Community Composition and Structure Affect Ecosystem and Canopy Water Use Efficiency Across Three Typical Alpine Ecosystems
文献类型：期刊论文
| 作者 | Li, Yuzhe3; Zhang, Xinyuan3,4; Shao, Quanqin3; Fan, Jiangwen3; Chen, Zhi1; Dong, Jinwei3; Hu, Zhongmin5; Zhan, Yue2 |
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2022-01-20 |
| 卷号 | 12页码:14 |
| 关键词 | evapotranspiration partition ecosystem water use efficiency canopy water use efficiency Qinghai-Tibetan Plateau alpine ecosystem community characteristics |
| ISSN号 | 1664-462X |
| DOI | 10.3389/fpls.2021.771424 |
| 通讯作者 | Li, Yuzhe(liyuzhe@igsnrr.ac.cn) ; Shao, Quanqin(Shaoqq@igsnrr.ac.cn) |
| 英文摘要 | Unique ecosystems distributed in alpine areas of the Qinghai-Tibetan Plateau play important roles in climate change mitigation, local food supply, and conservation of species diversity. To understand the water use efficiency (WUE) of this fragile and sensitive region, this study combined observed data from the eddy covariance system and the Shuttleworth-Wallace (S-W) model to measure the continuous mass exchange, including gross primary productivity (GPP), evapotranspiration (ET), and canopy transpiration (T) throughout 2 or 3 years (2016-2018) in three common alpine ecosystems (i.e., alpine steppe, alpine meadow, and alpine swamp). These ecosystems represent a water availability gradient and thus provide the opportunity to quantify environmental and biological controls on WUE at various spatiotemporal scales. We analyzed the ecosystem WUE (WUEe; defined as the ratio of GPP to ET) and canopy WUE (WUEc; defined as the ratio of GPP and canopy T). It was found that the yearly WUEe was 1.40, 1.63, and 2.16 g C kg(-1) H2O, and the yearly WUEc was 8.93, 2.46, and 5.19 g C kg(-1) H2O in the three typical ecosystems, respectively. The controlling factors of yearly WUE diverged between WUEe and WUEc. We found that plant functional group proportion (e.g., gramineous and Cyperaceae) highly explained the yearly WUEe variation across sites, and a good correlation was observed between community species diversity and WUEc. These findings suggest that community composition and trait change are critical in regulating WUEe and WUEc across different alpine ecosystems and that the regulation mechanisms may differ fundamentally between WUEe and WUEc. |
| WOS关键词 | PRECIPITATION-USE EFFICIENCY ; EDDY COVARIANCE ; CLIMATE-CHANGE ; EVAPOTRANSPIRATION COMPONENTS ; CARBON-DIOXIDE ; VAPOR EXCHANGE ; FOREST ; GRASSLANDS ; RESPIRATION ; EVAPORATION |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000750019700001 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/170266]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Yuzhe; Shao, Quanqin |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci, Synth Res Ctr Chinese Ecosyst Res Network, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 2.Nanjing Forestry Univ, Coll Forestry, Nanjing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 4.China Univ Geosci, Sch Earth Sci & Resources, Beijing, Peoples R China 5.South China Normal Univ, Sch Geog, Guangzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuzhe,Zhang, Xinyuan,Shao, Quanqin,et al. Community Composition and Structure Affect Ecosystem and Canopy Water Use Efficiency Across Three Typical Alpine Ecosystems[J]. FRONTIERS IN PLANT SCIENCE,2022,12:14. |
| APA | Li, Yuzhe.,Zhang, Xinyuan.,Shao, Quanqin.,Fan, Jiangwen.,Chen, Zhi.,...&Zhan, Yue.(2022).Community Composition and Structure Affect Ecosystem and Canopy Water Use Efficiency Across Three Typical Alpine Ecosystems.FRONTIERS IN PLANT SCIENCE,12,14. |
| MLA | Li, Yuzhe,et al."Community Composition and Structure Affect Ecosystem and Canopy Water Use Efficiency Across Three Typical Alpine Ecosystems".FRONTIERS IN PLANT SCIENCE 12(2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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