydney, NSW, Australia
3.Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ USA
4.Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing, Peoples R China
5.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China
6.Univ Sdo Paulo, Dept Atmospher Sci, Sao Paulo, Brazil
7.Kyoto Univ, Grad Sch Agr, Lab Forest Hydrol, Kyoto, Japan
8.Hokkaido Univ, Res Fac Agr, Sapporo, Hokkaido, Japan
9.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA USA
10.Natl Inst Environm Snyiros, Ibaraki, Japan
11.Guizhou Acad Forestry, Guiyang, Guizhou, Peoples R China
12.Chinese Acad Sci, Kunming Inst Bot, Kunming, Yunnan, Peoples R China
13.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Menglun, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
Tan, Zheng-Hong,Zhao, Jun-Fu,Wang, Guan-Ze,et al. Surface conductance for evapotranspiration of tropical forests: Calculations, variations, and controls[J]. AGRICULTURAL AND FOREST METEOROLOGY,2019,275:317-328.
APA Tan, Zheng-Hong.,Zhao, Jun-Fu.,Wang, Guan-Ze.,Chen, Meng-Ping.,Yang, Lian-Yan.,...&Song, Liang.(2019).Surface conductance for evapotranspiration of tropical forests: Calculations, variations, and controls.AGRICULTURAL AND FOREST METEOROLOGY,275,317-328.
MLA Tan, Zheng-Hong,et al."Surface conductance for evapotranspiration of tropical forests: Calculations, variations, and controls".AGRICULTURAL AND FOREST METEOROLOGY 275(2019):317-328.
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