气候变化领域集成服务门户(CCPortal): Soil C storage following salvage logging and residue management in bark beetle-infested lodgepole pine forests

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DOI	10.1016/j.foreco.2020.118251
	Soil C storage following salvage logging and residue management in bark beetle-infested lodgepole pine forests
	Avera B.N.; Rhoades C.C.; Calderόn F.; Cotrufo M.F.
发表日期	2020
ISSN	0378-1127
卷号	472
英文摘要	Bark beetle outbreaks have altered carbon (C) dynamics in lodgepole pine (Pinus contorta var. latifolia Engelm. ex Wats.) forests across western North America. The sensitivity of soil C to post-beetle management operations remains unknown in these forests. We quantified total C stocks in the O horizon and upper mineral soil (0–10 cm) 6–7 years after salvage logging in lodgepole pine forests of northern Colorado and compared biomass retention or removal residue management to uncut beetle-infested forests. We evaluated the quantity and chemical composition of C in physical fractions of the O horizon and upper mineral soil layers to better understand how management impacts the quality of C with implications for soil C persistence. Post-harvest residue retention increased O horizon C storage compared to the removal treatment and uncut stands. Total soil C (O horizon and upper 0–10 cm mineral soil) was an average of 11.4 (±5.6) Mg C ha−1 higher in salvage logged plots compared to uncut forests and the increase was primarily in particulate organic matter. Salvage logging did not alter the chemical composition of the soil C fractions analyzed. The C:N ratios, Fourier-transform mid-infrared spectra, and 13C values analyses each showed that the C composition of the organic and upper mineral soil layers were distinct. This indicates that physical transfer of fresh or decomposed O horizon material may not be the primary source of particulate C, and we suggest that belowground inputs are likely to be an important contributor to these mineral soils. Our finding that logging residue removal did not reduce post-harvest upper mineral soil C stocks has implications for biomass harvesting in these forests, though the long-term impacts of post-bark beetle management on C storage in these ecosystems depend on understory dynamics, tree regeneration and forest recovery that will progress over the course of decades. This work suggests that greater understanding of post-logging organic matter inputs and C dynamics in O horizon and mineral SOM fractions can help inform forest management aimed at sustaining soil C. © 2020 Elsevier B.V.
关键词	Biogeochemistry Chemical analysis Dynamics Harvesting Living systems studies Minerals Organic compounds Reforestation Storage (materials)Storage management Chemical compositions Lodgepole pine forests Logging residue removal Management operation Mid-infrared spectra Organic matter inputs Particulate organic matters Pinus contorta var. latifolia Soils beetle carbon sequestration coniferous forest forest management parasite infestation pest outbreak plant residue salvaging selective logging soil carbon soil horizon soil organic matter soil quality Chemical Analysis Dynamics Harvesting Minerals Organic Compounds Reforestation Colorado United States Coleoptera Pinus contorta Scolytinae
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132732
推荐引用方式 GB/T 7714	Avera B.N.,Rhoades C.C.,Calderόn F.,et al. Soil C storage following salvage logging and residue management in bark beetle-infested lodgepole pine forests[J]. Forest Ecology and Management,2020,472.
APA	Avera B.N.,Rhoades C.C.,Calderόn F.,&Cotrufo M.F..(2020).Soil C storage following salvage logging and residue management in bark beetle-infested lodgepole pine forests.,472.
MLA	Avera B.N.,et al."Soil C storage following salvage logging and residue management in bark beetle-infested lodgepole pine forests".472(2020).