Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1801317115 |
Potential shift from a carbon sink to a source in Amazonian peatlands under a changing climate | |
Wang, Sirui1,2; Zhuang, Qianlai1,2; Lahteenoja, Outi3; Draper, Frederick C.4,5; Cadillo-Quiroz, Hinsby3 | |
2018-12-04 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2018 |
卷号 | 115期号:49页码:12407-12412 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Amazonian peatlands store a large amount of soil organic carbon (SOC), and its fate under a future changing climate is unknown. Here, we use a process-based peatland biogeochemistry model to quantify the carbon accumulation for peatland and nonpeatland ecosystems in the Pastaza-Maranon foreland basin (PMFB) in the Peruvian Amazon from 12,000 y before present to AD 2100. Model simulations indicate that warming accelerates peat SOC loss, while increasing precipitation accelerates peat SOC accumulation at millennial time scales. The uncertain parameters and spatial variation of climate are significant sources of uncertainty to modeled peat carbon accumulation. Under warmer and presumably wetter conditions over the 21st century, SOC accumulation rate in the PMFB slows down to 7.9 (4.3-12.2) g.C.m(-2).y(-1) from the current rate of 16.1 (9.1-23.7) g.C.m(-2).y(-1), and the region may turn into a carbon source to the atmosphere at -53.3 (-66.8 to -41.2) g.C.m(-2).y(-1) (negative indicates source), depending on the level of warming. Peatland ecosystems show a higher vulnerability than nonpeatland ecosystems, as indicated by the ratio of their soil carbon density changes (ranging from 3.9 to 5.8). This is primarily due to larger peatlands carbon stocks and more dramatic responses of their aerobic and anaerobic decompositions in comparison with nonpeatland ecosystems under future climate conditions. Peatland and nonpeatland soils in the PMFB may lose up to 0.4 (0.32-0.52) Pg.C by AD 2100 with the largest loss from palm swamp. The carbon-dense Amazonian peatland may switch from a current carbon sink into a source in the 21st century. |
英文关键词 | peatland modeling climate carbon simulation |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452124700038 |
WOS关键词 | FORELAND BASIN ; MODEL ; STORAGE ; PEAT ; SOIL ; ACCUMULATION ; PROJECTIONS ; DYNAMICS ; WETLAND ; DECOMPOSITION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205024 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; 2.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA; 3.Arizona State Univ, Sch Life Sci, Tempe, AZ 85281 USA; 4.Carnegie Inst Sci, Dept Global Ecol, Stanford, CA 94305 USA; 5.Florida Int Univ, Int Ctr Trop Bot, Miami, FL 33199 USA |
推荐引用方式 GB/T 7714 | Wang, Sirui,Zhuang, Qianlai,Lahteenoja, Outi,et al. Potential shift from a carbon sink to a source in Amazonian peatlands under a changing climate[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(49):12407-12412. |
APA | Wang, Sirui,Zhuang, Qianlai,Lahteenoja, Outi,Draper, Frederick C.,&Cadillo-Quiroz, Hinsby.(2018).Potential shift from a carbon sink to a source in Amazonian peatlands under a changing climate.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(49),12407-12412. |
MLA | Wang, Sirui,et al."Potential shift from a carbon sink to a source in Amazonian peatlands under a changing climate".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.49(2018):12407-12412. |
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