Analysis of the optimal photosynthetic environment for an alpine meadow ecosystem
文献类型：期刊论文
| 作者 | Zhang, Tao5; Wang, Danfeng5; Xu, Mingjie5; Cong, Nan1; Zhao, Guang1; Tang, Yuanyuan5; Zheng, Zhoutao1; Chen, Ning1,4; Zhu, Juntao1,3; Zhang, Yangjian1,2,3 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2023-10-15 |
| 卷号 | 341页码:9 |
| ISSN号 | 0168-1923 |
| 关键词 | Temperature optima Water availability GPP Photosynthesis Grassland Tibetan Plateau |
| DOI | 10.1016/j.agrformet.2023.109651 |
| 通讯作者 | Xu, Mingjie(xumj@syau.edu.cn) ; Zhang, Yangjian(zhangyj@igsnrr.ac.cn) |
| 英文摘要 | The changes in the carbon sink function of sensitive and fragile alpine ecosystems under climate change are widely concerned. Radiation, temperature, and water resources play important roles in regulating carbon assimilation. Therefore, it is important to detect the optimal configuration of environmental factors for the photosynthesis of alpine meadow ecosystems. In this study, based on 10-year flux and corresponding environ-mental observations in a typical alpine meadow ecosystem, the optimal environmental configuration that could realistically occur in the natural world for photosynthesis was detected. The results indicated that the temper-ature and water conditions were the primary limiting factors, as radiation resources are abundant on the Tibetan Plateau. The optimal temperature for photosynthesis (TAopt) was determined to be 11.92 & DEG;C based on the entire observation dataset, with a maximum photosynthetic capacity (GPPmax) of 0.20 mg CO2 m- 2 s- 1. However, the TAopt and the corresponding GPPmax could be elevated when the soil water content (SWC) was abundant. When SWC exceeded 0.26 m3 m- 3, TAopt increased to 13.41 & DEG;C, and the corresponding GPPmax reached as high as 0.30 mg CO2 m- 2 s- 1, which is the maximum the ecosystem could reach. Thus, the optimal environmental config-uration for photosynthesis that could realistically occur in the natural world in this alpine meadow was air temperature (TA)=13.41 & DEG;C, SWC=0.28 m3 m- 3, vapor pressure deficit (VPD)=0.61 kPa, net radiation (RN)= 411.53 J m- 2 s- 1. According to this study, it could be inferred that within a reasonable range, higher temper-atures and VPD would benefit photosynthesis in this alpine meadow as long as the soil water supply is sufficient. The climate on the Tibetan Plateau is arid with high VPD and is experiencing warming due to climate change. Consequently, alpine ecosystems situated in relatively humid regions with sufficient soil water resources may exhibit greater potential for carbon sequestration than previously estimated. |
| WOS关键词 | GROSS PRIMARY PRODUCTIVITY ; VAPOR-PRESSURE DEFICIT ; CLIMATE VARIABILITY ; TEMPERATURE OPTIMA ; CARBON FLUXES ; WATER ; IMPACTS ; MODEL ; LEAF ; EVAPOTRANSPIRATION |
| 资助项目 | National Natural Science Foundation of China[32061143037] ; National Natural Science Foundation of China[41725003] ; National Key Research and Development Program of China[2017YFA0604801] ; China Postdoctoral Science Foundation[2021M692230] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001062181800001 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/196805]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Mingjie; Zhang, Yangjian |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China 5.Shenyang Agr Univ, Coll Agron, Shenyang 110866, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Tao,Wang, Danfeng,Xu, Mingjie,et al. Analysis of the optimal photosynthetic environment for an alpine meadow ecosystem[J]. AGRICULTURAL AND FOREST METEOROLOGY,2023,341:9. |
| APA | Zhang, Tao.,Wang, Danfeng.,Xu, Mingjie.,Cong, Nan.,Zhao, Guang.,...&He, Yongtao.(2023).Analysis of the optimal photosynthetic environment for an alpine meadow ecosystem.AGRICULTURAL AND FOREST METEOROLOGY,341,9. |
| MLA | Zhang, Tao,et al."Analysis of the optimal photosynthetic environment for an alpine meadow ecosystem".AGRICULTURAL AND FOREST METEOROLOGY 341(2023):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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