Properties and Management of Soils in the Tropics PDF Download
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Author: Pedro A. Sanchez
Publisher: Cambridge University Press
ISBN: 1107176050
Category : Business & Economics
Languages : en
Pages : 685
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Book Description
Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Author: Pedro A. Sanchez
Publisher: Cambridge University Press
ISBN: 1107176050
Category : Business & Economics
Languages : en
Pages : 685
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Book Description
Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Author: Carl F. Jordan
Publisher: Springer Science & Business Media
ISBN: 146124658X
Category : Science
Languages : en
Pages : 143
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Book Description
DEVELOPMENT AND DISTURBANCE IN AMAZON FORESTS Contrasting Impressions 6 2 The rain forests of the Amazon Basin cover approximately 5.8 x 10 km (Salati and Vose 1984). Flying over even just part of this basin, one gazes hour after hour upon this seemingly infinite blanket of green. The impression of immen sity is similar when viewed from the Amazon River itself, or from its tributar ies. From a hammock on the shaded deck of a riverboat, the immensity of the forest presents an incredible monotony as one view of the shoreline blends unnoticeably into another. From both perspectives, the overwhelming reaction to the sea of trees that stretches from horizon to horizon is a sense of the vastness of the rain forest. In September 1985, I got a different impression of the rain forest. Several students and I journeyed in a self-propelled car along the single-track railroad that stretches almost 1000 km from the Carajas iron ore mine in the rain forest of Para State, Brazil, all the way to Sao Luis on the coast (Fig. 1.1).
Author: Claudia Hernandez
Publisher:
ISBN: 9781911508823
Category : El Salvador
Languages : en
Pages : 352
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Book Description
A woman fights to keep her daughters safe in the wake of war and political trauma in Central/ Latin America.
Author: Malcolm F. Cairns
Publisher: Routledge
ISBN: 1317750187
Category : Nature
Languages : en
Pages : 1405
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Book Description
Shifting cultivation is one of the oldest forms of subsistence agriculture and is still practised by millions of poor people in the tropics. Typically it involves clearing land (often forest) for the growing of crops for a few years, and then moving on to new sites, leaving the earlier ground fallow to regain its soil fertility. This book brings together the best of science and farmer experimentation, vividly illustrating the enormous diversity of shifting cultivation systems as well as the power of human ingenuity. Some critics have tended to disparage shifting cultivation (sometimes called 'swidden cultivation' or 'slash-and-burn agriculture') as unsustainable due to its supposed role in deforestation and land degradation. However, the book shows that such indigenous practices, as they have evolved over time, can be highly adaptive to land and ecology. In contrast, 'scientific' agricultural solutions imposed from outside can be far more damaging to the environment and local communities. The book focuses on successful agricultural strategies of upland farmers, particularly in south and south-east Asia, and presents over 50 contributions by scholars from around the world and from various disciplines, including agricultural economics, ecology and anthropology. It is a sequel to the much praised "Voices from the Forest: Integrating Indigenous Knowledge into Sustainable Upland Farming" (RFF Press, 2007), but all chapters are completely new and there is a greater emphasis on the contemporary challenges of climate change and biodiversity conservation.
Author: Cheryl Ann Palm
Publisher: Columbia University Press
ISBN: 9780231134507
Category : Computers
Languages : en
Pages : 496
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Book Description
The Alternatives to Slash and Burn (ASB) consortium was formed in 1992 by a group of concerned national and international research institutions to address the global and local issues associated with this form of agriculture. With contributions from scientists, economists, ecologists, and anthropologists, this book synthesizes the first decade of ASB's work. It assesses the environmental, economic, and social impact of deforestation and the needs of small-scale farmers who rely on slash-and-burn agriculture for their livelihood.
Author: Debojyoti Das
Publisher: Anthem Press
ISBN: 1783087765
Category : Social Science
Languages : en
Pages : 274
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Book Description
The Politics of Swidden Farming offers a new explanation for the changes taking place in swidden farming practised in the highlands of eastern India through an ethnographic case study. The book traces the story of agroecological change and state intervention to colonial times, and helps understand contemporary agrarian change by contextualizing farming not just in terms of the science and technology of agriculture or conservation and biodiversity but also in terms of technologies of rule. The Politics of Swidden Farming adds a new dimension to the underdeveloped literature on shifting cultivation in South Asia by focusing on the social ecology of farming and agrarian change in the hills. It provides a comparative viewpoint to state-centred and donor-driven development in the frontier region by bringing in different actors and institutions that become the actants and agents of social change.
Author: Malcolm Cairns
Publisher: Taylor & Francis
ISBN: 113652228X
Category : Nature
Languages : en
Pages : 853
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Book Description
This handbook of locally based agricultural practices brings together the best of science and farmer experimentation, vividly illustrating the enormous diversity of shifting cultivation systems as well as the power of human ingenuity. Environmentalists have tended to disparage shifting cultivation (sometimes called 'swidden cultivation' or 'slash-and-burn agriculture') as unsustainable due to its supposed role in deforestation and land degradation. However, a growing body of evidence indicates that such indigenous practices, as they have evolved over time, can be highly adaptive to land and ecology. In contrast, 'scientific' agricultural solutions imposed from outside can be far more damaging to the environment. Moreover, these external solutions often fail to recognize the extent to which an agricultural system supports a way of life along with a society's food needs. They do not recognize the degree to which the sustainability of a culture is intimately associated with the sustainability and continuity of its agricultural system. Unprecedented in ambition and scope, Voices from the Forest focuses on successful agricultural strategies of upland farmers. More than 100 scholars from 19 countries--including agricultural economists, ecologists, and anthropologists--collaborated in the analysis of different fallow management typologies, working in conjunction with hundreds of indigenous farmers of different cultures and a broad range of climates, crops, and soil conditions. By sharing this knowledge--and combining it with new scientific and technical advances--the authors hope to make indigenous practices and experience more widely accessible and better understood, not only by researchers and development practitioners, but by other communities of farmers around the world.
Author: Marcel Mazoyer
Publisher: NYU Press
ISBN: 1583674918
Category : History
Languages : en
Pages : 529
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Book Description
Only once we understand the long history of human efforts to draw sustenance from the land can we grasp the nature of the crisis that faces humankind today, as hundreds of millions of people are faced with famine or flight from the land. From Neolithic times through the earliest civilizations of the ancient Near East, in savannahs, river valleys and the terraces created by the Incas in the Andean mountains, an increasing range of agricultural techniques have developed in response to very different conditions. These developments are recounted in this book, with detailed attention to the ways in which plants, animals, soil, climate, and society have interacted. Mazoyer and Roudart’s A History of World Agriculture is a path-breaking and panoramic work, beginning with the emergence of agriculture after thousands of years in which human societies had depended on hunting and gathering, showing how agricultural techniques developed in the different regions of the world, and how this extraordinary wealth of knowledge, tradition and natural variety is endangered today by global capitialism, as it forces the unequal agrarian heritages of the world to conform to the norms of profit. During the twentieth century, mechanization, motorization and specialization have brought to a halt the pattern of cultural and environmental responses that characterized the global history of agriculture until then. Today a small number of corporations have the capacity to impose the farming methods on the planet that they find most profitable. Mazoyer and Roudart propose an alternative global strategy that can safegaurd the economies of the poor countries, reinvigorate the global economy, and create a livable future for mankind.
Author: Cheryl Palm
Publisher: Columbia University Press
ISBN: 9780231508834
Category : Nature
Languages : en
Pages : 494
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Book Description
Caused in part by the slash-and-burn practices of both large- and small-scale farmers, the environmental implications of tropical deforestation remain a worldwide concern. Yet the small-scale farmers who use slash-and-burn agriculture depend on it to produce food and make a living for their families. With contributions from scientists, economists, ecologists, and anthropologists, this book provides an overall analysis of the environmental, economic, and social reasons for why slash and burn is so common and presents alternatives to this destructive practice.
Author: Christoph Steiner
Publisher: Cuvillier Verlag
ISBN: 3867274444
Category : Soil chemistry
Languages : en
Pages : 189
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Book Description
The extraordinary fertility of manmade Terra Preta soils in the Brazilian Amazon provided the incentive to study the effects of soil charcoal amendments on soil fertility, nutrient cycling, and soil biology. The existence of Terra Preta suggests that tropical soils, which are notorious for being infertile, can be greatly improved. The agricultural produces charcoal out of fallow vegetation instead of converting it to carbon dioxide through burning. Slash and char improves soil quality by transferring organic carbon into recalcitrant soil organic matter pools. This newly described agricultural practice has important implications for the earth's carbon budget and sustainability in tropical agriculture.
