气候变化领域集成服务门户(CCPortal): Post-fire soil carbon emission rates along boreal forest fire chronosequences in northwest Canada show significantly higher emission potentials from permafrost soils compared to non-permafrost soils

CCPortal

DOI	10.3389/fevo.2023.1331018
	Post-fire soil carbon emission rates along boreal forest fire chronosequences in northwest Canada show significantly higher emission potentials from permafrost soils compared to non-permafrost soils
	Koster, Kajar; Aaltonen, Heidi; Koster, Egle; Berninger, Frank; Pumpanen, Jukka
发表日期	2024
ISSN	2296-701X
起始页码	11
卷号	11
英文摘要	Boreal forests are one of the most important biomes storing carbon (C). Wildfires burn yearly on average more than 1% of the boreal forest, and it is expected that the fire return intervals will shorten due to climate change. Fire is one of the most influential factors affecting soil organic matter quantity and quality, soil C pools, and presumably also the time C resides in the soil (soil C turnover time in years). We compared the potential effects of forest fire through post-fire succession on soil carbon dioxide (CO2) emission rates and soil C turnover time in two fire chronosequences, one with underlying permafrost soil and the other without permafrost. We found that fire had a significant effect on potential soil C turnover times, but surprisingly there was no significant difference in soil C turnover times between the permafrost and non-permafrost areas, although the soil CO2 emissions rates in permafrost areas are approximately three times higher compared to non-permafrost areas. In recently burned areas the potential soil C turnover times were two times longer compared to control areas located in forests burned more than 100 years ago. The longest potential soil C turnover times were recorded in mineral soil layers (30 cm) of permafrost soils, and the shortest potential soil C turnover times were recorded in humus layers of non-permafrost areas.
英文关键词	soil carbon turnover; forest fire; boreal forest; permafrost soils; non-permafrost soils
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001142696300001
来源期刊	FRONTIERS IN ECOLOGY AND EVOLUTION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288713
作者单位	University of Eastern Finland; University of Helsinki; University of Eastern Finland; University of Eastern Finland
推荐引用方式 GB/T 7714	Koster, Kajar,Aaltonen, Heidi,Koster, Egle,et al. Post-fire soil carbon emission rates along boreal forest fire chronosequences in northwest Canada show significantly higher emission potentials from permafrost soils compared to non-permafrost soils[J],2024,11.
APA	Koster, Kajar,Aaltonen, Heidi,Koster, Egle,Berninger, Frank,&Pumpanen, Jukka.(2024).Post-fire soil carbon emission rates along boreal forest fire chronosequences in northwest Canada show significantly higher emission potentials from permafrost soils compared to non-permafrost soils.FRONTIERS IN ECOLOGY AND EVOLUTION,11.
MLA	Koster, Kajar,et al."Post-fire soil carbon emission rates along boreal forest fire chronosequences in northwest Canada show significantly higher emission potentials from permafrost soils compared to non-permafrost soils".FRONTIERS IN ECOLOGY AND EVOLUTION 11(2024).