气候变化领域集成服务门户(CCPortal): Overstory trees in excess: A threat to restoration success in Brazilian Atlantic forest

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DOI	10.1016/j.foreco.2019.117453
	Overstory trees in excess: A threat to restoration success in Brazilian Atlantic forest
	Oliveira C.D.C.D.; Oliveira I.R.C.D.; Suganuma M.S.; Durigan G.
发表日期	2019
ISSN	0378-1127
卷号	449
英文摘要	Tree planting is the most widely used technique for tropical forest restoration because it accelerates the recovery of forest structure and ecosystem functioning. Despite the importance of tree size distribution to the ecological function and habitat quality of restored forests, it has received little attention. Here we ask if the structure of reference forests has been recovered by planting tree seedlings and discuss the implications of skewed tree-size distributions for sustainability of restored forests. We sampled 11 tropical forest sites that had undergone restoration for between 16 and 53 years after planting tree seedlings and nine reference ecosystems (old-growth, secondary and degraded forests) in Brazilian Atlantic forest, and compared them by the abundance of individuals in five diameter classes. Restored forests presented 83% greater abundance of large trees (>20 cm DBH), 41% lower abundance of saplings (1 ≤ DBH < 5 cm) and 43% lower abundance of small trees (5 ≤ DBH < 10 cm). The abundance of smaller individuals (DBH < 1 cm), however, did not differ between restored and reference forests, indicating successful colonization of the understorey. Low mortality in the large class (DBH ≥ 20 cm) results in excess of big trees, which constrains recruitment of small plants to the intermediate size classes, likely due to asymmetric competition for light. The excess of large trees demonstrates that gap dynamics can take longer to naturally re-establish in these even-aged forests, likely due to the high density of long-lived trees planted at the same time. Thinning may be a possible adaptive-management strategy to reduce the density of big trees and stimulate recruitment of intermediate size classes. © 2019 Elsevier B.V.
英文关键词	Asymmetric competition; Carbon balance; Density; Forest restoration; Forest structure; Natural regeneration; Tree size classes; Understorey
语种	英语
scopus关键词	Conservation; Density (specific gravity); Ecosystems; Restoration; Seed; Size distribution; Tropics; Asymmetric competition; Carbon balance; Forest restoration; Forest structure; Natural regeneration; Tree size; Understorey; Reforestation; asymmetric competition; carbon balance; colonization; forest ecosystem; gap dynamics; habitat quality; mortality; overstory; restoration ecology; seedling emergence; size distribution; sustainability; tree; tropical forest; understory; Conservation; Ecosystems; Natural Reforestation; Restoration; Tropics; Atlantic Forest; Brazil
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/155836
作者单位	Departamento de Ciência Florestal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Avenida Universitária, 3780, Altos do Paraíso, CEP 18610-034 Botucatu, São Paulo, Brazil; Departamento de Estatística, Universidade Federal de Lavras, Caixa Postal 3037, CEP 37200-000 Lavras, Minas Gerais, Brazil; Centro de Ciências Humanas e da Educação, Universidade Estadual do Norte do Paraná, Avenida Portugal, 340, Centro, CEP 86300-000 Cornélio Procópio, Paraná, Brazil; Floresta Estadual de Assis, Instituto Florestal do Estado de São Paulo, Caixa Postal 104, CEP 19807-300 Assis, São Paulo, Brazil
推荐引用方式 GB/T 7714	Oliveira C.D.C.D.,Oliveira I.R.C.D.,Suganuma M.S.,et al. Overstory trees in excess: A threat to restoration success in Brazilian Atlantic forest[J],2019,449.
APA	Oliveira C.D.C.D.,Oliveira I.R.C.D.,Suganuma M.S.,&Durigan G..(2019).Overstory trees in excess: A threat to restoration success in Brazilian Atlantic forest.Forest Ecology and Management,449.
MLA	Oliveira C.D.C.D.,et al."Overstory trees in excess: A threat to restoration success in Brazilian Atlantic forest".Forest Ecology and Management 449(2019).