QQ客服 官方微博 反馈留言

	Regional drought-induced reduction in the biomass carbon sink of Canada's boreal forests
	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.
	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
内容类型	SCI/SSCI论文
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.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。