气候变化领域集成服务门户(CCPortal): Evaluating maximum stand density and size–density relationships based on the Competition Density Rule in Korean pines and Japanese larch

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DOI	10.1016/j.foreco.2019.05.017
	Evaluating maximum stand density and size–density relationships based on the Competition Density Rule in Korean pines and Japanese larch
	Lee D.; Choi J.
发表日期	2019
ISSN	0378-1127
起始页码	204
结束页码	213
卷号	446
英文摘要	Understanding the relationship between size and density is an important issue for stand density management in terms of self-thinning in even-aged stands. This study was conducted to determine the maximum stand density and evaluate the size–density relationship based on the Competition Density Rule (C-D rule) for Korean red pine, Korean white pine, and Japanese larch in Korea. The study area covered permanently monitored plots of even-aged plantations established for investigating and modeling long-term growth changes through silviculture. Data were applied using the first inventory within the permanent plots before implementing artificial thinning according to research design. To predict the maximum stem number by species, the C-D rule was applied, and the three-parameter method was shown to be better than the four-parameter method. According to the results based on the C-D rule with three parameters, stand density index by species was 1041 trees (Korean red pine, Pinus densiflora), 1089 trees (Korean white pine, P. koraiensis), and 1005 trees (Japanese larch, Larix kaempferi) in 25 cm of quadratic mean diameter. In the relationship between the maximum stem number and quadratic mean diameter with log–log scale, the intercept for Korean red pine, Korean white pine, and Japanese larch was 10.317, 10.901, and 11.331, and the slope by species was −1.047, −1.214, and −1.373, respectively. To analyze the size–density relationship, the sample plots were classified based on relative spacing and relative density. In regression analysis with log–log scale using the censored sample plot data, maximum size–density relationship was explained the most with quadratic mean diameter rather than mean stem volume and dominant height. © 2019 Elsevier B.V.
英文关键词	Carrying capacity; Maximum stem number; Self-thinning; Stand density index; Tree mortality
语种	英语
scopus关键词	Electric current carrying capacity (cables); Regression analysis; Artificial thinning; Quadratic mean diameter; Self-thinning; Stand density index; Stand density managements; Stem numbers; Three parameter method; Tree mortality; Forestry; carrying capacity; coniferous tree; forest inventory; forest management; growth; index method; mortality; self thinning; silviculture; stand structure; stem; Averages; Forestry; Korean; Larix Leptolepis; Pinus Strobus; Regression Analysis; Stand Density; Trees; Korea; Larix kaempferi; Pinus densiflora; Pinus koraiensis; Pinus resinosa; Pseudolarix kaempferi
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/155936
作者单位	Department of Forest Management, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, 24341, South Korea
推荐引用方式 GB/T 7714	Lee D.,Choi J.. Evaluating maximum stand density and size–density relationships based on the Competition Density Rule in Korean pines and Japanese larch[J],2019,446.
APA	Lee D.,&Choi J..(2019).Evaluating maximum stand density and size–density relationships based on the Competition Density Rule in Korean pines and Japanese larch.Forest Ecology and Management,446.
MLA	Lee D.,et al."Evaluating maximum stand density and size–density relationships based on the Competition Density Rule in Korean pines and Japanese larch".Forest Ecology and Management 446(2019).