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| Registros recuperados: 91 | |
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| Lucena, Vanderlene Brasil; Raimam, Milena Pupo; Cardoso, Nério Aparecido; Albino, Ulisses Brigatto. |
| The aim of this study wasto determine the presence and influence of Arbuscular-mycorrhizal fungi (AMF) in a stand of Schizolobium amazonicum trees on Tocantina region, Pará State, Brazil. One year old trees, were evaluated in the field by a team that chose the 10 most developed and the 10 less developed individuals. Height, greater circumference of the stem and leaf number were measured for each tree. At the same time, rhizosphere soil samples were collected at the canopy projection. Samples were analyzed for organic matter content, CaCl2 pH and presence of hyphae, vesicles, arbuscules and spores in the fine roots. We carried out further soil AMF spores extraction by centrifugation in a sucrose solution which was used for inoculation of S. amazonicum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant growth; Forestry; Amazonian species; Microbiology Recursos Florestais; Microbiologia do solo Crescimento vegetal; Silvicultura; Espécies amazônicas; Microbiologia. |
| Ano: 2013 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/386 |
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| Michetti, Melania; Nunes Rosa, Renato. |
| This paper analyzes the role of afforestation-reforestation and timber management activities, and their major and secondary economic effects in stabilizing climate during the first commitment period of the Kyoto Protocol. In particular, with a Computable General Equilibrium framework, the ICES model, it is inferred how forest carbon sequestration fits within the European domestic portfolio of a 2020-20 and 2020-30 climate stabilization policy. Afforestation and land use are accounted for by introducing their effects in the model. This is done by relying on carbon sequestration curves provided by Sohngen (2005), which describe the average annual cost of sequestration for selected world regions. Results show that afforestation and timber management could... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Climate Change; General Equilibrium Modelling; Forestry; Afforestation; Environmental Economics and Policy; D58; Q23; Q24; Q52; Q54. |
| Ano: 2011 |
URL: http://purl.umn.edu/99641 |
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| Solymos, Rezso. |
| Az erdőgazdálkodás az erdők fenntartásának, művelésének, sokoldalú, tartamos hasznosításának az alapja. A Föld lakosságának gyarapodásával a történelem folyamán együtt növekedett az embernek az erdővel szemben támasztott igénye. Az igények kielégítésekor hamarosan kitűnt, hogy ezek teljesítésének lehetőségei szigorúan behatároltak. Hosszú távon, tartamosan (fenntarthatóan) akkor nyújthatja az erdő a gazdasági, társadalmi élet számára a legtöbbet, ha az adottságainak megfelelően gazdálkodnak. A Föld erdeinek jelenlegi képe több évezredes fejlődés, valamint emberi beavatkozás eredményeként alakult. A jelenlegi felfogás szerinti „korszerű” erdőgazdálkodás az egyes kontinenseken különböző időben, alig egy-két évszázada jött létre. Abban az esetben azonban, ha... |
| Tipo: Journal Article |
Palavras-chave: Erdőgazdálkodás; Fenntarthatóság; Történeti tanulságok; Természeti törvények; Erdőtársulások; Forestry; Sustainability; Historical lessens; Natural laws; Forest associations; Environmental Economics and Policy; Land Economics/Use. |
| Ano: 2009 |
URL: http://purl.umn.edu/92423 |
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| Dutschke, Michael; Schlamadinger, Bernhard. |
| Afforestation and reforestation (AR) projects in the Clean Development Mechanism are able to create emission permits that can be accounted against the industrialized countries' commitments for limiting their greenhouse gas emissions, as agreed under the Kyoto Protocol. The discussion of how to treat credits from temporary carbon stocks is centering on the proposal for expiring emission credits from AR, which in the subsequent commitment period need to be replaced. While the basic methodological question is thus being solved, the practicalities arising from the solution have so far not been considered. The authors make new proposals on accounting modalities, define the tCER value as compared to a permanent CER, and forecast who will be the potential buyers... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Clean Development Mechanism; Forestry; Environmental Economics and Policy; Q23; Q25; Q13. |
| Ano: 2003 |
URL: http://purl.umn.edu/26241 |
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| Amano, Masahiro; Sedjo, Roger A.. |
| This report compares the approaches of the governments of Japan, Canada, and the European Union member countries toward using carbon sinks to meet their respective Kyoto Protocol carbon reduction targets. Various policies have been proposed by which governments can sequester carbon by promoting afforestation and reforestation, slowing deforestation, and undertaking forest management activities under Articles 3.3 and 3.4. At this time, carbon emissions reduction programs are still under development, both within individual countries and within the context of the protocol. Although some of the details have been worked out, concrete definitions are often still lacking, especially as regards impermanence of forests, additionality, leakage, and socioeconomic and... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Climate; Sinks; Kyoto Protocol; Forestry; Canada; Japan; European Union; Resource /Energy Economics and Policy; F01; Q23; Q28; Q48. |
| Ano: 2003 |
URL: http://purl.umn.edu/10913 |
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| Gideon, Kruseman; Lorenzo, Pellegrini. |
| Deforestation in the North western part of Pakistan is a long standing problem. The Forestry Department, as formal managers of the forest resources, has been undergoing a long reform process aimed at improving its performance. This reform process has not resulted in less deforestation. From the policy perspective this has been leading to stated intentions to further reform the Forestry Department, the question is whether organizational reform is the answer. We think there are more limiting bottlenecks to sustainable forest management in Pakistan. De facto property rights are not as simple as denoted by statutory law. In this article we explore the mechanisms behind the deforestation and try to uncover mechanisms to reverse the process. Although our... |
| Tipo: Working or Discussion Paper |
Palavras-chave: New institutional Economics; Corruption; Forestry; Swat; Q23; Q58. |
| Ano: 2008 |
URL: http://purl.umn.edu/37669 |
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| Simon, Donald M.; Scoville, Orlin J.. |
| This study describes organizational structure, functions, and facilities of forestry cooperatives in the United States. It evaluates their economic performance and explores current problem areas and potentials for future development. Cooperative organization provides woodland owners professional forestry assistance, in terms of forest management, marketing, and educational activities. Some cooperatives consistently provide these services at less than prevailing rates and obtain higher than average stumpage prices on a local basis. In addition, forestry cooperatives have the potential to play a great role in marketing alternative forest products, such as wood for energy. Woodland-owner organizations have a wide range of sizes, business activities, types of... |
| Tipo: Report |
Palavras-chave: Forestry; Cooperatives; Forestry cooperatives; Timber; Woodland; Forest owner; Rural development; Agribusiness. |
| Ano: 1982 |
URL: http://purl.umn.edu/52031 |
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| Registros recuperados: 91 | |
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