Enhanced Primary Production in the Oligotrophic South China Sea Related to Southeast Asian Forest Fires
文献类型：期刊论文
| 作者 | Xiao, Hong-Wei; Luo, Li; Zhu, Ren-Guo; Guo, Wei; Long, Ai-Min; Wu, Jing-Feng; Xiao, Hua-Yun |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2020 |
| 卷号 | 125期号:2页码:e2019JC015663 |
| ISSN号 | 2169-9275 |
| 英文摘要 | Atmospheric reactive nitrogen deposition is an important process in the nitrogen cycle of natural ecosystems, especially in oligotrophic oceans. Increased land-based atmospheric nitrogen deposition over the ocean changes the stoichiometric balance of marine ecosystems; this causes changes in ecosystem functions and biogeochemical cycles. Current studies have shown that atmospheric reactive nitrogen is mainly derived from land-based human activities, such as the use of fertilizers, combustion of fossil fuels, and forest fires. Forest fires can provide a vast amount of reactive nitrogen and other nutrients over short time scales and may greatly influence marine ecosystems. Here, we document a large change in nitrogen concentration and primary productivity in upper levels of the South China Sea (SCS), coincident with Indonesian forest fires between August and September of 2012. Using back trajectories, fire spot maps, geographical distributions of the smoke, vertical distributions of the depolarization ratio, and nitrogen isotope values of nitrate in rainwater, we found that the change in nitrogen could be attributed to the forest fires. Our results show that the SCS received about 180 Gg of N as wet deposition during the sampling period. This atmospheric nitrogen deposition caused high primary productivity (40.679 +/- 15.852 mg C.m(-2).hr(-1)) in the upper levels of the SCS, which tripled values recorded in other years. This suggests that high nitrogen levels as well as other nutrients derived from tropical Asian forest fires are of great importance to the marine ecosystem of the SCS and also likely affect global marine biogeochemical cycles. Plain Language Summary Atmospheric nitrogen deposition can stimulate primary productivity in nitrogen-limited marine ecosystems. Tropical forest fires can provide a vast amount of reactive nitrogen and other nutrients over short time scales and may greatly influence marine ecosystems. We document a large change in nitrogen concentration and primary productivity in upper levels of the South China Sea, in which reactive nitrogen was mainly derived from Indonesian forest fires in summer 2012. This suggests that high nitrogen levels as well as other nutrients derived from tropical forest fires are of great importance to the global marine ecosystem. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18347]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China 2.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai, Peoples R China 3.[Xiao, Hong-Wei 4.Luo, Li 5.Zhu, Ren-Guo 6.Guo, Wei 7.East China Univ Technol, Jiangxi Prov Key Lab Causes & Control Atmospher P, Nanchang, Jiangxi, Peoples R China 8.[Xiao, Hong-Wei 9.Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, 4600 Rickenbacker Causeway, Miami, FL 33149 USA 10.Univ Chinese Acad Sci, Sch Earth Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Hong-Wei,Luo, Li,Zhu, Ren-Guo,et al. Enhanced Primary Production in the Oligotrophic South China Sea Related to Southeast Asian Forest Fires[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(2):e2019JC015663. |
| APA | Xiao, Hong-Wei.,Luo, Li.,Zhu, Ren-Guo.,Guo, Wei.,Long, Ai-Min.,...&Xiao, Hua-Yun.(2020).Enhanced Primary Production in the Oligotrophic South China Sea Related to Southeast Asian Forest Fires.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(2),e2019JC015663. |
| MLA | Xiao, Hong-Wei,et al."Enhanced Primary Production in the Oligotrophic South China Sea Related to Southeast Asian Forest Fires".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.2(2020):e2019JC015663. |
入库方式： OAI收割
来源：南海海洋研究所
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