Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41501212 |
| 利用遥感和模型模拟研究氮沉降对中国陆地生态系统碳收支的影响 | |
| 卢学鹤 | |
| 主持机构 | 南京大学 |
| 开始日期 | 2016 |
| 结束日期 | 2018 |
| 资助经费 | 240000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | The impacts of rapid increasing of nitrogen deposition on global carbon budget have been one of the hot realm of global change studies. China has become a hotspot of global nitrogen deposition, but the effects of nitrogen deposition, along with nitrogen saturation effects, on national terrestrial carbon budget are still unclear. Taking the Chinese terrestrial ecosystem as the study area, this proposal estimates long-term nitrogen deposition by fusing atmosphere NO2 column concentration, simulation results of atmospheric chemistry model and ground emission data. Then meta-analysis and optimizing of model parameters are conducted to promote the performance of nitrogen control on carbon budget in a land surface processes based model IBIS (Integrated BIosphere Simulator). Finally, coupling the estimated nitrogen deposition, the model simulations aim to clarify the processes of typical terrestrial ecosystems carbon budget response to the rising nitrogen deposition and distinguish their differences, assess the impacts of nitrogen deposition and its saturation effects on terrestrial ecosystem carbon budget in China, evaluate the importance of nitrogen deposition for carbon sink capacity of terrestrial ecosystems among multiple global change factors. These findings will be benefit to accurately predict the change of terrestrial ecosystems carbon sink in China under the background of global change. |
| 中文关键词 | 碳收支 ; 氮沉降 ; IBIS模型 ; NO2柱浓度 |
| 来源机构 | 南京大学 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346968 |
| 推荐引用方式 GB/T 7714 | 卢学鹤.利用遥感和模型模拟研究氮沉降对中国陆地生态系统碳收支的影响.2016. |
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