气候变化领域集成服务门户(CCPortal): The effect of overwood competition on the long-term survival, growth and stocking of underplanted tree species in logged tropical rainforest in north Queensland, Australia

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DOI	10.1016/j.foreco.2020.118241
	The effect of overwood competition on the long-term survival, growth and stocking of underplanted tree species in logged tropical rainforest in north Queensland, Australia
	Quang P.M.; Baynes J.; Herbohn J.
发表日期	2020
ISSN	0378-1127
卷号	472
英文摘要	Enrichment of selectively logged rainforest by planting seedlings of commercially valuable species is often recommended to improve productivity, ecological functioning, and biodiversity. However, the survival and subsequent growth of enrichment plantings depend on how they respond to competition from neighbours. For successful forest restoration or commercial forest management, the challenge is to determine appropriate frequencies and intensities of silvicultural interventions, principally competition reduction. In this study, we use long-term data (49–60 years) from four enrichment planting experiments established after selective logging and girdling of non-commercial trees in a tropical rainforest in north Queensland, Australia, to assess the effects of competition on the survival and growth of enrichment plantings. We found that residual overwood development severely reduced the survival, diameter and volume growth of two widely planted rainforest species - Flindersia brayleyana (Rutaceae) and Agathis robusta (Araucariaceae). Both species responded well to overstory removal, either as an initial treatment or thereafter. Use of Hegyi's competition index confirmed the strong suppressive effect of neighbours. The most abundant competitor was the fast-growing, early-secondary species Acacia aulacocarpa, which only became apparent after cessation of silvicultural treatments, 7 years after planting. Our results reaffirm the importance of an initial or early-age removal of the competing overstory for the success of enrichment planting. Further silvicultural treatments may be required for extended periods to control excessively increased overwood basal area and to remove late emerging pioneer or early secondary species. © 2020 Elsevier B.V.
关键词	Biodiversity Conservation Essential oils Productivity Seed Tropics Ecological functioning Enrichment plantings Flindersia brayleyana Forest restoration Planting experiments Silvicultural treatments Survival and growth Tropical rain forest Forestry basal area biodiversity competition (ecology)ecosystem function environmental restoration forest management growth rate overstory rainforest seedling selective logging silviculture survival tree planting tropical forest wood Biodiversity Conservation Forestry Productivity Tropics Australia Black Basin [Queensland]Queensland Acacia aulacocarpa Agathis robusta Araucariaceae Flindersia brayleyana Rutaceae
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/132761
推荐引用方式 GB/T 7714	Quang P.M.,Baynes J.,Herbohn J.. The effect of overwood competition on the long-term survival, growth and stocking of underplanted tree species in logged tropical rainforest in north Queensland, Australia[J]. Forest Ecology and Management,2020,472.
APA	Quang P.M.,Baynes J.,&Herbohn J..(2020).The effect of overwood competition on the long-term survival, growth and stocking of underplanted tree species in logged tropical rainforest in north Queensland, Australia.,472.
MLA	Quang P.M.,et al."The effect of overwood competition on the long-term survival, growth and stocking of underplanted tree species in logged tropical rainforest in north Queensland, Australia".472(2020).