Uncertainty and dynamics of natural wetland CH4 release in China: Research status and priorities
文献类型：期刊论文
| 作者 | Wei, Da ; Wang, Xiaodan
|
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 154页码:95-105 |
| 关键词 | Methane (CH4) Natural wetland Climate change Land use change China |
| ISSN号 | 1352-2310 |
| 通讯作者 | Xiaodan Wang |
| 英文摘要 | Natural wetlands represent the largest single source of methane (CH4), a potent greenhouse gas. China is home to the world's fourth largest wetland area, and it is facing intense climate- and human-related impacts. The scientific community in China has invested considerable effort into investigating wetland CH4 release and its dynamics. Static chamber and eddy covariance observations have verified the temperature, water regime and air pressure as factors that regulate the diurnal and seasonal variation of CH4 release. Non-growing seasons, especially freezing thawing cycles, play a role in CH4 release. However, a knowledge gap still exists with respect to the inter-annual variability of CH4 release. Observations also suggest that water and temperature regimes control the micro- and macro-scale spatial pattern of CH4 release, respectively. Recent bookkeeping surveys, biogeochemical model simulations, and chemical transport model inversions, have narrowed the uncertainty range of national CH4 release to 2.46-3.20, 2.77-4.95 and 238-4.91 Tg CH4 yr(-1), respectively. Wetland loss (especially cropland conversion in Northeast China), despite climate changes, decreased CH4 release by 45.2%-52.2% from the 1950s-2000s, and by 13.2%-15.4% from the 1980s-2000s. However, future warmer temperatures and rising CO2 are predicted to strengthen national CH4 release by 32% (RCP2.6), 55% (RCP4.5) and 91% (RCP8.5) by the 2080s, albeit without the variation in wetland extent having been considered. Furthermore, future research should emphasize the mechanisms involved in CH4 release during freezing thawing cycles and interannual variability. Model data fusion of eddy covariance and manipulative experiments, especially warming and CO2 enrichment, would benefit estimations and projections of CH4 release. (C) 2017 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 关键词[WOS] | FRESH-WATER MARSHES ; QINGHAI-TIBETAN PLATEAU ; AIR CO2 ENRICHMENT ; METHANE EMISSIONS ; NORTHEAST CHINA ; ATMOSPHERIC METHANE ; ECOSYSTEM RESPIRATION ; METHANOGENIC ARCHAEA ; SANJIANG PLAIN ; CARBON-DIOXIDE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000397551800009 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/18618]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Processes & Ecol Regulat, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Da,Wang, Xiaodan. Uncertainty and dynamics of natural wetland CH4 release in China: Research status and priorities[J]. ATMOSPHERIC ENVIRONMENT,2017,154:95-105. |
| APA | Wei, Da,&Wang, Xiaodan.(2017).Uncertainty and dynamics of natural wetland CH4 release in China: Research status and priorities.ATMOSPHERIC ENVIRONMENT,154,95-105. |
| MLA | Wei, Da,et al."Uncertainty and dynamics of natural wetland CH4 release in China: Research status and priorities".ATMOSPHERIC ENVIRONMENT 154(2017):95-105. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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