Regional drought-induced reduction in the biomass carbon sink of Canada's boreal forests
文献类型：SCI/SSCI论文
| 作者 | Ma Z. H. ; Peng C. H. ; Zhu Q. A. ; Chen H. ; Yu G. R. ; Li W. Z. ; Zhou X. L. ; Wang W. F. ; Zhang W. H. |
| 发表日期 | 2012 |
| 关键词 | global warming forest aboveground biomass drought index northern hemisphere carbon uptake positive feedback tree mortality climate-change atmospheric circulation prairie ecosystems northern increase balance trends fire |
| 英文摘要 | The boreal forests, identified as a critical "tipping element" of the Earth's climate system, play a critical role in the global carbon budget. Recent findings have suggested that terrestrial carbon sinks in northern high-latitude regions are weakening, but there has been little observational evidence to support the idea of a reduction of carbon sinks in northern terrestrial ecosystems. Here, we estimated changes in the biomass carbon sink of natural stands throughout Canada's boreal forests using data from long-term forest permanent sampling plots. We found that in recent decades, the rate of biomass change decreased significantly in western Canada (Alberta, Saskatchewan, and Manitoba), but there was no significant trend for eastern Canada (Ontario and Quebec). Our results revealed that recent climate change, and especially drought-induced water stress, is the dominant cause of the observed reduction in the biomass carbon sink, suggesting that western Canada's boreal forests may become net carbon sources if the climate change-induced droughts continue to intensify. |
| 出处 | Proceedings of the National Academy of Sciences of the United States of America |
| 卷 | 109 |
| 期 | 7 |
| 页 | 2423-2427 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0027-8424 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/26835]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Ma Z. H.,Peng C. H.,Zhu Q. A.,et al. Regional drought-induced reduction in the biomass carbon sink of Canada's boreal forests. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
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