Climate Change Will Reduce the Carbon Use Efficiency of Terrestrial Ecosystems on the Qinghai-Tibet Plateau: An Analysis Based on Multiple Models
文献类型：期刊论文
| 作者 | Wang, Yue; Hu, Jinming; Yang, Yanzheng ; Li, Ruonan; Peng, Changhui; Zheng, Hua
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| 刊名 | FORESTS
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| 出版日期 | 2021-01 |
| 卷号 | 12期号:1页码:- |
| 关键词 | carbon use efficiency (CUE) gross primary production (GPP) climate change Qinghai-Tibet Plateau CMIP6 model-averaging |
| 英文摘要 | The carbon use efficiency (CUE) of ecosystems, expressed as the ratio of net primary production (NPP) and gross primary production (GPP), is extremely sensitive to climate change and has a great effect on the carbon cycles of terrestrial ecosystems. Climate change leads to changes in vegetation, resulting in different CUE values, especially on the Qinghai-Tibet Plateau, one of the most climate-sensitive regions in the world. However, the change trend and the intrinsic mechanism of climate effects on CUE in the future climate change scenario are not clear in this region. Based on the scheme of the coupled model intercomparison project (CMIP6), we analyze the simulation results of the five models of the scenario model intercomparison project (ScenarioMIP) under three different typical future climate scenarios, including SSP1-2.6, SSP3-7.0 and SSP5-8.5, on the Qinghai-Tibet Plateau in 2015-2100 with methods of model-averaging to average the long-term forecast of the five several well-known forecast models for three alternative climate scenarios with three radiative forcing levels to discuss the CUE changes and a structural equations modeling (SEM) approach to examine how the trends in GPP, NPP, and CUE related to different climate factors. The results show that (1) GPP and NPP demonstrated an upward trend in a long time series of 86 years, and the upward trend became increasingly substantial with the increase in radiation forcing; (2) the ecosystem CUE of the Qinghai-Tibet Plateau will decrease in the long time series in the future, and it shows a substantial decreasing trend with the increase in radiation forcing; and (3) the dominant climate factor affecting CUE is temperature of the factors included in these models, which affects CUE mainly through GPP and NPP to produce indirect effects. Temperature has a higher comprehensive effect on CUE than precipitation and CO2, which are negative effects on CUE on an annual scale. Our finding that the CUE decreases in the future suggests that we must pay more attention to the vegetation and CUE changes, which will produce great effects on the regional carbon dynamics and balance. |
| WOS研究方向 | Forestry |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45433]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming 650500, Yunnan, Peoples R China 2.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China 3.Univ Quebec Montreal, Dept Biol Sci, Inst Environm Sci, Montreal, PQ H2L 2C4, Canada |
| 推荐引用方式 GB/T 7714 | Wang, Yue,Hu, Jinming,Yang, Yanzheng,et al. Climate Change Will Reduce the Carbon Use Efficiency of Terrestrial Ecosystems on the Qinghai-Tibet Plateau: An Analysis Based on Multiple Models[J]. FORESTS,2021,12(1):-. |
| APA | Wang, Yue,Hu, Jinming,Yang, Yanzheng,Li, Ruonan,Peng, Changhui,&Zheng, Hua.(2021).Climate Change Will Reduce the Carbon Use Efficiency of Terrestrial Ecosystems on the Qinghai-Tibet Plateau: An Analysis Based on Multiple Models.FORESTS,12(1),-. |
| MLA | Wang, Yue,et al."Climate Change Will Reduce the Carbon Use Efficiency of Terrestrial Ecosystems on the Qinghai-Tibet Plateau: An Analysis Based on Multiple Models".FORESTS 12.1(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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