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| DOI | 10.1029/2023EF003781 |
| Responses of Ecosystem Productivity to Anthropogenic Ozone and Aerosols at the 2060 | |
| 发表日期 | 2024 |
| EISSN | 2328-4277 |
| 起始页码 | 12 |
| 结束页码 | 1 |
| 卷号 | 12期号:1 |
| 英文摘要 | Terrestrial ecosystems help mitigate global warming by sequestering atmospheric carbon dioxide (CO2) through plant photosynthesis, the rate of which is affected by surface ozone (O3) and aerosols under simultaneous impacts of climate change and rising CO2. While the changes in anthropogenic emissions perturb atmospheric components, their consequent impacts on ecosystem productivity in the future climate remain unclear. Here, we apply a fully coupled climate-chemistry-vegetation model, ModelE2-YIBs, to explore the effects of O3 and aerosols from anthropogenic emissions on global gross primary productivity (GPP) under different emission scenarios at 2060. At the present day, anthropogenic air pollutants induce a GPP loss of -1.67 Pg[C] (-4%) in boreal summer with the contributions of -2.18 Pg[C] by O3 and +0.52 Pg[C] by aerosols. At 2060, the detrimental effect of air pollutants on GPP is exacerbated to -1.85 Pg[C] under a high emissions scenario but alleviated to -0.59 Pg[C] under a low emission scenario. The mitigated GPP loss in the latter scenario is owing to the effective control of anthropogenic emissions that on average reduces surface O3 concentrations by 8.14 ppbv globally relative to 2010. Although the CO2 fertilization effect is weaker in the low emission scenario, the strong decline in air pollutants brings additional GPP gains compared to the high scenario. Regionally, such GPP amelioration is close to or even overweighs the CO2 fertilization effect in eastern China and United States, suggesting that the deep cut of anthropogenic emissions can effectively promote future ecosystem productivity over the nowadays polluted regions. Terrestrial ecosystems play a crucial role in reducing global warming through plant photosynthesis. However, this process is sensitive to the changes in environmental factors such as climate, CO2, and air pollutants. Here, we use a climate-chemistry-vegetation coupled model to project global ecosystem productivity by the 2060, taking into account impacts of surface ozone and aerosols under simultaneous impacts of climate change and rising CO2. We found that air pollutants result in a 4% loss of global plant productivity during the boreal summer mainly due to the detrimental effects of ozone. By the year 2060, this negative effect could worsen under a high emission scenario but improve under a low emission scenario. The better outcome in the low emission scenario is largely due to a significant reduction in ozone levels, which results from effective control of human-caused emissions. Regionally, the pollution-induced improvement in plant productivity shows the highest gains in eastern China and the United States. It suggests that the deep cut of human emissions helps increase ecosystem carbon uptake in the top two carbon emitter countries even with weakened CO2 fertilization effects under the carbon neutrality. Anthropogenic ozone and aerosols reduce summertime GPP by 4% at present dayThis GPP loss can be significantly decreased with the deep cut of anthropogenic emissionsThe GPP recovery by air pollution control is comparable to CO2 fertilization in China and United States |
| 英文关键词 | anthropogenic emissions; gross primary productivity; ozone damage; diffuse fertilization effect; ModelE2-YIBs |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001137013200001 |
| 来源期刊 | EARTHS FUTURE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/290634 |
| 作者单位 | Nanjing University of Information Science & Technology |
| 推荐引用方式 GB/T 7714 | . Responses of Ecosystem Productivity to Anthropogenic Ozone and Aerosols at the 2060[J],2024,12(1). |
| APA | (2024).Responses of Ecosystem Productivity to Anthropogenic Ozone and Aerosols at the 2060.EARTHS FUTURE,12(1). |
| MLA | "Responses of Ecosystem Productivity to Anthropogenic Ozone and Aerosols at the 2060".EARTHS FUTURE 12.1(2024). |
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