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| Registros recuperados: 12 | |
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| PIPONIOT, C.; CABON, A.; DESCROIX, L.; DOURDAIN, A.; MAZZEI, L.; OULIAC, B.; RUTISHAUSER, E.; SIST, P.; HÉRAULT, B.. |
| Background: Managed forests are a major component of tropical landscapes. Production forests as designated by national forest services cover up to 400 million ha, i.e. half of the forested area in the humid tropics. Forest management thus plays a major role in the global carbon budget, but with a lack of unified method to estimate carbon fluxes from tropical managed forests. In this study we propose a new time- and spatially-explicit methodology to estimate the above-ground carbon budget of selective logging at regional scale. Results: The yearly balance of a logging unit, i.e. the elementary management unit of a forest estate, is modelled by aggregating three sub-models encompassing (i) emissions from extracted wood, (ii) emissions from logging damage and... |
| Tipo: Separatas |
Palavras-chave: Selective logging; Error propagation; Production forests; Ciclo do carbono.; Floresta.; Amazonia; Carbon cycle.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1051226 |
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| PIPONIOT, C.; RÖDIG, E.; PUTZ, F. E.; RUTISHAUSER, E.; SIST, P.; ASCARRUNZ, N.; BLANC, L.; DERROIRE, G.; DESCROIX, L.; GUEDES, M. C.; CORONADO, E. H.; HUTH, A.; KANASHIRO, M.; LICONA, J. C.; FREITAS, L. J. M. de; OLIVEIRA, M. V. N. d'; PEÑA-CLAROS, M.; RODNEY, K.; SHENKIN, A.; SOUZA, C. R. de; VIDAL, E.; WEST, T. A. P.; WORTEL, V.; HÉRAULT, B.. |
| Around 30Mm3 of sawlogs are extracted annually by selective logging of natural production forests in Amazonia, Earth?s most extensive tropical forest. Decisions concerning the management of these production forests will be of major importance for Amazonian forests? fate. To date, no regional assessment of selective logging sustainability supports decision-making. Based on data from 3500 ha of forest inventory plots, our modelling results show that the average periodic harvests of 20m3 ha?1 will not recover by the end of a standard 30 year cutting cycle. Timber recovery within a cutting cycle is enhanced by commercial acceptance of more species and with the adoption of longer cutting cycles and lower logging intensities. Recovery rates are faster in Western... |
| Tipo: Artigo de periódico |
Palavras-chave: Manejo florestal; Explotación forestal; Extração seletiva; Selective logging; Exploración selectiva; Regeneración natural; Modelos de simulación; Administração Florestal; Exploração Florestal; Extração da Madeira; Madeira Serrada; Impacto Ambiental; Regeneração Natural; Modelo de Simulação; Forest management; Logging; Lumber; Environmental impact; Natural regeneration; Simulation models. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114232 |
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| ALMEIDA,Everton José; LUIZÃO,Flávio; RODRIGUES,Domingos de Jesus. |
| Nutrient recycling in the forest is linked to the production and decomposition of litter, which are essential processes for forest maintenance, especially in regions of nutritionally poor soils. Human interventions in forest such as selecttive logging may have strong impacts on these processes. The objectives of this study were to estimate litterfall production and evaluate the influence of environmental factors (basal area of vegetation, plant density, canopy cover, and soil physicochemical properties) and anthropogenic factors (post-management age and exploited basal area) on this production, in areas of intact and exploited forest in southern Amazonia, located in the northern parts of Mato Grosso state. This study was conducted at five locations and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Transition forest; Nutrient cycling; Selective logging; Forest management. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000200157 |
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| ANDERSEN, H. E.; REUTEBUCH, S. E.; MCGAUGHEY, R. J.; OLIVEIRA, M. V. N. D.; KELLER, M.. |
| The objective of this study was to test the use of repeat flight, airborne laser scanning data (lidar) for estimating changes associatedwith low-impact selective logging (approx. 10?15 m3 ha−1 = 5?7% of total standing volume harvested) in natural tropical forests in the Western Brazilian Amazon. Specifically, we investigated change in area impacted by selective logging, change in tall canopy (30 m+) area, change in lidar canopy structuremetrics, and change in above ground biomass (AGB) using a model-based statistical framework. Ground plot measurements were only available from the time of the 2010 lidar acquisition. A simple differencing of the 2010 and 2011 lidar canopy height models identified areas where canopy over 30 m tall had been removed.... |
| Tipo: Artigo de periódico |
Palavras-chave: Forest biomass; Tropical forest management.; Selective logging; Airborne laser scanning; Amazon forest monitoring; Lidar.. |
| Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/971828 |
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| SILVA, P. H. da; GOMIDE, L. R.; FIGUEIREDO, E. O.; CARVALHO, L. M. T. de; FERRAZ FILHO, A. C.. |
| Reduced-impact logging is a well known practice applied in most sustainable forest management plans in the Amazon. Nevertheless, there are still ways to improve the operational planning process. Therefore, the aim of this study was to create an integer linear programming (ILP) to fill in the knowledge gaps in the decision support system of reduced impact logging explorations. The minimization of harvest tree distance to wood log landing was assessed. Forest structure aspects, income and wood production were set in the model, as well as the adjacency constraints. Data are from a dense ombrophylous forest in the western Brazilian Amazon. We applied the phytosociological analysis and BDq method to define the selective logging criteria. Then, ILP models were... |
| Tipo: Artigo de periódico |
Palavras-chave: Manejo florestal sustentável; Selective logging; Reduced-impact logging; Porto Acre (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Silvicultura sustentable.; Manejo forestal; Optimización de los sistemas; Patios de clasificación; Programación lineal; Administração florestal; Floresta tropical; Extração da madeira; Estocagem; Método de otimização; Programação linear; Sustainable forestry; Tropical forests; Sort yards; System optimization; Linear programming.. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088841 |
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| PIPONIOT, C.; RUTISHAUSER, E.; DERROIRE, G.; PUTZ, F. E.; SIST, P.; WEST, T. A. P.; DESCROIX, L.; GUEDES, M. C.; CORONADO, E. N. H.; KANASHIRO, M.; FREITAS, L. J. M. de; OLIVEIRA, M. V. N. d'; PEÑA-CLAROS, M.; RODNEY, K.; RUSCHEL, A. R.; SOUZA, C. R. de; VIDAL, E.; WORTEL, V.; HÉRAULT, B.. |
| Although tropical forests harbour most of the terrestrial carbon and biological diversity on Earth they continue to be deforested or degraded at high rates. In Amazonia, the largest tropical forest on Earth, a sixth of the remaining natural forests is formally dedicated to timber extraction through selective logging. Reconciling timber extraction with the provision of other ecosystem services (ES) remains a major challenge for forest managers and policy makers. This study applies a spatial optimisation of logging in Amazonian production forests to analyse potential trade-offs between timber extraction and recovery, carbon storage, and biodiversity conservation. Current logging regulations with unique cutting cycles result in sub-optimal ES-use efficiency.... |
| Tipo: Artigo de periódico |
Palavras-chave: Selective logging; Multicriteria optimisation; Exploração seletiva; Otimização multicritério; Serviços de ecossistemas; Produção de madeira; Oxigênio; Biodiversidade; Amazonia; Timber production; Carbon; Biodiversity; Ecosystem services. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1116444 |
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| MILHEIRAS, S. G.; GUEDES, M. C.; SILVA, F. A. B.; APARÍCIO, P.; MACE, G. M.. |
| The preservation of tropical forests is increasingly at risk, including forests located within human-modified landscapes that retain high conservation value. People modify and interact with these landscapes through a wide range of uses. However, our knowledge of how different forest uses affect biodiversity is limited. Here, we analyse the responses of different taxa to four distinct categories of forest management, namely oldgrowth forest, Brazil nut extraction areas, reduced impact logging areas, and eucalyptus plantations. Within six independent replicates of each category, we sampled three taxa (fruit-feeding butterflies, dung beetles, and trees) in eastern Amazonia. Forests under moderate use (Brazil nut extraction and reduced-impact logging) had... |
| Tipo: Artigo de periódico |
Palavras-chave: Scarabaeinae; Selective logging; Manejo florestal; Amazon forest; Floresta Tropical; Castanha; Forest management; Nymphalidae; Brazil nuts. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1128305 |
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| Ferreira,S. J. F.; Luizão,F. J.; Ross,S. M.; Biot,Y.; Mello-Ivo,W. M. P.. |
| Soil water storage of Central Amazonian soil profiles in upland forest plots subjected to selective logging (in average, 8 trees or 34, 3 m³ of timber per hectare were removed) was measured in four layers, down to a depth of 70 cm. The study lasted 27-months and was divided in two phases: measurements were carried out nearly every week during the first 15 months; in the following year, five intensive periods of measurements were performed. Five damage levels were compared: (a) control (undisturbed forest plot); (b) centre of the clearing/gap; (c) edge of the gap; (d) edge of the remaining forest; and (e) remaining forest. The lowest values for water storage were found in the control (296 ± 19.1 mm), while the highest were observed (333 ± 25.8 mm) in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Selective logging; Soil water storage; Upland rain forest; Central Amazonia. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832004000100006 |
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| Registros recuperados: 12 | |
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