The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Maria Cecilia Fernandez - One of the best experts on this subject based on the ideXlab platform.
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Timber Production of nothofagus pumilio forests by a shelterwood system in tierra del fuego argentina
Forest Ecology and Management, 2000Co-Authors: Martinez G Pastur, Juan Manuel Cellini, Pablo L Peri, Ricardo Vukasovic, Maria Cecilia FernandezAbstract:Abstract Nothofagus pumilio is the most important Timber native species from south Patagonia of Argentina and Chile. The total volume and Timber Production vary according to site quality, stocking, growth phase and previous land management. The aim of this work was to evaluate the existence and the productive potential of wood for the sawmill industry in a shelterwood seed cut of N. pumilio forests along the range of site classes. Sample plots were established in 3 ha of an old-growth virgin forest without regeneration patches (SDI 95–131%) along the five classes of site (I–V). Total stand volumes varied from 400 to 1100 m 3 /ha and volume density index (ratio of total volume over basal area) varied from 6 to 14 m 3 /m 2 . The volume yield present differ significantly among site qualities with log volumes between 40 and 400 m 3 /ha. The number of Timber logs decreases from the better sites towards the worst (800–200 logs/ha), as well as their volume average (0.5–0.2 m 3 /log). Several published studies in Timber Production were compared and discussed with the obtained results. Considering new alternatives in the N. pumilio Timber management allow managers to obtain higher harvesting indexes, increasing the benefits for the forest company and diminishing the annual wood areas necessary to supply the requirements of the sawmills in Tierra del Fuego.
Nophea Sasaki - One of the best experts on this subject based on the ideXlab platform.
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sustainable management of tropical forests can reduce carbon emissions and stabilize Timber Production
Frontiers in Environmental Science, 2016Co-Authors: Nophea Sasaki, Gregory P Asner, Wolfgang Knorr, Patrick B Durst, Hwan O, Andrew J Lowe, Francis E PutzAbstract:The REDD+ scheme of the United Nations Framework Convention on Climate Change has provided opportunities to manage tropical forests for Timber Production and carbon emission reductions. To determine the appropriate logging techniques, we analyzed potential Timber Production and carbon emission reductions under two logging techniques over a 40-year period of selective logging. We found that use of reduced-impact logging (RIL) techniques alone in tropical Production forests could reduce carbon emissions equivalent to 29-50% of net emissions from tropical deforestation and land use change, while also supplying 45% of global round-wood demand. Adopting RIL plus (RIL+) other improvements in forest management (adopting forest certification and DNA Timber tracking to prevent illegal logging) and wood conversion practices (adopting technology to increase recovery of sawn wood), would result in increasing long-term carbon storage in sawn-wood and reduce logging-induced fire-prone wood wastes by 14-184%. For this to happen, about US$2 billion or $1.86 per Mg CO2 in financial incentives are needed annually for parties to adopt RIL+ and to prevent premature re-entry logging. Our findings suggest that future climate policies explicitly include RIL+ to satisfy the “sustainable management of forests” proviso in the REDD+ scheme, and also count carbon in wood products as eligible credits for trading.
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Sustainable forest management of tropical forests can reduce carbon emissions and stabilize Timber Production
Frontiers in Environmental Science, 2016Co-Authors: Nophea Sasaki, Gregory P Asner, Wolfgang Knorr, Patrick B Durst, Andrew J Lowe, Yude Pan, I. Abe, Lian Pin KohAbstract:The REDD+ scheme of the United Nations Framework Convention on Climate Change has provided opportunities to manage tropical forests for Timber Production and carbon emission reductions. To determine the appropriate logging techniques, we analyzed potential Timber Production and carbon emission reductions under two logging techniques over a 40-year period of selective logging. We found that use of reduced-impact logging (RIL) techniques alone in tropical Production forests could reduce carbon emissions equivalent to 29-50% of net emissions from tropical deforestation and land use change, while also supplying 45% of global round-wood demand. Adopting RIL plus (RIL+) other improvements in forest management (adopting forest certification and DNA Timber tracking to prevent illegal logging) and wood conversion practices (adopting technology to increase recovery of sawn wood), would result in increasing long-term carbon storage in sawn-wood and reduce logging-induced fire-prone wood wastes by 14-184%. For this to happen, about US$2 billion or $1.86 per Mg CO2 in financial incentives are needed annually for parties to adopt RIL+ and to prevent premature re-entry logging. Our findings suggest that future climate policies explicitly include RIL+ to satisfy the “sustainable management of forests” proviso in the REDD+ scheme, and also count carbon in wood products as eligible credits for trading.
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Managing Production forests for Timber Production and carbon emission reductions under the REDD+ scheme
Environmental Science & Policy, 2012Co-Authors: Nophea Sasaki, Kimsun ChhengAbstract:Abstract Sustainable forest management (SFM) ensures the continuous flow of wood products and employment while improving the functionalities of forests as compared to conventional management. Until recently, many projects associated with the reducing emissions from deforestation and forest degradation (REDD) scheme focused only on reducing emissions from deforestation and forest degradation, conservation of carbon stocks, or enhancement of forest carbon stocks. REDD+ is an extension of REDD that also includes, SFM, conservation of carbon stocks, and enhancement of forest carbon stocks. REDD+ projects concerned with securing Timber Production while reducing emissions are very few in number. In this report, we discuss how SFM through the adoption of appropriate logging practices can lead to a reduction in carbon emissions while securing Timber in the tropics. Logging practices affect Timber Production, the structure of forests, and forest-dependent communities because of damages caused by logging itself and the large amounts of logging and wood wastes. By switching from conventional logging to reduced-impact logging practices, International Tropical Timber Organization producer countries could reduce carbon emissions by about 1.5–2.1 billion tCO 2 year −1 while still producing about 164.9–280.8 million m 3 of end-use wood under a 50-year project cycle, with the results being dependent on the chosen scenario. Study results suggest that a policy of reduced-impact logging combined with a 40-year or longer cutting cycle is appropriate for SFM projects as part of the REDD+ scheme.
Arun Agrawal - One of the best experts on this subject based on the ideXlab platform.
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Deforestation and Timber Production in Congo after implementation of sustainable forest management policy
Land Use Policy, 2016Co-Authors: Jodi S Brandt, Christoph Nolte, Arun AgrawalAbstract:Over 400 million hectares of tropical forests are managed for Timber Production, comprising more than half of the remaining global permanent tropical forest estate. A growing proportion of tropical Production forests are managed under Sustainable Forest Management (SFM) principles. The objective of SFM is to achieve multiple benefits, including forest protection, biodiversity conservation and income enhancement. However, the outcomes resulting from the implementation of SFM in tropical forest ecosystems have seldom been examined rigorously. In this paper, we present a methodological approach to assess broad-scale impacts of SFM policy in tropical forest ecosystems. As a case study, we investigated deforestation and Timber Production in logging concessions in the Republic of Congo after the implementation of its SFM-based forestry law in 2000. Compliance with the forestry law was incomplete, allowing a unique opportunity to compare deforestation and legal Timber Production outcomes in concessions that implemented SFM-based policy compared to those that did not. Quasi-experimental matching analysis indicated that deforestation in matched parcels in compliant concessions was up to 2-times higher than matched parcels in non-compliant concessions, equivalent to 67 km2 of forest loss for the period 2005–2010. Annual deforestation data demonstrated that deforestation was stable or increased in all six concessions following the respective date of compliance in each concession. Legal Timber Production increased (by 5%, from 0.18 to 0.19 CBM/ha/yr) and became more stable, in compliant compared to non-compliant concessions. Our results suggest that the presence of SFM in a concession does not immediately lead to less deforestation. Rather, SFM policy may be associated with higher deforestation, because SFM is also associated with higher legal Timber Production, foreign capital, and international Timber demand. Our findings measure short-term associations between SFM and deforestation in the Congo, and underscore the need for empirical evaluation of long-term impacts of SFM in tropical forest ecosystems worldwide.
Martinez G Pastur - One of the best experts on this subject based on the ideXlab platform.
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Timber Production of nothofagus pumilio forests by a shelterwood system in tierra del fuego argentina
Forest Ecology and Management, 2000Co-Authors: Martinez G Pastur, Juan Manuel Cellini, Pablo L Peri, Ricardo Vukasovic, Maria Cecilia FernandezAbstract:Abstract Nothofagus pumilio is the most important Timber native species from south Patagonia of Argentina and Chile. The total volume and Timber Production vary according to site quality, stocking, growth phase and previous land management. The aim of this work was to evaluate the existence and the productive potential of wood for the sawmill industry in a shelterwood seed cut of N. pumilio forests along the range of site classes. Sample plots were established in 3 ha of an old-growth virgin forest without regeneration patches (SDI 95–131%) along the five classes of site (I–V). Total stand volumes varied from 400 to 1100 m 3 /ha and volume density index (ratio of total volume over basal area) varied from 6 to 14 m 3 /m 2 . The volume yield present differ significantly among site qualities with log volumes between 40 and 400 m 3 /ha. The number of Timber logs decreases from the better sites towards the worst (800–200 logs/ha), as well as their volume average (0.5–0.2 m 3 /log). Several published studies in Timber Production were compared and discussed with the obtained results. Considering new alternatives in the N. pumilio Timber management allow managers to obtain higher harvesting indexes, increasing the benefits for the forest company and diminishing the annual wood areas necessary to supply the requirements of the sawmills in Tierra del Fuego.
Stephen F. Hamilton - One of the best experts on this subject based on the ideXlab platform.
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Market Segmentation by Certification: Quantity effects on tropical Timber Production
2019Co-Authors: Matthew T. Cole, Jacqueline Doremus, Stephen F. HamiltonAbstract:Eco-certification standards are increasingly used by industrial countries to impose import restrictions on goods produced by foreign suppliers. Import restrictions on eco-certified goods that prevent the trade of goods derived from unsustainable practices serve to segment global markets served by foreign producers into a conventional market and a certified market, altering market structure and equilibrium prices in a manner that potentially works against sustainability goals. In this paper, we examine the effect of forest certification on tropical Timber Production in Central Africa. Using panel data of Timber Production in Cameroon from 2003 to 2009, we show that conventional Timber producers substantially increase harvest rates in response to eco-certification standards, and that this effect is strongest in less competitive Timber markets. Moreover, we find eco-certification shifts Production to forests with higher extraction costs and potentially higher marginal damages from Timber extraction, exacerbating economic inefficiency.
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Import restrictions by eco-certification: Quantity effects on tropical Timber Production
Journal of Environmental Economics and Management, 1Co-Authors: Matthew T. Cole, Jacqueline Doremus, Stephen F. HamiltonAbstract:Abstract Eco-certification standards are increasingly used by industrial countries to restrict imports of foreign goods produced using unsustainable practices. Import restrictions on eco-certified goods limit the trade of goods to the home country, but also serve to segment global demand into separate regions for conventional goods and certified goods, altering market structure and equilibrium prices in a manner that can work against sustainability goals. In this paper, we examine the effect of recent import restrictions in the US, EU, Canada, and Japan that require tropical Timber products produced in Central Africa to be eco-certified. Using panel data of Timber Production in Cameroon from 2003 to 2009, we show that conventional Timber producers substantially increase harvest rates in response to eco-certification standards. Our findings suggest that import restrictions on tropical Timber products shifted Production to forests with higher extraction costs, exacerbating economic inefficiency and potentially raising marginal damages from Timber extraction.
