Socioeconomic and environmental effects from sugarcane expansion in to the Pontal do Paranapanema region (original) (raw)
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The sustainability of ethanol production from sugarcane
Energy Policy, 2008
The rapid expansion of ethanol production from sugarcane in Brazil has raised a number of questions regarding its negative consequences and sustainability. Positive impacts are the elimination of lead compounds from gasoline and the reduction of noxious emissions. There is also the reduction of CO 2 emissions, since sugarcane ethanol requires only a small amount of fossil fuels for its production, being thus a renewable fuel. These positive impacts are particularly noticeable in the air quality improvement of metropolitan areas but also in rural areas where mechanized harvesting of green cane is being introduced, eliminating the burning of sugarcane. Negative impacts such as future large-scale ethanol production from sugarcane might lead to the destruction or damage of high-biodiversity areas, deforestation, degradation or damaging of soils through the use of chemicals and soil decarbonization, water resources contamination or depletion, competition between food and fuel production decreasing food security and a worsening of labor conditions on the fields. These questions are discussed here, with the purpose of clarifying the sustainability aspects of ethanol production from sugarcane mainly in São Paulo State, where more than 60% of Brazil's sugarcane plantations are located and are responsible for 62% of ethanol production.
This thesis presents results from a study of socioeconomic and climate effects connected to a sugarcane ethanol expansion scenario in the Pontal do Paranapanema region, São Paulo state, Brazil. Sugarcane ethanol production is expected to grow in the São Paulo state. Pontal do Paranapanema is the only region in the state where a large scale sugarcane expansion can take place and this expansion will likely affect the rural family farmers in the region. There is concern that without guidelines the expansion might affect income growth in a negative way for the family farmers living in the area. Two models were created, one for calculating income growth for the family farmers when introducing a combined sugarcane and milk production system. The other model calculated energy and emissions from a sugarcane expansion and the introduced production system. The model analyses indicate that income could more than double for family farmers if a combined sugarcane and milk production system is introduced. At the same time, the global emissions of greenhouse gases could be significantly reduced if the ethanol from such production replaced gasoline used for transport in EU.
Chemical engineering transactions, 2018
Despite their advantages when replacing fossil fuels, biofuels have faced some concerns related to their expansion within the so-called “food vs. bioenergy” debate. This debate relies on the premise that the use of food crops and/or the increase of land use for bioenergy production would affect food availability and price. Nevertheless, it is worth to mention that livestock production is the largest anthropic use of land resources worldwide. In Brazil, livestock production mainly consists of extensive management with low technology level, which results in a low average productivity. The intensification of this system would release pasture areas to expand cropland for biofuels production. In this way, the integration of sugarcane ethanol and livestock production would allow taking advantage of the synergies between both systems; for instance, using sugarcane agroindustrial residues as animal feed ingredients in feedlot systems. In addition, ethanol production from lignocellulosic fee...
Biofuels Bioproducts & Biorefining-biofpr, 2007
Brazilian agriculture is characteristically dynamic; land and production resources have a skewed ownership distribution; and agricultural production is essential for small holders of rural poor regions. Also, the main agricultural land use is composed of pastures where extensive livestock production prevails. Because of increasing demand Brazil is expected to expand its sugarcane-based ethanol production. Addressing concerns about social and environmental impacts of such an expansion requires careful consideration of the complexity of Brazilian agriculture in general and specific local conditions in particular. This perspective outlines an expansion model for sugarcane ethanol production that is sensitive to socioeconomic and environmental concerns. Through integration with the prevailing land use, the model avoids the usual displacement of extensive livestock production to remote regions, causing leakage effects with deforestation and promotes milk and beef cattle intensification and investment opportunities for local society. The expansion model is feasible at current market conditions and should have good prospects for complying with sustainability criteria within various certification schemes presently under development. A case study, developed in the Pontal do Paranapanema region (state of São Paulo, Brazil) illustrates the model in agrarian reform settlements. © 2007 Society of Chemical Industry and John Wiley & Sons, Ltd
Land use dynamics and sugarcane production
Contributions to climate change mitigation and the environment edited by Peter Zuurbier Jos van de Vooren A vision proposed by 8 Sugarcane ethanol Chapter 4 Mitigation of GHG emissions using sugarcane bioethanol Sugarcane ethanol Executive summary over previous productive areas (meaning new land has been incorporated into agricultural production, which might be attributed to the conversion of forest to agriculture or to the use of previously idle areas). Total agricultural area growth-the sum of all crops, including sugarcane, and pastures-in the period was around 3.3 million ha. 5. Projections indicate that harvested sugarcane area in Brazil will reach 11.7 million ha and other crops 43.8 million ha in 2018, while pasture area will decrease around 3 million ha. The total land area in Brazil is 851.196.500 ha. 6. The expansion of crops, except sugarcane, and pasture land is taking place despite of the sugarcane expansion. This is important because it reinforces that, even recognizing that sugarcane expansion contributes to the displacement of other crops and pasture, there is no evidence that deforestation caused by indirect land use effect is a consequence of sugarcane expansion. 7. Sugarcane ethanol from Brazil does comply with the targets of greenhouse gases (GHG) reduction. 8. The GHG emissions and mitigation from fuel ethanol production/use in Brazil are evaluated for the 2006/07 season, and for two scenarios for 2020: the 2020 Electricity Scenario (already being implemented) aiming at increasing electricity surplus with cane biomass residues; and the 2020 Ethanol Scenario using the residues for ethanol production. Emissions are evaluated from cane production to ethanol end use; process data was obtained from 40 mills in Brazilian Centre South. Energy ratios grow from 9.4 (2006) to 12.1 (2020, the two Scenarios); and the corresponding GHG mitigation increase from 79% (2006) to 86% (2020) if only the ethanol is considered. With co-products (electricity) it would be 120%. LUC derived GHG emissions were negative in the period 2002-2008, and very little impact (if any) is expected for 2008-2020, due mostly to the large availability of land with poor carbon stocks. Although indirect land use changes (ILUC) impacts cannot be adequately evaluated today, specific conditions in Brazil may lead to significant increases in ethanol production without positive ILUC emissions. 9. Brazil has achieved very high levels of productivity (on average 7.000 litres of ethanol/ha and 6,1 MWhr of energy/ha), despite its lower inputs of fertilizers and agrochemicals compared with other biofuels, while reducing significantly the emissions of greenhouse gases. The ending of sugarcane burning in 2014 is a good example of improving existing practices. 10. Production of ethanol in Brazil, which has been rising fast, is expected to reach 70 billion litres by the end of 2008. Approximately 80% of this volume will be used in the transport sector while the rest will go into alcoholic beverages or will be either used for industrial purposes (solvent, disinfectant, chemical feedstock, etc.). 11. When evaluating key drivers for ethanol demand, energy security and climate change are considered to be the most important objectives reported by nearly all countries that engage in bioenergy development activities. A next factor is the growth in demand for transport fuels. A third factor is vehicle technologies that already enable large scale use of ethanol.
Expansion of Sugarcane Ethanol Production in Brazil: Environmental and Social Challenges
Ecological Applications, 2008
Several geopolitical factors, aggravated by worries of global warming, have been fueling the search for and production of renewable energy worldwide for the past few years. Such demand for renewable energy is likely to benefit the sugarcane ethanol industry in Brazil, not only because sugarcane ethanol has a positive energetic balance and relatively low production costs, but also because Brazilian ethanol has been successfully produced and used as biofuel in the country since the 1970s. However, environmental and social impacts associated with ethanol production in Brazil can become important obstacles to sustainable biofuel production worldwide. Atmospheric pollution from burning of sugarcane for harvesting, degradation of soils and aquatic systems, and the exploitation of cane cutters are among the issues that deserve immediate attention from the Brazilian government and international societies. The expansion of sugarcane crops to the areas presently cultivated for soybeans also represent an environmental threat, because it may increase deforestation pressure from soybean crops in the Amazon region. In this paper, we discuss environmental and social issues linked to the expansion of sugarcane in Brazil for ethanol production, and we provide recommendations to help policy makers and the Brazilian government establish new initiatives to produce a code for ethanol production that is environmentally sustainable and economically fair. Recommendations include proper planning and environmental risk assessments for the expansion of sugarcane to new regions such as Central Brazil, improvement of land use practices to reduce soil erosion and nitrogen pollution, proper protection of streams and riparian ecosystems, banning of sugarcane burning practices, and fair working conditions for sugarcane cutters. We also support the creation of a more constructive approach for international stakeholders and trade organizations to promote sustainable development for biofuel production in developing countries such as Brazil. Finally, we support the inclusion of environmental values in the price of biofuels in order to discourage excessive replacement of natural ecosystems such as forests, wetlands, and pasture by bioenergy crops.
Renewable and Sustainable Energy Reviews, 2013
This study assesses the socioeconomic impacts in terms of value added, imports and employment of sugarcane-derived bioethanol production in Northeast (NE) Brazil. An extended interregional Input-Output (IO) model has been developed and is used to analyse three scenarios, all projected for 2020: a business-as-usual scenario (BaU) which projects current practices, and two scenarios that consider more efficient agricultural practices and processing efficiency (scenario A) and in addition an expansion of the sector into new areas (scenario B). By 2020 in all scenarios, value added and imports increase compared to the current situation. The value added by the sugarcane-ethanol sector in the NE region is 2.8 billion US$ in the BaU scenario, almost 4 billion US$ in scenario A, and 9.4 billion US$ in scenario B. The imports in the region will grow with 4% (BaU scenario), 38% (scenario A) and 262% (scenario B). This study shows that the large reduction of employment (114,000 jobs) due to the replacement of manual harvesting by mechanical harvesting can be offset by additional production and indirect effects. The total employment in the region by 2020 grows with 10% in scenario A (around 12,500 jobs) and 126% in scenario B (around 160,000 jobs). The indirect effects of sugarcane production in the NE are large in the rest of Brazil due to the import of inputs from these regions. The use of an extended interregional IO model can quantify direct and indirect socioeconomic effects at regional level and can provide insight in the linkages between regions. The application of the model to NE Brazil has demonstrated significant positive socioeconomic impacts that can be achieved when developing and expanding the sugarcane-ethanol sector in the region under the conditions studied here, not only for the NE region itself but also for the economy of the rest of Brazil.