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| Galdos,Marcelo Valadares; De Maria,Isabella Clerici; Camargo,Otávio Antonio de; Dechen,Sonia Carmela Falci. |
| The use of sewage sludge in agricultural soils as a macro and micronutrient source and as a soil conditioner has been one of the alternatives for its disposal. However, sewage sludge contains trace metals, which are potential sources of pollution. The goal of this study was to evaluate the effect of sewage sludge application on surface water contamination through runoff when it was applied in a soil cultivated with corn. The effect of sludge application on the concentration and load of copper, nickel and zinc and the volume of runoff water and sediment were evaluated. The experiment was set up in plots used to study erosion losses in Campinas, Sao Paulo State, Brazil. The soil is a clayey Rhodic Hapludox. Three treatments were studied: no sewage sludge,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cu; Ni; Zn; Erosion; Sediment. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000300012 |
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| Cardoso,Terezinha de Fátima; Cavalett,Otávio; Chagas,Mateus Ferreira; Morais,Edvaldo Rodrigo de; Carvalho,João Luís Nunes; Franco,Henrique Coutinho Junqueira; Galdos,Marcelo Valadares; Scarpare,Fábio Vale; Braunbeck,Oscar Antonio; Cortez,Luis Augusto Barbosa; Bonomi,Antonio. |
| Mechanized sugarcane (Saccharum spp.) harvest without burning has been increasingly adopted in Brazil, increasing trash availability on the field. This study aims at showing the importance of using an integrated framework tool to assess technical and economic impacts of integral harvesting and baling trash recovery strategies and different recovery rates as well as its implications in the sugarcane production, transport and processing stages. Trash recovery using baling system presents higher costs per unit of mass of recovered trash in comparison to system in which trash is harvested and transported with sugarcane stalks (integral harvesting system). However, the integrated agricultural and industrial assessment showed that recovering trash using baling... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000500010 |
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| Cerri,Carlos Clemente; Maia,Stoecio Malta Ferreira; Galdos,Marcelo Valadares; Cerri,Carlos Eduardo Pellegrino; Feigl,Brigitte Josefine; Bernoux,Martial. |
| Data from the 1990-1994 period presented in the "Brazil's Initial National Communication" document indicated that the country is one of the top world greenhouse gas (GHG) emitters. A large majority of Brazil's GHG emissions come from deforestation mainly of the Amazon biome for agriculture and livestock land uses. This unique inventory is now out of date. Thus, the aims of this review were (i) to update estimates of the GHG emissions for the Brazilian territory, (ii) to estimate the sinks to provide calculations of the GHG net emissions for the 1990-2005 period, (iii) to calculate the actual and estimate shares of agricultural and livestock activities, and (iv) to discuss in light of the new figures and patterns the best mitigation options for Brazil.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: CO2-equivalent (CO2-eq); Soil; Inventory; Land use change and forestry. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600017 |
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| Cerri,Carlos Clemente; Bernoux,Martial; Maia,Stoecio Malta Ferreira; Cerri,Carlos Eduardo Pellegrino; Costa Junior,Ciniro; Feigl,Brigitte Josefine; Frazão,Leidivan Almeida; Mello,Francisco Fujita de Castro; Galdos,Marcelo Valadares; Moreira,Cindy Silva; Carvalho,João Luis Nunes. |
| National inventories of anthropogenic greenhouse gas (GHG) emissions (implementation of the National Communications) are organized according to five main sectors, namely: Energy, Industrial Processes, Agriculture, Land-Use Change and Forestry (LUCF) and Waste. The objective of this study was to review and calculate the potential of greenhouse gas mitigation strategies in Brazil for the Agricultural and LUCF. The first step consisted in an analysis of Brazilian official and unofficial documents related to climate change and mitigation policies. Secondly, business as usual (BAU) and mitigation scenarios were elaborated for the 2010-2020 timeframe, and calculations of the corresponding associated GHG emissions and removals were performed. Additionally, two... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: IPCC; EX-ACT; Emission reduction; Carbon fixation. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100015 |
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