气候变化领域集成服务门户(CCPortal): Rethinking maximum stand basal area and maximum SDI from the aspect of stand dynamics

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DOI	10.1016/j.foreco.2020.118462
	Rethinking maximum stand basal area and maximum SDI from the aspect of stand dynamics
	Zhao D.; Bullock B.P.; Montes C.R.; Wang M.
发表日期	2020
ISSN	0378-1127
卷号	475
英文摘要	The maximum stand basal area (BA) and maximum stand density index (SDI) are often used to express stand carrying capacity in forestry. But their definitions are inconsistent in the literature. The maximum stand BA in most previous studies is associated with an upper boundary for a population of stands and is commonly derived from maximum size-density relationships (MSDRs). The maximum stand BA implied by MSDRs, under the assumption that stands attain maximum BA while attaining maximum SDI, is non-decreasing and divergent. We defined the maximum stand BA and maximum SDI for individual stands based on their BA and SDI development behaviors. Based on the mathematical relationships among stand BA, SDI, thinning, and quadratic mean diameter trajectories and their observed full trajectories in 551 unthinned plots selected from six long-term loblolly pine experimental studies, we theoretically and empirically proved that stands would achieve their maximum BA only after reaching their maximum SDI. The general mean maximum stand BA and maximum SDI for loblolly pine in the southern US were 46.2 m2 ha−1 and 1002 trees ha−1, respectively, and both showed significant variation (30.2–61.7 m2 ha−1 and 600–1410 trees ha−1, respectively). With the information of site quality, initial density and silvicultural treatments, our developed models could estimate the magnitude and timing of maximum stand BA for loblolly pine stands. Insights into individual stand BA and SDI trajectories provide more information for developing site specific silvicultural prescriptions. © 2020 Elsevier B.V.
英文关键词	Loblolly pine; Maximum SDI; Maximum stand basal area; Self-thinning trajectory
语种	英语
scopus关键词	Trajectories; Initial density; Loblolly pine stands; Mathematical relationship; Quadratic mean diameter; Silvicultural prescriptions; Silvicultural treatments; Stand basal area; Stand density index; Forestry; basal area; carrying capacity; coniferous tree; divergence; empirical analysis; population density; silviculture; size distribution; stand structure; Averages; Basal Area; Forestry; Pinus Taeda; Stand Density; Trajectories; Trees; United States; 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/155020
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.,et al. Rethinking maximum stand basal area and maximum SDI from the aspect of stand dynamics[J],2020,475.
APA	Zhao D.,Bullock B.P.,Montes C.R.,&Wang M..(2020).Rethinking maximum stand basal area and maximum SDI from the aspect of stand dynamics.Forest Ecology and Management,475.
MLA	Zhao D.,et al."Rethinking maximum stand basal area and maximum SDI from the aspect of stand dynamics".Forest Ecology and Management 475(2020).