Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15224 |
Accelerated terrestrial ecosystem carbon turnover and its drivers | |
Donghai Wu; Shilong Piao; Dan Zhu; Xuhui Wang; Philippe Ciais; Ana Bastos; Xiangtao Xu; Wenfang Xu | |
2020-07-07 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | The terrestrial carbon cycle has been strongly influenced by human‐induced CO2 increase, climate change, and land use change since the industrial revolution. These changes alter the carbon balance of ecosystems through changes in vegetation productivity and ecosystem carbon turnover time (τ eco). Even though numerous studies have drawn an increasingly clear picture of global vegetation productivity changes, global changes in τ eco are still unknown. In this study, we analyzed the changes of τ eco between the 1860s and the 2000s and their drivers, based on theory of dynamic carbon cycle in non‐steady state and process‐based ecosystem model. Results indicate that τ eco has been reduced (i.e., carbon turnover has accelerated) by 13.5% from the 1860s (74 years) to the 2000s (64 years), with reductions of 1 year of carbon residence times in vegetation (r veg) and of 9 years in soil (r soil). Additionally, the acceleration of τ eco was examined at biome scale and grid scale. Among different driving processes, land use change and climate change were found to be the major drivers of turnover acceleration. These findings imply that carbon fixed by plant photosynthesis is being lost from ecosystems to the atmosphere more quickly over time, with important implications for the climate‐carbon cycle feedbacks. |
领域 | 气候变化 ; 资源环境 |
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/282678 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Donghai Wu,Shilong Piao,Dan Zhu,et al. Accelerated terrestrial ecosystem carbon turnover and its drivers[J]. Global Change Biology,2020. |
APA | Donghai Wu.,Shilong Piao.,Dan Zhu.,Xuhui Wang.,Philippe Ciais.,...&Wenfang Xu.(2020).Accelerated terrestrial ecosystem carbon turnover and its drivers.Global Change Biology. |
MLA | Donghai Wu,et al."Accelerated terrestrial ecosystem carbon turnover and its drivers".Global Change Biology (2020). |
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