Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092366 |
Heterotrophic respiration and the divergence of productivity and carbon sequestration | |
Asko Noormets; Rosvel Bracho; Eric Ward; John Seiler; Brian Strahm; Wen Lin; Kristin McElligott; Jean‐; Christophe Domec; Carlos Gonzalez‐; Benecke; Eric J. Jokela; Daniel Markewitz; Cassandra Meek; Guofang Miao; Steve G. McNulty; John S. King; Lisa Samuelson; Ge Sun; Robert Teskey; Jason Vogel; Rodney Will; Jinyan Yang; Timothy A. Martin | |
2021-03-27 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Net primary productivity (NPP) and net ecosystem production (NEP) are often used interchangeably, as their difference, heterotrophic respiration (soil heterotrophic CO2 efflux, RSH=NPP‐NEP), is assumed a near‐fixed fraction of NPP. Here we show, using a rangewide replicated experimental study in loblolly pine (Pinus taeda) plantations that RSH responds differently than NPP to fertilization and drought treatments, leading to the divergent responses of NPP and NEP. Across the natural range of the species, the moderate responses of NPP (+11%) and RSH (‐7%) to fertilization combined such that NEP increased nearly 3‐fold in ambient control and 43% under drought treatment. A 13% decline in RSH under drought led to a 26% increase in NEP while NPP was unaltered. Such drought benefit for carbon sequestration was nearly 2‐fold in control, but disappeared under fertilization. Carbon sequestration efficiency, NEP:NPP, varied 2‐fold among sites, and increased up to 3‐fold under both drought and fertilization. |
领域 | 气候变化 |
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/320922 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Asko Noormets,Rosvel Bracho,Eric Ward,et al. Heterotrophic respiration and the divergence of productivity and carbon sequestration[J]. Geophysical Research Letters,2021. |
APA | Asko Noormets.,Rosvel Bracho.,Eric Ward.,John Seiler.,Brian Strahm.,...&Timothy A. Martin.(2021).Heterotrophic respiration and the divergence of productivity and carbon sequestration.Geophysical Research Letters. |
MLA | Asko Noormets,et al."Heterotrophic respiration and the divergence of productivity and carbon sequestration".Geophysical Research Letters (2021). |
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