气候变化领域集成服务门户(CCPortal): Rarity of shortleaf, slash, and longleaf pine seedlings in oak-pine forest types: An assessment of associated environmental, stand, site, and disturbance factors

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DOI	10.1016/j.foreco.2019.02.013
	Rarity of shortleaf, slash, and longleaf pine seedlings in oak-pine forest types: An assessment of associated environmental, stand, site, and disturbance factors
	Ojha S.K.; Naka K.; Dimov L.D.; Bhatta D.
发表日期	2019
ISSN	0378-1127
起始页码	151
结束页码	162
卷号	438
英文摘要	Determining the factors that influence the regeneration of pine in oak-pine forests is crucial for understanding natural regeneration dynamics and for planning forest management strategies. We investigated the vegetation structure and seedling dynamics of shortleaf, slash, and longleaf pine in oak-pine forest types of the southeastern United States. We used logistic regression with penalized maximum likelihood estimation because of the rarity of the regeneration from these pines. We performed canonical correlation, analysis of variance, and community structure analysis to produce multivariate relationships and statistical inferences. The classification accuracy of the logistic regression models for shortleaf, slash, and shortleaf pine were 96.0%, 96.7%, and 97.7%, respectively. The models indicated that environmental, climatic, stand, site productivity, and disturbance factors, or their combinations, had a significant influence on seedling occurrence. The probability of occurrence of seedlings of the three pine species increased with the increase in the overstory basal area from these species: one unit increase in overstory purity ratio of shortleaf, slash, and longleaf pine increased the odds of occurrence of their seedlings by approximately 51, 24, and 7 times, respectively. The probability of occurrence of shortleaf pine seedlings increased with increasing canopy openness in stands with a substantial proportion of shortleaf pine in the overstory. The increase in mean annual temperature and overstory basal area of slash pine increased the probability of occurrence of slash pine seedlings on wetter sites that had disturbance through harvesting and silvicultural treatments. The chances of occurrence of longleaf pine seedlings increased with increasing overstory basal area of longleaf pine, species diversity, and mean annual temperature in low density stands on low productive sites. The findings can help forest managers in designing and implementing silvicultural treatments to promote the natural regeneration of the three pines in oak-pine forests. © 2019 Elsevier B.V.
英文关键词	FIA; Forest disturbances; Logistic modeling; Oak-pine forest; Penalized maximum likelihood estimation; Pine seedlings, regeneration; Site productivity
语种	英语
scopus关键词	Maximum likelihood estimation; Productivity; Regression analysis; Forest disturbances; Logistic models; Penalized maximum-likelihood estimation; Pine forest; Pine seedlings; Site productivity; Reforestation; assessment method; basal area; community structure; coniferous forest; deciduous forest; disturbance; environmental factor; forest management; forestry modeling; forestry production; implementation process; maximum likelihood analysis; overstory; rarity; regeneration; seedling; silviculture; species diversity; stand structure; vegetation structure; Pinus Elliottii; Probability; Productivity; Quercus; Reforestation; Regression Analysis; Seedlings; United States; Pinus echinata; Pinus elliottii; Pinus palustris
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/156112
作者单位	Department of Biological and Environmental Sciences, Alabama A&M University, Normal, AL 35762, United States; Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, VT 05405, United States; Division of Mathematics and Computer Science, University of South Carolina Upstate, Spartanburg, SC 29303, United States
推荐引用方式 GB/T 7714	Ojha S.K.,Naka K.,Dimov L.D.,et al. Rarity of shortleaf, slash, and longleaf pine seedlings in oak-pine forest types: An assessment of associated environmental, stand, site, and disturbance factors[J],2019,438.
APA	Ojha S.K.,Naka K.,Dimov L.D.,&Bhatta D..(2019).Rarity of shortleaf, slash, and longleaf pine seedlings in oak-pine forest types: An assessment of associated environmental, stand, site, and disturbance factors.Forest Ecology and Management,438.
MLA	Ojha S.K.,et al."Rarity of shortleaf, slash, and longleaf pine seedlings in oak-pine forest types: An assessment of associated environmental, stand, site, and disturbance factors".Forest Ecology and Management 438(2019).