Minor carbon sequestration under nitrogen deposition due to downregulated nitrogen uptake and use efficiency
文献类型：期刊论文
| 作者 | Wang, Song4; Zhang, Ruiyang; Huang, Yuanyuan; Luo, Yiqi3; Chen, Weinan3; Zhang, Yahai2; Wang, Jinsong; Niu, Shuli4 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2024-11-15 |
| 卷号 | 358页码:110220 |
| 关键词 | Ecosystem adjustment Nitrogen deposition Data assimilation Photosynthetic nitrogen use efficiency Nitrogen uptake rate |
| DOI | 10.1016/j.agrformet.2024.110220 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Global nitrogen (N) deposition substantially enhances ecosystem carbon cycling but usually results in minor carbon sequestration. The mechanisms underlying the minor stimulation of N deposition on carbon sequestration are not fully understood. Here, we used 22 sets of observations from a gradient N addition experiment with rates at 0, 2, 4, 8, 16, to 32 g Nm(-2)year(-1) in an alpine meadow ecosystem to constrain parameterization of the process-oriented Grassland ECOsystem (GECO) model. Our results indicate that the parameters related to plant N uptake and photosynthetic N use efficiency are proportionally downregulated with the rate of N addition. This is, the higher the rate of N addition, the larger the downward adjustment is in plant N uptake and use efficiency. GECO with parameter values not being adjusted to N treatments simulated higher annual GPP by 16.7 +/- 7.1 %, 20.7 +/- 6.7 %, 25.2 +/- 8.2 %, 23.1 +/- 7.0 %, and 49.5 +/- 9.1 % under addition rates of 2, 4, 8, 16, and 32 g Nm(-2)year(-1), respectively, in comparison to these with parameter adjustment. Similarly, the ecosystem C storage simulated by GECO model without parameter adjustment was higher by 4.4 +/- 2.5 % to 12.0 +/- 3.0 % under these with parameter adjustment. Without adjustment of ecosystem physiological processes, such as the plant N uptake rate and use efficiency, Earth system models (ESMs) generally overestimate C uptake and storage under N deposition. Therefore, it is essential to incorporate these adjustments into ESMs to realistically predict global C dynamics under future N enrichment and its feedback to climate change. |
| WOS关键词 | NUTRIENT LIMITATION ; MODEL ; PATTERNS ; LAND ; PHOTOSYNTHESIS ; RESPONSES ; TRANSPIRATION ; UNCERTAINTIES ; CONDUCTANCE ; ADAPTATION |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001318000200001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/207911]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 2.Cornell Univ, Sch Integrat Plant Sci, Ithaca, NY 14850 USA 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Song,Zhang, Ruiyang,Huang, Yuanyuan,et al. Minor carbon sequestration under nitrogen deposition due to downregulated nitrogen uptake and use efficiency[J]. AGRICULTURAL AND FOREST METEOROLOGY,2024,358:110220. |
| APA | Wang, Song.,Zhang, Ruiyang.,Huang, Yuanyuan.,Luo, Yiqi.,Chen, Weinan.,...&Niu, Shuli.(2024).Minor carbon sequestration under nitrogen deposition due to downregulated nitrogen uptake and use efficiency.AGRICULTURAL AND FOREST METEOROLOGY,358,110220. |
| MLA | Wang, Song,et al."Minor carbon sequestration under nitrogen deposition due to downregulated nitrogen uptake and use efficiency".AGRICULTURAL AND FOREST METEOROLOGY 358(2024):110220. |
入库方式： OAI收割
来源：地理科学与资源研究所
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