Dinamica Do Carbono Do Solo No Agrossistema Cana De Acucar

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Dinamica da materia organica do solo no agrossistema cana-de-acucar

Author : C. C. Cerri
Publisher :
ISBN 13 :
Total Pages : 197 pages
Book Rating : 4.:/5 (78 download)

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Book Synopsis Dinamica da materia organica do solo no agrossistema cana-de-acucar by : C. C. Cerri

Download or read book Dinamica da materia organica do solo no agrossistema cana-de-acucar written by C. C. Cerri and published by . This book was released on 1986 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estudos sobre a dinamica da materia organica, em solos cultivados com cana-de-acucar, foram conduzidos em Piracicaba (SP). Nesta regiao, foram encontradas, em um Latossolo Vermelho amarelo, duas areas cultivadas exclusivamente com cana-de-acucar (uma durante doze anos e outra durante cinquenta anos) proximas ao mesmo solo coberto com floresta tropical. Nestas condicoes o ... e um tracador ideal para estudar a evolucao da materia organica do solo. A cana-de-acucar e uma planta C4 com alto conteudo em ... enquanto que a vegetacao de floresta (plantas C3) e a materia organica desenvolvida a partir desta vegetacao tem um valor inferior em ... Os principais resultados analiticos estao apresentados na Tabela. Esta Tabela mostra que nos primeiros vinte centimetros do solo o total de carbono organico decresce com o tempo de cultivo. As medidas de 13C mostraram que o carbono derivado da cana-de-acucar (Cdfc) aumenta com o tempo de cultivo enquanto que o carbono do solo da floresta (Cdff) diminui. A mineralizacao do carbono da floresta inicial e rapida durante os primeiros anos.

Dinâmica do carbono do solo no agrossistema cana-de-açúcar

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (691 download)

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Book Synopsis Dinâmica do carbono do solo no agrossistema cana-de-açúcar by :

Download or read book Dinâmica do carbono do solo no agrossistema cana-de-açúcar written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: No contexto da atual busca por alternativas ao consumo de combustíveis fósseis, a cultura da cana-de-açúcar tem sido apontada como uma das mais viáveis fontes de combustível renovável a partir da biomassa. A tradicional colheita manual, feita após a queima da palhada para facilitar o corte e o transporte, vem sendo substituída pela colheita mecanizada, sem queima, por razões econômicas, legais e ambientais. Sabe-se que a manutenção da palhada sobre o solo influencia a dinâmica de água, nutrientes e matéria orgânica do solo, mas seus efeitos ainda não são suficientemente conhecidos, principalmente no longo prazo. O objetivo esta pesquisa é simular, através de modelagem matemática, a dinâmica do carbono do solo no agrossistema canade- açúcar. Medidas no campo foram efetuadas em uma das áreas a mais tempo sob cultivo de cana-de-açúcar no Brasil, localizada nas terras da Usina São Martinho, em Pradópolis, São Paulo. Foram analisadas duas cronossequências em talhões reformados e plantados com cana há 2, 4, 6 e 8 anos, com e sem queima pré-colheita, em áreas com histórico de cultivo de cana-de-açúcar por cerca de 50 anos. Os efeitos da queima e da manutenção da palhada sobre o carbono total, carbono da matéria orgânica particulada e carbono da biomassa microbiana foram avaliados. As determinações de carbono da biomassa microbiana e da matéria orgânica particulada mostraramse mais sensíveis à mudança de manejo da palhada do que o carbono total. A área com maior tempo de adoção do sistema de manejo sem queima, oito anos, na camada superficial, apresentou maiores teores de carbono total (30% maior), carbono da biomassa microbiana (2,5 vezes maior), e carbono da matéria orgânica particulada (3,8 vezes maior). O estoque de carbono total, corrigido para diferenças de densidade entre as áreas, foi maior nas áreas sem queima, principalmente na área com oito anos. A aplicação do modelo CENTURY, requereu adaptação para a dinâmica de decomposição da palhada de cana-de-açúcar. Para t.

Sugarcane ethanol

Author : Peter Zuurbier
Publisher : BRILL
ISBN 13 : 9086866522
Total Pages : 255 pages
Book Rating : 4.0/5 (868 download)

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Book Synopsis Sugarcane ethanol by : Peter Zuurbier

Download or read book Sugarcane ethanol written by Peter Zuurbier and published by BRILL. This book was released on 2023-08-28 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Climate change is a challenge facing human life. It will change mobility and asks for new energy solutions. Bioenergy has gained increased attention as an alternative to fossil fuels. Energy based on renewable sources may offer part of the solution. Bio ethanol based on sugar cane offers advantages to people, the environment and the economy. Not surprisingly, governments currently enact powerful incentives for the development and exploitation of bio ethanol. However, every inch we come closer to this achievement, evokes more scepticism. Many questions are raised relating to whether sugar cane is really a sustainable solution. Still much is unknown about the net release of carbon dioxide and what the impacts of sugar cane expansion are on green house gas emissions. This book looks at the scientific base of the debate on sugar cane bio ethanol. Authors from Europe, Brazil and the USA capture many aspects of what is known and address assumptions while not denying that still much is unknown. It covers impacts on climate change, land use, sustainability and market demands. This publication discusses public policy impacts, technology developments, the fuel-food dilemma and the millennium development goals. This makes this publication unique and extremely relevant for policymakers, scientists and the private energy sector worldwide."

Energy, Transport, & the Environment

Author : Oliver Inderwildi
Publisher : Springer Science & Business Media
ISBN 13 : 1447127161
Total Pages : 719 pages
Book Rating : 4.4/5 (471 download)

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Book Synopsis Energy, Transport, & the Environment by : Oliver Inderwildi

Download or read book Energy, Transport, & the Environment written by Oliver Inderwildi and published by Springer Science & Business Media. This book was released on 2012-03-04 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable mobility is a highly complex problem as it is affected by the interactions between socio-economic, environmental, technological and political issues. Energy, Transport, & the Environment: Addressing the Sustainable Mobility Paradigm brings together leading figures from business, academia and governments to address the challenges and opportunities involved in working towards sustainable mobility. Key thinkers and decision makers approach topics and debates including: · energy security and resource scarcity · greenhouse gas and pollutant emissions · urban planning, transport systems and their management · governance and finance of transformation · the threats of terrorism and climate change to our transport systems. Introduced by a preface from U.S. Secretary Steven Chu and an outline by the editors, Dr Oliver Inderwildi and Sir David King, Energy, Transport, & the Environment is divided into six sections. These sections address and explore the challenges and opportunities for energy supply, road transport, urban mobility, aviation, sea and rail, as well as finance and economics in transport. Possible solutions, ranging from alternative fuels to advanced urban planning and policy levers, will be examined in order to deepen the understanding of currently proposed solutions within the political realities of the dominating economic areas. The result of this detailed investigation is an integrated view of sustainable transport for both people and freight, making Energy, Transport, & the Environment key reading for researchers, decision makers and policy experts across the public and private sectors.

Sustainable Development of Biofuels in Latin America and the Caribbean

Author : Barry D. Solomon
Publisher : Springer Science & Business Media
ISBN 13 : 1461492750
Total Pages : 257 pages
Book Rating : 4.4/5 (614 download)

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Book Synopsis Sustainable Development of Biofuels in Latin America and the Caribbean by : Barry D. Solomon

Download or read book Sustainable Development of Biofuels in Latin America and the Caribbean written by Barry D. Solomon and published by Springer Science & Business Media. This book was released on 2013-10-30 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines recent developments in Latin American biofuel production. Taking “sustainable development” as a central theme, each chapter considers one country in the region and explores how biofuel production is evolving given concerns about food sovereignty, trade and other social issues. Environmental conservation, as well as an increasingly complex and globalized economic structure, Is also taken into account. The contributions to this volume critically explore the ways in which biofuel production in Latin America impact social, economic and environmental systems: the so-called “three pillars of sustainability". Numerous stakeholders, drawn from government, industry, civil society and academia have attempted to define “Sustainable Development” in the context of biofuel production and to operationalize it through a series of principles, criteria, and highly specific indicators. Nevertheless, it remains a fluid and contested concept with deep political and social ramifications, which each chapter explores in detail.

Efeito do manejo da palhada da cana-de-açúcar sobre a dinâmica da matéria orgânica e sua relação com os agregados do solo

Author : Marcos Antonio Vieira Ligo
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (559 download)

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Book Synopsis Efeito do manejo da palhada da cana-de-açúcar sobre a dinâmica da matéria orgânica e sua relação com os agregados do solo by : Marcos Antonio Vieira Ligo

Download or read book Efeito do manejo da palhada da cana-de-açúcar sobre a dinâmica da matéria orgânica e sua relação com os agregados do solo written by Marcos Antonio Vieira Ligo and published by . This book was released on 2003 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Há um consenso que a dinâmica dos agregados do solo exerce um forte controle na dinâmica de C orgânico, e que esta dinâmica é influenciada pelo manejo do solo e dos restos culturais dos agroecossistemas. O objetivo deste trabalho foi avaliar a distribuição dos agregados estáveis em água e a matéria orgânica associada aos agregados sob dois regimes de manejo da palhada de cana-de-açúcar. Amostras foram coletadas em réplicas, nas profundidades de 0-5, 5-10, 10-15 e 15-20 cm, num experimento com seis anos de duração estabelecido num Latossolo Vermelho distrófico, no município de Morro Agudo, Estado de São Paulo. O experimento em bloco consistiu de 2 tratamentos, com quatro repetições, que diferiram na forma de colheita da cana-de-açúcar: cana colhida manualmente com queima da palhada (CQ) e cana colhida mecanicamente sem queima da palhada (CC). Os agregados foram obtidos pelo peneiramento úmido e classificados em 7 classes de tamanho. Em cada classe de agregados foram avaliados os teores de C e N da matéria orgânica total, particulada (MOP) e associada às frações (silte+argila) A estabilidade dos agregados individuais pelo método turbidimétrico e a macroagregação também foram avaliados. Foi usada a abundância natural de 13 C para comparar a proporção de C derivado da planta C4 e da vegetação natural. A cana crua (CC) não aumentou o estoque da matéria orgânica do solo, em comparação com a cana queimada (CQ), na profundidade de 0-20 cm, num período de seis anos. A maior participação de macroagregados ocorreu na cana crua (CC), devido principalmente a uma maior participação da classe > 2 mm. Os teores de C e N total, C e N mi, C e N-MOP entre as classes de agregados não demonstraram uma organização hierárquica dos agregados. A participação de C proveniente da planta C4 nas diferentes classes de agregados não refletiu os índices de estabilidade de agregados medidos pelo método turbidimétrico. Os resultados de 'delta' 13 C nos manejos da palhada da cana-de-açúcar demonstraram que os microagregados apresentam uma taxa de ciclagem comparável ao dos macroagregados.

Estoques de carbono e agregados do solo cultivado com cana-de-açucar: efeito da palhada e do clima no centro-sul do Brasil

Author : Gábor Gyula Julius Szakács
Publisher :
ISBN 13 :
Total Pages : 105 pages
Book Rating : 4.:/5 (212 download)

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Book Synopsis Estoques de carbono e agregados do solo cultivado com cana-de-açucar: efeito da palhada e do clima no centro-sul do Brasil by : Gábor Gyula Julius Szakács

Download or read book Estoques de carbono e agregados do solo cultivado com cana-de-açucar: efeito da palhada e do clima no centro-sul do Brasil written by Gábor Gyula Julius Szakács and published by . This book was released on 2007 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Continuação) O 'delta'13C da fração de partículas livres ou agregados não estáveis em água de fluxo contínuo é menor em todas as profundidades, indicando que a matéria orgânica recente (C4) encontra-se no solo principalmente de forma agregada estável em água, evidenciando seu papel fundamental na estabilidade dos agregados. Constatou-se também, que quanto mais novo o macroagregado, maior o seu teor em carbono. Nos microagregados verificou- se o efeito contrário. Quanto mais velho o microagregado, maior o seu teor em carbono. Isso indica que o microagregado possui uma melhor proteção contra a decomposição de carbono, e também a capacidade de um aumento no teor de carbono, no decorrer do tempo, em virtude da assimilação de carbono mais novo. Conclui-se, que em termos de seqüestro de carbono de longa duração, é propício avaliar mecanismos de proteção do carbono recalcitrante dentro dos microagregados e estudar como técnicas agrícolas podem proteger melhor esta fração.

Acta Scientiarum

Author :
Publisher :
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.A/5 ( download)

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Book Synopsis Acta Scientiarum by :

Download or read book Acta Scientiarum written by and published by . This book was released on 2003 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Ecology of Trees in the Tropical Rain Forest

Author : I. M. Turner
Publisher : Cambridge University Press
ISBN 13 : 113942887X
Total Pages : 314 pages
Book Rating : 4.1/5 (394 download)

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Book Synopsis The Ecology of Trees in the Tropical Rain Forest by : I. M. Turner

Download or read book The Ecology of Trees in the Tropical Rain Forest written by I. M. Turner and published by Cambridge University Press. This book was released on 2001-07-05 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our knowledge of the ecology of tropical rain-forest trees is limited, yet a good understanding of the trees is essential to unravelling the workings of the forest itself. This book aims to summarise contemporary understanding of the ecology of tropical rain-forest trees, with particular emphasis on comparative ecology.

Agriculture and Industry in Brazil

Author : Albert Fishlow
Publisher : Columbia University Press
ISBN 13 : 0231549520
Total Pages : 308 pages
Book Rating : 4.2/5 (315 download)

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Book Synopsis Agriculture and Industry in Brazil by : Albert Fishlow

Download or read book Agriculture and Industry in Brazil written by Albert Fishlow and published by Columbia University Press. This book was released on 2020-08-04 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agriculture and Industry in Brazil is a study of the economics of Brazilian agriculture and industry, with a special focus on the importance of innovation to productivity growth. Albert Fishlow and José Eustáquio Ribeiro Vieira Filho examine technological change in Brazil, highlighting the role of public policy in building institutions and creating an innovation-oriented environment. Fishlow and Vieira Filho tackle the theme of innovation from various angles. They contrast the relationship between state involvement and the private sector in key parts of the Brazilian economy and compare agricultural expansion with growth in the oil and aviation sectors. Fishlow and Vieira Filho argue that modern agriculture is a knowledge-intensive industry and its success in Brazil stems from public institution building. They demonstrate how research has played a key role in productivity growth, showing how prudent innovation policies can leverage knowledge not only within a particular company but also across whole sectors of the economy. The book discusses whether and how Brazil can serve as a model for other middle-income countries eager to achieve higher growth and a more egalitarian distribution of income. An important contribution to comparative, international, and development economics, Agriculture and Industry in Brazil shows how the public success in agriculture became a prototype for advance elsewhere.

MetaWin

Author : Michael S. Rosenberg
Publisher :
ISBN 13 : 9780878937738
Total Pages : 65 pages
Book Rating : 4.9/5 (377 download)

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Book Synopsis MetaWin by : Michael S. Rosenberg

Download or read book MetaWin written by Michael S. Rosenberg and published by . This book was released on 1997 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Micronutrients in Plant Physiology

Author : Ernest A. Kirkby
Publisher :
ISBN 13 : 9780853101796
Total Pages : 52 pages
Book Rating : 4.1/5 (17 download)

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Book Synopsis Micronutrients in Plant Physiology by : Ernest A. Kirkby

Download or read book Micronutrients in Plant Physiology written by Ernest A. Kirkby and published by . This book was released on 2004 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Principles of Soil Conservation and Management

Author : Humberto Blanco-Canqui
Publisher : Springer Science & Business Media
ISBN 13 : 1402087098
Total Pages : 617 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Principles of Soil Conservation and Management by : Humberto Blanco-Canqui

Download or read book Principles of Soil Conservation and Management written by Humberto Blanco-Canqui and published by Springer Science & Business Media. This book was released on 2008-09-16 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Principles of Soil Management and Conservation” comprehensively reviews the state-of-knowledge on soil erosion and management. It discusses in detail soil conservation topics in relation to soil productivity, environment quality, and agronomic production. It addresses the implications of soil erosion with emphasis on global hotspots and synthesizes available from developed and developing countries. It also critically reviews information on no-till management, organic farming, crop residue management for industrial uses, conservation buffers (e.g., grass buffers, agroforestry systems), and the problem of hypoxia in the Gulf of Mexico and in other regions. This book uniquely addresses the global issues including carbon sequestration, net emissions of CO2, and erosion as a sink or source of C under different scenarios of soil management. It also deliberates the implications of the projected global warming on soil erosion and vice versa. The concern about global food security in relation to soil erosion and strategies for confronting the remaining problems in soil management and conservation are specifically addressed. This volume is suitable for both undergraduate and graduate students interested in understanding the principles of soil conservation and management. The book is also useful for practitioners, extension agents, soil conservationists, and policymakers as an important reference material.

This View of Life

Author : David Sloan Wilson
Publisher : Vintage
ISBN 13 : 1101870214
Total Pages : 304 pages
Book Rating : 4.1/5 (18 download)

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Book Synopsis This View of Life by : David Sloan Wilson

Download or read book This View of Life written by David Sloan Wilson and published by Vintage. This book was released on 2019-02-26 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is widely understood that Charles Darwin’s theory of evolution completely revolutionized the study of biology. Yet, according to David Sloan Wilson, the Darwinian revolution won’t be truly complete until it is applied more broadly—to everything associated with the words “human,” “culture,” and “policy.” In a series of engaging and insightful examples—from the breeding of hens to the timing of cataract surgeries to the organization of an automobile plant—Wilson shows how an evolutionary worldview provides a practical tool kit for understanding not only genetic evolution but also the fast-paced changes that are having an impact on our world and ourselves. What emerges is an incredibly empowering argument: If we can become wise managers of evolutionary processes, we can solve the problems of our age at all scales—from the efficacy of our groups to our well-being as individuals to our stewardship of the planet Earth.

Soil Management for Sustainability

Author : R. Lal
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Soil Management for Sustainability by : R. Lal

Download or read book Soil Management for Sustainability written by R. Lal and published by . This book was released on 1991 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book manuscripts presented originally at a World Association of Soil and Water Conservation conference held in 1989 are collected. Topics include basic processes (e.g. soil structure, soil erosion, soil compaction); management options (e.g. conservation tillage); policy issues and priorities

Demand Driven Strategic Planning

Author : Marcos Fava Neves
Publisher :
ISBN 13 : 9781138144040
Total Pages : 180 pages
Book Rating : 4.1/5 (44 download)

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Book Synopsis Demand Driven Strategic Planning by : Marcos Fava Neves

Download or read book Demand Driven Strategic Planning written by Marcos Fava Neves and published by . This book was released on 2016-04-21 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers students and practitioners alike an integrated approach to strategic planning for companies. Marcos Fava Neves presents a new and unique perspective on this critical topic based on three main points: strongly demand-driven decisions that bridge the gap between long- and short-term strategy; a vision of a company as an integrated network, full of relationships that deserve consideration during the planning process; and the introduction of 'collective-action' thinking, which raises the prospect for cooperation between competitors. With this clear, comprehensive framework for strategic planning, companies can be sure to navigate today's complex environment and enhance their prospects of success.

Methods of Soil Analysis, Part 4

Author : Jacob H. Dane
Publisher : John Wiley & Sons
ISBN 13 : 089118841X
Total Pages : 1744 pages
Book Rating : 4.8/5 (911 download)

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Book Synopsis Methods of Soil Analysis, Part 4 by : Jacob H. Dane

Download or read book Methods of Soil Analysis, Part 4 written by Jacob H. Dane and published by John Wiley & Sons. This book was released on 2020-05-27 with total page 1744 pages. Available in PDF, EPUB and Kindle. Book excerpt: The best single reference for both the theory and practice of soil physical measurements, Methods, Part 4 adopts a more hierarchical approach to allow readers to easily find their specific topic or measurement of interest. As such it is divided into eight main chapters on soil sampling and statistics, the solid, solution, and gas phases, soil heat, solute transport, multi-fluid flow, and erosion. More than 100 world experts contribute detailed sections.