Programa de Pós-graduação em Agronegócio
URI Permanente desta comunidade
Navegar
Navegando Programa de Pós-graduação em Agronegócio por Por Orientador "Barreira, Sybelle"
Agora exibindo 1 - 9 de 9
Resultados por página
Opções de Ordenação
Item Dinâmica de expansão da silvicultura no estado de Goiás(Universidade Federal de Goiás, 2019-03-12) Araújo, Lázaro Gabriel de Oliveira; Barreira, Sybelle; http://lattes.cnpq.br/8803862948788380; Barreira, Sybelle; Ferreira, Manuel Eduardo; Reis, Cristiane Aparecida FioravanteForestry, although it constitutes a strategic activity for the energy and transformation sector in the Brazilian economy, there are few efforts focused on the spatial modeling of the growth dynamics of planted forests, both locally and regionally. This study aims to know the spatial elements, as well as their degrees of influence on the conduction of the phenomenon of expansion of forestry in the state of Goiás, between 2000 and 2015. The work was divided in three parts: i) exploratory analysis, through a survey of spatially explicit variables directly linked to the conduction of the phenomenon; ii) elaboration and execution of the forestry expansion model for the state of Goiás between the years 2000 and 2015, using the Dinamica EGO platform; iii) construction of two prediction scenarios by 2030. The first scenario retains the weights of the variables according to the previously simulated expansion model; and the second one, reorders weights, seeking to induce greater allocative efficiency. The results show that the allocation of forest stands is strongly attracted to areas close to the road structure and to the consuming centers of wood products, such as refrigerators, bulk warehouses, and mining. Regarding the environmental characteristics, the occurrence of a great part of the plantations in areas with corrugated relief and profiling oriented to agriculture of medium technological level and low level of mechanization, besides the sprayed distribution in small areas, indicates that a considerable portion of producers opts for peripheral areas and little planning regarding productivity and quality of wood.Item Panorama dos 10 anos de vigência do código florestal brasileiro(Universidade Federal de Goiás, 2023-12-18) Araújo, Lorrainy da Costa Vieira; Barreira, Sybelle; http://lattes.cnpq.br/8803862948788380; Barreira, Sybelle; Cruz, José Elenilson; Pires, Patricia PereiraThe Brazilian Forest Code, Law No. 12.651/2012, turned 10 years old in 2022, and during this period, the federal entities drew up rules to regulate the state's need to deal with the themes of the Forest Code's chapters. The general objective of this study is to analyze the developments of Law No. 12.651/2012 in the states and the Federal District, and the specific objectives are to catalog the regulations of the federated entities related to the period of 10 years after the Forest Code came into force; to identify the normative acts of the states and the Federal District on the subject of the chapters of the law; to analyze the developments in the context of the sub-themes of the Rural Environmental Registry, Conservation Units, Fires and Deforestation; and, finally, to develop a dynamic platform. The research was carried out by collecting secondary data, so the methodological procedures began with an electronic search on the government websites of each federal entity, starting with the Union and searching state by state in alphabetical order; The information collected was entered into an Excel spreadsheet to catalog the data and create a database, so that, after completing the survey of normative acts, the results were presented using a Power BI dashboard, which is a dynamic platform, as well as maps in graphical formats. The results show that measures need to be taken to ensure that Law 12.651/2012 is applied effectively throughout the country, in order to guarantee the protection of native vegetation and the sustainable use of forests and other forms of native vegetation in Brazil.Item Análise multitemporal da silvicultura no estado de Goiás via sensoriamento remoto(Universidade Federal de Goiás, 2017-02-22) Cabral, Escleide Gomes; Ferreira, Manuel Eduardo; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4766027A0; Barreira, Sybelle; http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4763330T6; Barreira, Sybelle; Reis, Cristiane Fioravante; Souza, Cleonice BorgesForestry is booming in Brazil due to demand for forest products. However, despite the importance of planted forests, forestry in the state of Goiás has been little studied. One of the reasons for the absence of studies in the state is due to the lack of disaggregated data and the great pulverization of the plantations, making it difficult to survey them. This work aimed to know the areas with commercial forest plantations, through remote sensing in the years 2002 and 2013, through the mapping carried out by Probio and TerraClass Cerrado, respectively, and in 2015 by the mapping carried out in this work, to assist in the Planning and development of state forestry. Analyzing the production and the values collected with the forest products in Goiás, we observed that some products have been replaced over the years by others, such as charcoal by wood chips, as well as other products that have been increasing in the production, such as firewood, which in the year 2000 obtained a production of 679,755 m³ and obtained a value of 6.6 million Reals. In less than 15 years, its production increased to 4,357,778 m³ of firewood. When we looked at the 2002, 2013 and the mapping of this study, we realized that there were important advances in the planted areas, so that in 2002 there were just over 500 ha of forest planted in Goiás; In 2013, were approximately 153 thousand ha; And in 2015, the area of forestry was 162,516 ha. The mesoregions with the largest commercial forest plantations are in the South, East and North, and the South and the East are the largest producers of wood and timber in the state of Goiás. The spatial distribution of eucalyptus plantations in Goiás Characterized by plantations in small areas and by a non-vertical production of the producers, reflecting the potential of forestry activity in income generation in small and medium farms and that despite the methodological differences used in the mappings used, the results were close to the results found for the current landscape of the state of Goiás elaborated in this workItem Análise dos termos de ajustamento de conduta firmados pelo Ministério Público de Goiás em áreas de preservação permanente rurais na bacia do rio Meia Ponte(Universidade Federal de Goiás, 2021-12-14) Jordão, Luciana Ramos; Barreira, Sybelle; http://lattes.cnpq.br/8803862948788380; Barreira, Sybelle; Calil, Francine Neves; Zakia, Maria José Brito; Machado, Vilma de Fátima; Corcioli, GraciellaThis research analyses the results on damage recomposing in Permanent Preservation Areas located in cities that integrate the Meia Ponte River basin by verifying the Alternative Dispute Resolution Agreements (ADRs) in which Public Prosecutors take part. The research maps the judiciary districts and links them to environmental crimes committed between 2017 and 2019. After selecting five districts that would have their ADRs examined, it identifies the agreements that mentioned damages on Permanent Preservation Areas from 2014 to 2021. The agreements are read and described according to the research criteria. It identifies minimum patterns of content and validity considering existence, validity and efficacy criteria of contracts, and it’s interest in total repairing the damage caused to the environment. These criteria are systematically organized so that they can be user to analyze seven ADRs that were found during the research. The goal, during this step, is to examine if the agreements comply with minimum technical quality required by Brazilian Law. Also, it identifies five rural properties belonging to the ADRs participants in order to verify them by satellite images. These images permit temporal comparison of the areas and make it possible to see if there are Permanent Preservation Areas and Legal Reserved Areas that still have to be recomposed and the proposition on doing so according to the Rural-Environmental Registration. By qualitative analyses, the research concludes that the criteria stablished by Escada Ponteana are not sufficiently complied by the ADRs in which state Public Prosecutors take part. Important data on the parts, on the areas and on the obligations are not mentioned of forgotten. The restoration of the damaged areas was not verified in any of the rural properties analyzed. Public Prosecutors value documents over the reality of the areas and the possibility of complying with the ecological role. The way public officers deal with areas under Forest Code protection, even though it is easy to access data from the Rural Environmental Registry (CAR) and it is possible to use remote sensing techniques, is not efficient and uses TACs as instrument to oversee environmental damage.Item Plantio de eucalipto e o serviço ecossistêmico de captura e armazenamento de carbono(Universidade Federal de Goiás, 2022-02-22) Lacerda, Matheus Souza; Ferreira, Marcelo Dias Paes; http://lattes.cnpq.br/3436824386339415; Barreira, Sybelle; http://lattes.cnpq.br/8803862948788380; Barreira, Sybelle; Calil, Francine Neves; Ferreira, Jorge Luís SousaCommercial forest plantations are currently an important economic activity of Brazilian agribusiness, through technological, economic and social development, the sector has experienced considerable advances in the last few years. However, there is little information about the relationship of commercial forest plantations and ecosystem services approach. In this way, this analysis aimed to contribute to the environmental, social and economic debate through the principles of ecological economics, in this way, the analysis focused on the carbon sequestration service performed by a commercial forest plantation of eucalyptus, for this it was necessary to follow three fronts for research construction; I) quantification of the carbon stock and carbon equivalent of the plantation through a biophysical assessment carried out in the field, where information on volume, density, biomass, carbon allocation and carbon equivalent (CO2) of the area were collected. II) carried out the economic valuation of the carbon stock provided by the commercial forest plantation of eucalyptus, according to the social carbon cost (CSC), in which it is an important metric capable of translating the service of atmospheric carbon retention into monetary values, because in its construction there is a greater range of social, economic and climatic factors. III) Assessed the contribution of eucalyptus forest plantations on the emissions of the city of Goiânia, the analysis was made through the carbon balance data of the report of the System of Estimates of Emissions and Removals of Greenhouse Gases (SEEG) revealing the impact of planting mitigation and its importance to face the climate crisis underway across the planet. The quantification of carbon stock and carbon equivalent was 108.44 t/ha of carbon and 397.96 t/ha of carbon equivalent, the monetary economic valuation was 2,602.44 US$ per hectare, reaching 130,122.38 US$ for the entire planting according to carbon stock and US$ 9,550.98 per hectare reaching US$ 477,549.13 for the entire planting, according to the valuation of carbon equivalent, the analysis of the contribution of planting, verified a potential for mitigating emissions of the city of Goiânia of 0.90% of the municipality's total emissions in 2018, results that demonstrate the ability of eucalyptus forest plantations as a sink for atmospheric carbon and to offer society well-being, through the allocation service, however as an economic activity, forestry projects need to be deepened, developed and interacted with the ecosystem services they perform.Item Identificação de plantios florestais de interesse comercial em Goiás: classificação supervisionada de imagens multiespectrais(Universidade Federal de Goiás, 2022-02-24) Oliveira, Sabrina Gomes de; Barreira, Sybelle; http://lattes.cnpq.br/8803862948788380; Barreira, Sybelle; Calil, Francine Neves; Acerbi Júnior, Fausto WeimarGoiás is still at the beginning of the development process of its forestry sector, and a breakdown of the total area of each of the commercial species is necessary due to the state's potential to insert itself as a relevant forest figure in the country. Thus, the objective of this work was to identify and quantify the area of forests planted with Eucalyptus spp., Khaya spp. and Hevea spp. through supervised classification of Sentinel-2A images dated between 02 and 22 of august, 2021. The classification supervision resulted in the sampling of 820 polygons, these differentiated into nine classes of land use and cover. The global accuracy of the Random Forest model was 96.11%, in addition to a Kappa index of 95.26%. For area calculation, a predominance of Eucalyptus spp. (90,583 ha), but also a very significant portion of Hevea spp. (23,213 ha) individuals. Khaya spp. are still the minority in the state. The total area of planted forest in Goiás with the three specific genera is 115.094,65 hectares. There is, however, a deficit in forestry resources, a delay in terms of wood and energy needs, a fact that can be confirmed in contact with industries.Item Utilização de passivo ambiental como substrato para produção de mudas de Khaya lvorensis A. CHEV(Universidade Federal de Goiás, 2017-02-23) Silva Junior, Ademir Rodrigues; Barreira, Sybelle; lattes.cnpq.br/8803862948788380; Barreira, Sybelle; lattes.cnpq.br/8803862948788380; Calil, Francine Neves; Corciolli, GraciellaAfrican mahogany (Khaya ivorensis A. Chev) is a forest species that provides high quality wood and is an alternative to Brazilian mahogany (Swietenia macrophylla King). Little is known about its behavior if propagated in different substrates, and the present research has the objective of using an environmental liability from industrial activity of potato bark (Solanum tuberosum L.) to produce seedlings of African mahogany. The use of industrial and urban waste, produced in increasing amounts, has been feasible in numerous studies and its use is an alternative to its disposal in the environment. A substrate 1 (S1-compound (50%) and sand (50%)), substrate 2 (S2-organic compound (100%)) was used in the experiments. ), Substrate 3 (S3-commercial substrate) and substrate 4 (S4-sand (100%)), which were analyzed chemically before sowing at 30 and 120 days evaluating the macronutrients Carbon, Nitrogen, Phosphorus, Potassium, Calcium, Magnesium And Sulfur, micronutrients Boron, Iron, Manganese, Copper and Zinc, hydrogenation potential (pH), and physical (moisture). In the African mahogany seedlings in the field, height (H), diameter of colon (DC), fresh mass (MF), dry mass (DM) and foliar analysis (AF) were verified at 30, 75 and 120 days, in order to identify the Quality of the seedlings in the different treatments. Mahogany seeds presented germination of 62% in the laboratory, allowing to consider the storage period of at least five months and low quality of the batch under study. In the field, 59%, 64%, 60% and 60%, respectively, were obtained in S1, S2, S3 and S4, indicating that there was no great influence on germination in any of the substrates used. The first chemical analyzes of the treatments showed good nutritional loads, water retention capacity, pH close to those considered satisfactory. The C / N ratio was shown to be low in S1 and S2 at the beginning, and at 120 days in S3 o could evidence competition for the N available between the plants and the microorganisms of the substrate causing nutrient deficiency. The Dunn test for H, DC, MFT, MFR, MFA, MST, MSR, and MSA indicated larger averages and significant differences in S1 and S2 when compared to S3 and S4 evidencing the high efficacy of the organic compound in the production of African mahogany seedlings.Item O Sistema Nacional de Crédito Rural e os impactos para a recuperação florestal no Brasil(Universidade Federal de Goiás, 2021-02-24) Tejerina, Gabriela Rodrigues de Lima; Barreira, Sybelle; http://lattes.cnpq.br/8803862948788380; Barreira, Sybelle; Cruz, José Elenilson; Zakia, Maria José BritoClimate change is a global phenomenon resulting from the emission of greenhouse gases. In this context, Brazil signed the Paris Agreement in 2016, committing itself to reduce these emissions through its Nationally Determined Contributions (NDC): national targets that aims to mitigate the effects of climate change that must be met by 2030. Among these goals, Brazil committed itself, by 2030, to restore and reforest, for multiple uses, 12 million hectares of forests. Rural establishments may be fundamental for Brazil to achieve this objective, by promoting forest recovery in its areas, but they need public policies, such as rural credits, to make this action achieavable. In this sense, the objective of this study was to identify programs and characteristics of the beneficiaries who contracted financing for forest recovery under the National Agricultural Credit System (SNCR) for the period 2013-2019. The data were obtained from the Rural Credit Data Matrix (MDCR) of the Central Bank of Brazil, in order to determine which programs were accessed and the credit contractor gender and age group. The results showed that the majority of the beneficiaries of the credits for forest recovery were male (78.69%) and aged between 30 and 60 years. The credit programs accessed were the National Program for the Strengthening of Family Farming (Pronaf), the Program of Low Carbon Agriculture (Programa ABC) and the Financing Program in Support of Low Carbon Agriculture (FNO-ABC). These programs and their respective subprograms, focused on sustainability and the environment, were accessed by 21,574 contracts, totaling R$ 4.75 billion. These are low values, and not enough for Brazil to comply the goals of the Paris Agreement: restoring and reforesting. It is necessary to improve access and dissemination; update or create more economically attractive lines of finance; increase the resources made available for the SNCR; create and strengthen public Technical Assistance and Rural Extension (ATER) offices to act in accordance with the local reality and specificities of the beneficiary, especially if it is a woman or young person. MCDR needs to improve the data provided and be more transparent about the use of contracted credits.Item Diagnóstico da cadeia produtiva de sementes de espécies florestais nativas do cerrado, na região metropolitana de Goiânia(Universidade Federal de Goiás, 2017-02-22) Teles, Thiago Augusto Sampaio; Barreira, Sybelle; http://lattes.cnpq.br/8803862948788380; Reis , Cristiane Fioravante; Souza , Cleonice Borges de; Nascimento , Abadia dos Reis; Calil , Francine NevesThe present work had as objective to diagnose the productive chain of seeds of eight native species of the cerrado, in the metropolitan region of Goiânia. The implementation of Law 10.711 of 2003 aims to manage the seed production chain and creates the National System of Seeds and Seedlings (SNSM), in order to guarantee the identity and quality of the seeds sold. Together with this law, there is the Normative Instruction of MAPA No. 56/11 that establishes the accreditation of the forest seed collector, together with RENASEM and declaration of compliance with the MAPA, being an important legal contribution in the native seed production chain, as it brings with it The knowledge about the origin of the seeds collected and also the requirement on the quality of the seeds commercialized, attested by the analyzes carried out by laboratories accredited to MAPA. Visits were carried out in 28 nurseries and all showed noncompliance with the legislation that governs the seed and seed production chain. Most seedlings producers obtain their seeds through their own collection and perform inadequately not complying with the regulations that govern the sector. The quantity of seeds obtained only supplies the demand for its production, and there are only three nurseries that commercialize seeds, even so in a sporadic way. Analyzes carried out on eight native forest species of the cerrado did not present a significant difference in germination and seed moisture tests, presenting only difference in the weight of one thousand seeds, which does not present a comprehensive literature, but which is directly related to seed commercialization.