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DOI	10.1016/j.foreco.2019.117532
	Loblolly pine outperforms slash pine in the southeastern United States – A long-term experimental comparison study
	Zhao D.; Bullock B.P.; Montes C.R.; Wang M.; Greene D.; Sutter L.
发表日期	2019
ISSN	0378-1127
卷号	450
英文摘要	Loblolly pine (Pinus taeda L.) and slash pine (Pinus elliottii Engelm.) are the two most important commercial timber species in the southeastern U.S. A long-term experimental comparison study, in which loblolly and slash pine plots were paired for combinations of planting density (741, 2224, 3706 trees ha−1) and cultural intensity (operational versus intensive), was established in the lower Coastal Plain to investigate species differences in growth dynamics. Using age 2–21-year inventory plot data and destructive biomass/nutrient sampling data, species comparisons were conducted comprehensively, and the reasons of the species differences and management implications were discussed. When compared to slash pine, loblolly pine had higher stand basal area carrying capacity and maximum stand density index, lower fusiform rust infection rate and less wind damage, leading to its lower mortality. With no species difference in average DBH, loblolly pine consistently had greater average height and live crown length and higher level of tree size inequality. Loblolly pine had lower foliar biomass and lower foliar density, and higher crown length/width ratios due primarily to its longer crowns, suggesting perhaps a slightly greater shade tolerance or less dense canopy. As a result, loblolly pine outperformed slash pine in terms of stand basal area, total volume, aboveground biomass and carbon accumulation. Loblolly pine consistently accumulated more potassium, and this species difference increased with increasing stand age; while slash pine had slightly higher nitrogen and phosphorus contents before age 12. Species differences in mortality patterns and in nutrient accumulations in aboveground biomass emphasized the need to develop species-specific management strategies including different thinning and fertilization regimes. © 2019 Elsevier B.V.
英文关键词	Biomass allocation; Nutrient contents; Species comparison; Stand basal area carrying capacity; Stand density index
语种	英语
scopus关键词	Biomass; Nutrients; Biomass allocation; Nutrient contents; Species comparisons; Stand basal area; Stand density index; Forestry; aboveground biomass; basal area; carbon sequestration; carrying capacity; comparative study; coniferous forest; forestry production; leaf morphology; population density; stand structure; Biomass; Forestry; Management; Nutrients; Pinus Elliottii; Pinus Taeda; United States; Pinus elliottii; Pinus taeda
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/155792
作者单位	Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, United States
推荐引用方式 GB/T 7714	Zhao D.,Bullock B.P.,Montes C.R.,等. Loblolly pine outperforms slash pine in the southeastern United States – A long-term experimental comparison study[J],2019,450.
APA	Zhao D.,Bullock B.P.,Montes C.R.,Wang M.,Greene D.,&Sutter L..(2019).Loblolly pine outperforms slash pine in the southeastern United States – A long-term experimental comparison study.Forest Ecology and Management,450.
MLA	Zhao D.,et al."Loblolly pine outperforms slash pine in the southeastern United States – A long-term experimental comparison study".Forest Ecology and Management 450(2019).