气候变化领域集成服务门户(CCPortal): Tree regeneration and soil responses to management alternatives in beetle-infested lodgepole pine forests

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DOI	10.1016/j.foreco.2020.118182
	Tree regeneration and soil responses to management alternatives in beetle-infested lodgepole pine forests
	Rhoades C.C.; Hubbard R.M.; Elder K.; Fornwalt P.J.; Schnackenberg E.; Hood P.R.; Tinker D.B.
发表日期	2020
ISSN	0378-1127
卷号	468
英文摘要	Recent mountain pine beetle (Dendroctonus ponderosae; MPB) outbreaks have caused one of the most widespread and dramatic changes in forest condition in North American forests in more than a century and highlighted challenges facing resource managers. To address uncertainty regarding the consequences of post-harvest woody residue management on soil productivity and tree regeneration following MPB outbreaks in lodgepole pine-dominated forests we compared three treatment prescriptions (bole-only harvest, whole-tree harvest, and whole-tree harvest with scarification) and uncut stands. The study was replicated at twelve sites across a range of operational project areas and stand conditions in northern Colorado. Salvage logging generated a new cohort of lodgepole pine at densities far above the threshold considered adequate to develop into well-stocked stands (1700–2300 t ha−1 in logged compared to 537 t ha−1 in uncut areas). Regeneration density was generally highest in whole-tree harvested areas. Growth of planted and naturally regenerating lodgepole pine recruits was best in the bole-only, residue-retention treatment, where soil moisture and inorganic nitrogen supply was also highest. However, we found no indication that whole-tree harvesting lowered soil moisture, soil nitrogen supply or pools relative to uncut stands. The density of trees regenerating beneath uncut stands indicates that post-outbreak forest structure should recover without management in these forests. The cohort of trees that regenerated following MPB-related overstory mortality, but prior to harvesting, comprise the fastest-growing component of the growing stock and 30% of its density. The broader watershed-scale outcomes of these treatments and their implications for wildfire behavior and other effects remain uncertain. However, the soil and tree patterns we report during the initial post-treatment period inform on-going decisions regarding harvest and residue retention and create a platform to guide future forest management research. © 2020
语种	英语
scopus关键词	Harvesting; Nitrogen; Soil moisture; Dendroctonus ponderosae; Lodgepole pine forests; Management research; Mountain pine beetle; Operational projects; Treatment prescription; Whole tree harvesting; Whole-tree harvest; Reforestation; beetle; community structure; coniferous tree; forest ecosystem; forest management; inorganic nitrogen; logging (timber); management practice; parasite infestation; regeneration; soil moisture; uncertainty analysis; Forest Management; Harvesting; Nitrogen; Pinus Contorta; Reforestation; Soil; Trees; Colorado; United States; Coleoptera; Dendroctonus ponderosae; Pinus contorta; Pinus mugo
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155245
作者单位	U.S. Forest Service, Rocky Mountain Research Station, Fort Collins, CO, United States; U.S. Forest Service, Medicine Bow-Routt National Forests, Steamboat Springs, CO, United States; Department of Botany, University of Wyoming, Laramie, WY, United States
推荐引用方式 GB/T 7714	Rhoades C.C.,Hubbard R.M.,Elder K.,et al. Tree regeneration and soil responses to management alternatives in beetle-infested lodgepole pine forests[J],2020,468.
APA	Rhoades C.C..,Hubbard R.M..,Elder K..,Fornwalt P.J..,Schnackenberg E..,...&Tinker D.B..(2020).Tree regeneration and soil responses to management alternatives in beetle-infested lodgepole pine forests.Forest Ecology and Management,468.
MLA	Rhoades C.C.,et al."Tree regeneration and soil responses to management alternatives in beetle-infested lodgepole pine forests".Forest Ecology and Management 468(2020).