气候变化领域集成服务门户(CCPortal): Estimating defoliation impact of Gonipterus platensis on Eucalyptus globulus stands productivity using a forest simulator based on 3-PG

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DOI	10.1016/j.foreco.2020.118495
	Estimating defoliation impact of Gonipterus platensis on Eucalyptus globulus stands productivity using a forest simulator based on 3-PG
	Rua J.C.P.; Barreiro S.; Branco M.; Tomé M.
发表日期	2020
ISSN	0378-1127
卷号	478
英文摘要	Growth losses due to insect defoliations are difficult to estimate. The lack of appropriate tools that account for defoliations in growth simulations makes difficult the task of forest managers to project growth, and thus, the expected economic income. The present work integrates defoliations in the 3-PG forest growth model in order to provide a tool that allows forest managers to estimate Eucalyptus globulus stands growth losses under a set of defoliation scenarios by simulating attacks of the Eucalyptus snout beetle Gonipterus platensis. To mimic these attacks, different amounts of the upper third of the canopy were removed, from 0 to 100%, depending on the scenario intensity, and considering only spring season attacks or both spring and autumn attacks in the same year. A set of E. globulus virtual stands, representing a range of site productivities, were submitted to constant yearly consecutive defoliations since age 2 up to 10. Simulation results showed that, for scenarios that removed 50, 75 and 100% of the upper third of the canopy, volume losses averaged 54, 74 and 83%, respectively, at age 10 with just the spring attack, reaching 69, 82 and 88%, respectively, with also the autumn attack. Removing only 25% of the upper third of the canopy produced relevant losses only if the stands were attacked in both seasons. Lighter defoliations tested seemed to have a marginal effect on stand growth regardless of site quality. The tool was also used to evaluate a field assessment methodology of G. platensis defoliation attacks on a set of real stands by comparing observed and estimated volumes at age 10. Estimations showed increasing volume losses with increasing defoliation intensities. When evaluating the field assessment methodology, results suggest that a single field visit to assess the G. platensis attack level in the whole lifetime of a stand is insufficient to make reliable growth loss estimations. The integration of the impact of defoliations in the 3-PG growth model revealed to be potentially useful as a forest management decision tool. © 2020 Elsevier B.V.
英文关键词	3-PG.d simulator; Blue gum plantations; Eucalyptus snout beetle; Growth loss simulation; Insect defoliation; Pest management tool
语种	英语
scopus关键词	Managers; Productivity; Springs (components); Eucalyptus globulus; Field assessment; Forest growth model; Forest simulator; Growth simulation; Insect defoliation; Management decisions; Site productivity; Forestry; beetle; defoliation; ecological impact; estimation method; evergreen forest; forest management; forestry production; growth modeling; simulator; stand dynamics; Defoliation; Eucalyptus Globulus; Forest Management; Forestry; Growth; Losses; Productivity; Set; Curculionidae; Eucalyptus; Eucalyptus globulus; Gonipterus; Hexapoda
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/154944
作者单位	Forest Research Centre (CEF), School of Agriculture (ISA), University of Lisbon (UL), Tapada de Ajuda, Lisboa, 1349-017, Portugal
推荐引用方式 GB/T 7714	Rua J.C.P.,Barreiro S.,Branco M.,et al. Estimating defoliation impact of Gonipterus platensis on Eucalyptus globulus stands productivity using a forest simulator based on 3-PG[J],2020,478.
APA	Rua J.C.P.,Barreiro S.,Branco M.,&Tomé M..(2020).Estimating defoliation impact of Gonipterus platensis on Eucalyptus globulus stands productivity using a forest simulator based on 3-PG.Forest Ecology and Management,478.
MLA	Rua J.C.P.,et al."Estimating defoliation impact of Gonipterus platensis on Eucalyptus globulus stands productivity using a forest simulator based on 3-PG".Forest Ecology and Management 478(2020).