气候变化领域集成服务门户(CCPortal): Structural diversity of the longleaf pine ecosystem

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DOI	10.1016/j.foreco.2020.117987
	Structural diversity of the longleaf pine ecosystem
	Sharma A.; Cory B.; McKeithen J.; Frazier J.
发表日期	2020
ISSN	0378-1127
卷号	462
英文摘要	Structural diversity is an important attribute of forest ecosystems and is related to ecosystem stability, adaptability and resilience as well as biodiversity and productivity. Structural diversity in the longleaf pine (Pinus palustris Mill.) ecosystem, the most diverse ecosystem of North America, has not been well documented, especially across the longleaf pine's range of occurrence. We utilized data from 919 Forest Inventory and Analysis (FIA) plots of longleaf pine distributed across 9 states of the southeastern United States and classified these plots on the bases of stand origin (natural or artificial), ownership (public or private), burn condition (burned or not burned in the past 5 years), site conditions (xeric, mesic, or hydric), and number of age classes (one or two). For each plot under a classification category, we calculated Shannon diversity index based on 5-cm diameter classes. The structural diversity estimates, based on Shannon diversity indices, were then analyzed for the entire range of the longleaf pine ecosystem. Our findings indicate that the structural diversity varies between 0.00 and 2.20 across the longleaf pine range, with mean and median structural diversity of 1.35 and 1.42, respectively. Stand origin, site condition, ownership, and number of age classes significantly affected mean structural diversity (α = 0.05). Plots with natural origin, mesic or hydric site conditions, public ownership, and two age classes had higher structural diversity. Using the geographic coordinates of each FIA plot and the corresponding Shannon index value, we created a structural diversity distribution map and a hot spot map of the longleaf pine ecosystem. The maps showed that the longleaf pine ecosystem exhibited variable and heterogeneous distribution of structural diversity in the southeastern United States, with southeastern Mississippi and central Alabama areas as the hotspots. Southcentral Georgia exhibited least structural diversity in longleaf pine forests in the southeastern United States. © 2020 Elsevier B.V.
关键词	Biodiversity Image reconstruction Reforestation Forest inventory and analysis Geographic coordinates Heterogeneous distributions Longleaf pine ecosystems Silviculture Slash pines Southern pines Uneven-aged stands Ecosystems biodiversity coniferous forest coniferous tree diversity index forest ecosystem forest inventory geographical distribution heterogeneity home range ownership regeneration restoration ecology silviculture stand structure Age Biodiversity Ecosystems Public Ownership Reforestation Silviculture Southern Pines United States Alabama Georgia Mississippi North America United States Pinus echinata Pinus elliottii Pinus palustris
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/132935
推荐引用方式 GB/T 7714	Sharma A.,Cory B.,McKeithen J.,et al. Structural diversity of the longleaf pine ecosystem[J]. Forest Ecology and Management,2020,462.
APA	Sharma A.,Cory B.,McKeithen J.,&Frazier J..(2020).Structural diversity of the longleaf pine ecosystem.,462.
MLA	Sharma A.,et al."Structural diversity of the longleaf pine ecosystem".462(2020).