气候变化领域集成服务门户(CCPortal): Relative contributions of competition, stand structure, age, and climate factors to tree mortality of Chinese fir plantations: Long-term spacing trials in southern China

CCPortal

DOI	10.1016/j.foreco.2020.118103
	Relative contributions of competition, stand structure, age, and climate factors to tree mortality of Chinese fir plantations: Long-term spacing trials in southern China
	Zhang X.; Wang Z.; Chhin S.; Wang H.; Duan A.; Zhang J.
发表日期	2020
ISSN	0378-1127
卷号	465
英文摘要	Tree mortality is an important process during forest succession, influencing forest structure, composition, and ecosystem services. Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.), a native and fast growing species with high quality timber, is widely planted in southern China. Yet the mechanisms leading to tree mortality of Chinese fir plantations under climate change conditions is still not clearly understood. A long-term spacing trial including 60 permanent plots located in Fujian, Jiangxi, Guangxi, and Sichuan provinces in southern China were used to explore tree mortality in relation to competition, age, structural diversity, and climatic variables using a logistic mixed effects model. Results showed that tree mortality increased with increasing LnN (natural logarithm of number of trees per ha), tree density index (TN), Gini coefficient, age (A), LnAP (natural logarithm of annual precipitation), and mean warmest month temperature, and decreased with increasing relative density (RD), inverse of diameter (1/D), and mean annual temperature. The relative contributions of competition, age and structure variables to mortality were 88.82%, much larger than climate variables 11.18%. In addition, in view of the contributions of stand factors, competition indices including RD, LnN, TN were 50.57%, much larger than age (A, 1/D) contribution of 37.45%, and structural diversity contribution of 0.80%, which indicated that competition was the main driver of tree mortality. Our findings highlight the mechanisms of tree mortality of Chinese fir in southern China under climate change. © 2020 Elsevier B.V.
关键词	Climate change Competition Ecosystems Chinese fir Climate Cunninghamia lanceolata Logistic mixed-effects models Mean annual temperatures Relative contribution Stand structures Tree mortality Forestry age structure climate effect coniferous forest diameter forest management interspecific competition mortality plantation forestry spacing stand structure Abies Age Chinese Competition Ecosystems Forestry Mortality Trees China Fujian Guangxi Zhuangzu Jiangxi Sichuan Cunninghamia lanceolata
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/132839
推荐引用方式 GB/T 7714	Zhang X.,Wang Z.,Chhin S.,et al. Relative contributions of competition, stand structure, age, and climate factors to tree mortality of Chinese fir plantations: Long-term spacing trials in southern China[J]. Forest Ecology and Management,2020,465.
APA	Zhang X.,Wang Z.,Chhin S.,Wang H.,Duan A.,&Zhang J..(2020).Relative contributions of competition, stand structure, age, and climate factors to tree mortality of Chinese fir plantations: Long-term spacing trials in southern China.,465.
MLA	Zhang X.,et al."Relative contributions of competition, stand structure, age, and climate factors to tree mortality of Chinese fir plantations: Long-term spacing trials in southern China".465(2020).