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Author: Md. Bahar-Ud-Din Shah
Publisher:
ISBN:
Category : Social Science
Languages : en
Pages : 222
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Book Description
Study of shifting cultivation; with reference to Ukhrul district, India.
Author: Md. Bahar-Ud-Din Shah
Publisher:
ISBN:
Category : Social Science
Languages : en
Pages : 222
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Book Description
Study of shifting cultivation; with reference to Ukhrul district, India.
Author: Vaclav Smil
Publisher: MIT Press
ISBN: 0262528274
Category : Science
Languages : en
Pages : 317
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Book Description
An interdisciplinary and quantitative account of human claims on the biosphere's stores of living matter, from prehistoric hunting to modern energy production. The biosphere—the Earth's thin layer of life—dates from nearly four billion years ago, when the first simple organisms appeared. Many species have exerted enormous influence on the biosphere's character and productivity, but none has transformed the Earth in so many ways and on such a scale as Homo sapiens. In Harvesting the Biosphere, Vaclav Smil offers an interdisciplinary and quantitative account of human claims on the biosphere's stores of living matter, from prehistory to the present day. Smil examines all harvests—from prehistoric man's hunting of megafauna to modern crop production—and all uses of harvested biomass, including energy, food, and raw materials. Without harvesting of the biomass, Smil points out, there would be no story of human evolution and advancing civilization; but at the same time, the increasing extent and intensity of present-day biomass harvests are changing the very foundations of civilization's well-being. In his detailed and comprehensive account, Smil presents the best possible quantifications of past and current global losses in order to assess the evolution and extent of biomass harvests. Drawing on the latest work in disciplines ranging from anthropology to environmental science, Smil offers a valuable long-term, planet-wide perspective on human-caused environmental change.
Author: Stefano Pagiola
Publisher: World Bank Publications
ISBN: 9780821344217
Category : Technology & Engineering
Languages : en
Pages : 112
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Book Description
This book focuses on the global effects of land degradation, but emphasizes other important levels of land degradation: at the field level, it may result in reduced productivity; at the national level, it may cause flooding, and sedimentation; and, at the global level, it can contribute to climate changes, damaging bio-diversity, and international waters. The effects on climate changes are explored, and the report questions the extent to which land degradation on agricultural land, affects climate change. Does it increase emissions of greenhouse gases? Does it affect land's capacity to serve as a carbon sink? Can appropriate management enhance both land's productivity, and its capacity to store carbon? The carbon cycle in soils is analyzed, indicating land degradation is likely to reduce the ability of soils to serve as carbon sink, and release stored carbon into the atmosphere, and, bio-diversity effects are likely to be adverse. Global benefits of land degradation control, include afforestation, to allow increased carbon sequestration, and provide adequate bio-diversity habitats; and, community-based wildlife management, can provide alternatives to some marginal areas. Although integrating global dimensions into land degradation control projects, may reverse the field level, or national problems it is causing, difficulties and constraints will likely contribute to the failure of these projects.
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: M. M. Jana
Publisher:
ISBN:
Category : Environmental policy
Languages : en
Pages : 374
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Book Description
Author: N. Bhupendro Singh
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 268
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Book Description
Author: Dhirendra Narayan Majumdar
Publisher:
ISBN:
Category : Shifting cultivation
Languages : en
Pages : 370
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Book Description
Author: Gaurav Mishra
Publisher: Springer Nature
ISBN: 981975223X
Category :
Languages : en
Pages : 293
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Book Description
Author: C. Joshua Thomas
Publisher: Daya Books
ISBN:
Category : Manipur (India)
Languages : en
Pages : 170
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Book Description
Contributed articles presented at the Seminar on "Constraints in the Development of Manipur" at Imphal, Manipur during Oct. 18-19, 2000.
Author: Manipur (India). Legislative Assembly
Publisher:
ISBN:
Category : Manipur (India)
Languages : en
Pages : 716
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Book Description
