Recruitment, growth and recovery of commercial tree species over 30 years following logging and thinning in a tropical rain forest

Avila, Angela Luciana de; Schwartz, Gustavo; Ruschel, Ademir Roberto; Lopes, J. do C. A.; Silva, Javier; Carvalho, J. O. P. de; Dormann, Carsten F.; Mazzei, Lucas; Soares, Marcio Hofmann Mota; Bauhus, Jürgen

doi:10.1016/j.foreco.2016.11.039

Cited by 85 publications

(60 citation statements)

References 63 publications

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“…When it comes to biological diversity found in secondary forests, some studies [87,99] revealed that species' recovery of previously logged forested areas take almost 50 years with accompanying silvicultural treatments before they exhibit the pre-logging levels of species diversity. The silvicultural treatments used in Hu et al's study [87] were (1) low-intensity thinning (ringbarking large trees from 16-38 cm), (2) medium-intensity thinning (ringbarking large trees and brushing small trees from 0.9 to 6 m in height) and (3) high-intensity thinning (ringbarking and brushing of small trees around all of the commercial trees).…”

Section: Biodiversitymentioning

confidence: 99%

Towards Forest Landscape Restoration Programs in the Philippines: Evidence from Logged Forests and Mixed-Species Plantations

et al. 2020

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With only 7.01 million hectares of remaining forested areas in the Philippines, there is an urgency to protect these areas, while also implementing restoration strategies to increase forest cover and improve forest functionality. In this study, we assess how the so called “rainforestation” approach, attempts to implement close-to-nature restoration strategies in humid tropic areas. One of the main objectives of the “rainforestation” approach as a form of a mixed-species plantation is the rehabilitation of structural and floristic integrity similar to natural conditions. We compared study areas located in the provinces of Leyte and Southern Leyte composed of logged forests (temporary plots), with logged forests on a permanent research plot and with mixed-species plantations. Basal area, carbon stocks, volume and biological diversity between study areas were calculated and compared, both for static and dynamic data. Results from the static data indicate that carbon stocks (89.30 t ha−1) and volume (262.56 m3 ha−1) of the mixed-species plantations (“rainforestation” approach) is significantly lower than that of the logged forests. However, when it comes to the capacity of the study areas for potential increments, the mixed-species plantations are not significantly different on basal area increment (0.99 m2 ha−1 yr−1), carbon stock increment (3.67 t ha−1 yr−1) and total volume increment (10.47 m3 ha−1 yr−1) as compared to the logged forests’ capacity (basal area—1.08 m2 ha−1 yr−1, carbon—4.06 t ha−1 yr−1 and total volume—11.98 m3 ha−1 yr−1). The species composition was only partly comparable to logged forests of the region, but overall tree species richness is high in comparison to classical plantation approaches. Previously logged forests are able to recover fast reaching surprisingly high values of carbon stocks and potential commercial timber volume. Our study indicates that “rainforestation” cannot fully replace the functionality of natural forests, but can provide a surprisingly multifunctional tool for landscape restoration, providing both timber and non-timber ecosystem services.

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Section: Biodiversitymentioning

confidence: 99%

Towards Forest Landscape Restoration Programs in the Philippines: Evidence from Logged Forests and Mixed-Species Plantations

et al. 2020

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“…O plano de manejo deve buscar conseguir um rendimento por ano-safra (ou renda oferecida pelo capital "floresta") aproximadamente regular. Essa estabilização não significa a simplificação da estrutura florestal ou a sua transformação em florestas equiâneas; conforme Taylor (1969) A preocupação de Taylor em "reter parte do incremento na própria floresta" está de acordo com as discussões apresentadas em trabalhos mais recentes (MAZZEI et al, 2010;EDWARDS et al, 2014;HIGMAN et al, 2015;AVILA et al, 2017;RUSLANDI, CROPPER JR. & PUTZ, 2017), nos quais os autores afirmam que o incremento e a recuperação do estoque de madeiras comerciais nas florestas depende essencialmente de extrair menos produto do que o ótimo econômico, visando diminuir as 2 O efeito de "boom-colapso" é descrito como uma consequência da exploração madeireira desordenada. Tipicamente, os pólos madeireiros iniciam suas atividades com cortes seletivos, extraindo apenas espécies e indivíduos mais rentáveis.…”

Section: Importância Socioeconômica Da Domesticação De Florestasunclassified

“…Porém, essas alterações intensivas são contrárias aos princípios da EIR de diminuir os danos, comprometem a resiliência do talhão, encarecem o manejo (pois demandam mais operações para conduzir a floresta) e podem impossibilitar a sustentabilidade do projeto florestal (BARRETO et al, 1998;FREITAS & PINARD, 2008;PEÑA-CLAROS et al, 2008a;ESPADA et al, 2012). AZEVEDO et al, 2008;KRISNAWATI & WAHJONO, 2010;MAZZEI et al, 2010;SOUZA et al, 2015;AVILA et al, 2017).…”

Section: Tratamentos Silviculturais: Aspectos Técnicos E Sócio-econômunclassified

“…Alguns autores (SCHULZE et al, 2008;MAZZEI et al, 2010;EDWARDS et al, 2014;AVILA et al, 2017) A Figura 15 apresenta a dinâmica de área basal dos blocos, dividindo-se as árvores em comerciais e não comerciais ("C" e "NC", respectivamente), e inferiores ao diâmetro mínimo de corte ou não ("-" e "+", respectivamente). Para TE, observa-se que a mortalidade de árvores C+ (indicada pela redução da área basal desse grupo) é compensada pelo crescimento de C-e NC-.…”

Section: Ano Grupounclassified

“…Nesse sentido, são propostas duas possíveis soluções, cuja aplicação simultânea parece ser tecnicamente a solução mais adequada: a) Aumentar a proporção de árvores de grande porte retidas, de forma a manter sempre para cortes futuros indivíduos das maiores classes diamétricas possíveis. Essa recomendação visa distribuir de forma racional e planejada o incremento nas diferentes classes diamétricas, retendo parte do incremento na floresta para "consolidar o capital representado pelas árvores em crescimento" (TAYLOR, 1969;MAZZEI et al, 2010;EDWARDS et al, 2014;HIGMAN et al, 2015;AVILA et al, 2017 VIDAL, 2004;WADSWORTH & ZWEEDE, 2006;PEÑA-CLAROS et al 2008a;SCHULZE et al, 2008;VILLEGAS et al, 2009;KRISNAWATI & WAHJONO, 2010;MAZZEI et al, 2010;PUTZ et al, 2012;SOUZA et al, 2015;AVILA et al, 2017).…”

Section: Conclusõesunclassified

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