气候变化领域集成服务门户(CCPortal): Boreal forest biomass accumulation is not increased by two decades of soil warming

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DOI	10.1038/s41558-018-0373-9
	Boreal forest biomass accumulation is not increased by two decades of soil warming
	Lim H.; Oren R.; Näsholm T.; Strömgren M.; Lundmark T.; Grip H.; Linder S.
发表日期	2019
ISSN	1758678X
卷号	9 期号:1
英文摘要	Increased soil organic matter decomposition with increasing temperature has been hypothesized to enhance soil nitrogen availability, consequently stimulating forest biomass production and offsetting decomposition-induced soil carbon losses1–5. This projection, however, is based on evidence gathered from short-term studies (≤10 years)2,3,5. The key question for carbon sequestration is whether such responses are transient or persist over long forest rotation periods. Here we report on biomass production in a typical nitrogen-limited boreal Picea abies forest, exposed to 18 years of soil warming manipulation (+5 °C) at a plot scale (100 m2). We show that two decades of soil warming elicited only short-duration growth responses, thus not significantly increasing aboveground biomass accumulation. Furthermore, in combination with published work from this forest, our results suggest that increased decomposition is slight and ephemeral, and increased fine root production and turnover in deeper soil may be greater than increased decomposition, netting slightly more biomass, perhaps conserving the soil carbon stock. Thus, this long-term study does not support the notion that the projected increase in soil temperatures will cause either an increased carbon loss with decomposition or a compensatory growth increase from nitrogen mineralization. © 2018, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Picea abies
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124475
作者单位	Department of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), Umeå, Sweden; Nicholas School of the Environment, Duke University, Durham, NC, United States; Department of Forest Sciences, University of Helsinki, Helsinki, Finland; Department of Soil and Environment, SLU, Uppsala, Sweden; Southern Swedish Forest Research Centre, SLU, Alnarp, Sweden
推荐引用方式 GB/T 7714	Lim H.,Oren R.,Näsholm T.,et al. Boreal forest biomass accumulation is not increased by two decades of soil warming[J],2019,9(1).
APA	Lim H..,Oren R..,Näsholm T..,Strömgren M..,Lundmark T..,...&Linder S..(2019).Boreal forest biomass accumulation is not increased by two decades of soil warming.Nature Climate Change,9(1).
MLA	Lim H.,et al."Boreal forest biomass accumulation is not increased by two decades of soil warming".Nature Climate Change 9.1(2019).