The purpose of this work is to verify the existence of possible tradeoffs between policies direct to reduce the emissions of greenhouse gases (GHGs) with the ones direct to foster the development of the Brazilian Amazon Region, which is one of the poorest in the country. In order to achieve this goal, this paper uses an interregional input-output (I-O) model, estimated for the Brazilian economy for the year of 2004. The I-O model is used to make a comparison between the economical and the environmental relevance of each sector in the economies of the Amazon region and the rest of Brazil. This study considers the greenhouse gases emissions not only from the economic activities by itself, but, also for the more important factor of the land-use changes. This is a fact of most importance, given that in 2005, about 60% of the Brazilian GHGs emissions were due to the land-use change in its different biomes. Moreover, in the Brazilian Amazon region, especially in the last decades, the deforestation was linked mainly to economic factors than to policies conducted by the government. The results show that the sectors with the greatest importance in terms of emissions are cattle and soybean production. Also, they are also the most prominent for the region's economic development. This poses a dilemma that needs to be faced not only by Brazil, but also by the developed nations, as the burden of the reduction in the greenhouse gases emission in the Brazilian Amazon region cannot be only put on the poor population of the region!
The purpose of this work is to verify the existence of possible tradeoffs between policies direct to reduce the emissions of greenhouse gases (GHGs) with the ones direct to foster the development of the Brazilian Amazon Region, considering its economic relations with the rest of the country and the international markets. In order to achieve this goal, this paper uses an interregional input-output (I-O) model, estimated for the Brazilian economy for the year of 2004. The I-O model is used to make a comparison between the economical and the environmental relevance of each sector in the Amazon region and the rest of Brazil. This study considers the greenhouse gases emissions not only from the economic activities by itself, but, also for the more important factor of the land-use changes. This is a fact of most importance, given that in 2005, about 60% of the Brazilian GHGs emissions were due to the land-use change in its different biomes. Moreover, in the Brazilian Amazon region, especially in the last decades, the deforestation was linked mainly to economic factors than to policies conducted by the government. The results show that the sectors with the greatest importance in terms of emissions are cattle and soybean production. Also, they are also the most prominent for the region's economic development. This poses a dilemma that needs to be faced not only by Brazil, but also by the developed nations, as the burden of the reduction in the greenhouse gases emission in the Brazilian Amazon region cannot be only put on the poor population of the region! Resumo O objetivo do presente trabalho é verificar a existência de possíveis impasses entre políticas que visem à redução das emissões de gases do efeito estufa e outras que objetivem o desenvolvimento da Região Amazônica, considerando suas relações econômicas com o resto do país e com os mercados internacionais. De modo a atingir esse propósito, o artigo emprega um modelo de insumo-produto interregional, estimado para a economia brasileira referente ao ano de 2004. O modelo é empregado para se realizar uma comparação entre as relevâncias econômicas e ambientais de cada setor da região Amazônica e do resto do Brasil. O estudo considera os gases do efeito estufa decorrentes não somente das atividades econômicas por si só, mas também da mudança de uso da terra. Trata-se de um ponto de grande importância, uma vez que em 2005 aproximadamente 60% das emissões brasileiras de gases do efeito estufa foram devidas à mudança de uso da terra em seus diversos biomas. Ademais, tem-se que na Amazônia, especialmente nas últimas décadas, o desmatamento esteve relacionado mais a fatores econômicos do que a políticas governamentais. Os resultados mostram que os setores mais importantes em termos de emissões são os de gado bovino e de soja, os quais também se mostram proeminentes para o desenvolvimento econômico da região. Impõe-se, assim, um dilema que deve ser enfrentado não apenas pelo Brasil, mas também pelos países desenvolvidos, uma vez que o ônus da redução das emissões de...
When working with agricultural mobile aggregate, the traction force of equipment and the speed of the real movement vary due to actual terrain irregularities, appearing also vibration of the gears axes and of the tractor chassis. Starting from these considerations, the paper presents results of experimental tests to move on agricultural land of a aggregate consists of a U-650M tractor and of a trees vineyard attachment RPV-2, on the push force of the attachment on the gear-shift bar to the tractor, traction force, vibration acceleration in three points on the tractor and tractor skidding for three different speeds of travel. It shall, also the testing equipment and how to catch the gage for acquisition the necessary data records. Using known relations in the study of the dynamics of the mobile aggregates, was achieved a modelling program of the traction parameters, in MathCad program, with which help were determined and set graphic the variations of the push force on the gear-shift bar, the traction force and the vibration acceleration to the steering wheel of the tractor. Based on experimental results obtained, the calculation program was checked and improved. The results presented in the paper are of interest to specialists in the study of the dynamic agricultural mobile aggregate, and the modelling program developed can be used to determine the parameters for the traction and for other types of aggregates to the movement on land with other features than used and tested.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.