| 论文编号: | |
| 论文题目: | Effects of rising atmospheric CO2, climate change, and nitrogen deposition on aboveground net primary production in a temperate forest |
| 英文论文题目: | Effects of rising atmospheric CO2, climate change, and nitrogen deposition on aboveground net primary production in a temperate forest |
| 第一作者: | 王文娟，马爽 |
| 英文第一作者: | Wen J. Wang, Shuang Ma |
| 联系作者: | 王文娟 |
| 英文联系作者: | Wen J. Wang |
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| 发表年度: | 2019 |
| 卷: | 14 |
| 期: | |
| 页码: | 104005 |
| 摘要: | Temperate forests regrowing from historical land use and land cover change in the eastern U.S. serve as carbon (C) sinks. Environmental drivers have been significantly altered (e.g., rising atmospheric CO2concentration, warmer temperature, and elevated nitrogen (N) deposition) and will have a wide range of impacts on future forest C sinks. However, the interactions among these environmental drivers are unclear and their effects are subject to uncertainty. We assessed the combined and interactive effects of rising CO2concentration, climate change (temperature, precipitation), and N deposition on forest aboveground net primary production (ANPP) and their relative contribution to ANPP changes of a temperate forest in the eastern U.S. We used a process-based ecosystem model PnET-Day to simulate coupled cycles of C, water, and N of forest ecosystems. We found that 1) climate change exerted negative effects on ANPP (-0.250 kg C m-2year-1) whereas rising CO2and N deposition enhanced ANPP (+0.253, +0.014 kg C m-2year-1); 2) climate change interacted with rising CO2and N deposition to decrease ANPP (-0.032, -0.018 kg C m-2year-1); rising CO2and N deposition acted in synergy to increase ANPP (+0.014 kg C m-2year-1); 3) changes in ANPP were mainly attributed to rising CO2and climate change whereas N deposition effects and any two- or three-factor interactive effects were relatively small. Our results suggest that the total negative effect sizes will not be offset by the total positive effect sizes, thus resulting in reductions in forest ANPP over the 21st century. |
| 英文摘要: | Temperate forests regrowing from historical land use and land cover change in the eastern U.S. serve as carbon (C) sinks. Environmental drivers have been significantly altered (e.g., rising atmospheric CO2concentration, warmer temperature, and elevated nitrogen (N) deposition) and will have a wide range of impacts on future forest C sinks. However, the interactions among these environmental drivers are unclear and their effects are subject to uncertainty. We assessed the combined and interactive effects of rising CO2concentration, climate change (temperature, precipitation), and N deposition on forest aboveground net primary production (ANPP) and their relative contribution to ANPP changes of a temperate forest in the eastern U.S. We used a process-based ecosystem model PnET-Day to simulate coupled cycles of C, water, and N of forest ecosystems. We found that 1) climate change exerted negative effects on ANPP (-0.250 kg C m-2year-1) whereas rising CO2and N deposition enhanced ANPP (+0.253, +0.014 kg C m-2year-1); 2) climate change interacted with rising CO2and N deposition to decrease ANPP (-0.032, -0.018 kg C m-2year-1); rising CO2and N deposition acted in synergy to increase ANPP (+0.014 kg C m-2year-1); 3) changes in ANPP were mainly attributed to rising CO2and climate change whereas N deposition effects and any two- or three-factor interactive effects were relatively small. Our results suggest that the total negative effect sizes will not be offset by the total positive effect sizes, thus resulting in reductions in forest ANPP over the 21st century. |
| 刊物名称: | Environmental Research Letters |
| 英文刊物名称: | Environmental Research Letters |
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| 参与作者: | Hong S. He, Zhi H. Liu, Frank R. Thompson III, Wenchi Jin, Zhengfang Wu, Martin A. Spetich, Lei Wang, Song Xue |
| 英文参与作者: | Hong S. He, Zhi H. Liu, Frank R. Thompson III, Wenchi Jin, Zhengfang Wu, Martin A. Spetich, Lei Wang, Song Xue |
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Effects of rising atmospheric CO2, climate change, and nitrogen deposition on aboveground net primar
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