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Biochar is the carbon-rich product when biomass (such as wood, manure or crop residues) is heated in a closed container with little or no available air. It can be used to improve agriculture and the environment in several ways, and its stability in soil and superior nutrient-retention properties make it an ideal soil amendment to increase crop yields. In addition to this, biochar sequestration, in combination with sustainable biomass production, can be carbon-negative and therefore used to actively remove carbon dioxide from the atmosphere, with major implications for mitigation of climate change. Biochar production can also be combined with bioenergy production through the use of the gases that are given off in the pyrolysis process. This book is the first to synthesize the expanding research literature on this topic. The book's interdisciplinary approach, which covers engineering, environmental sciences, agricultural sciences, economics and policy, is a vital tool at this stage of biochar technology development. This comprehensive overview of current knowledge will be of interest to advanced students, researchers and professionals in a wide range of disciplines.
Dark Earths are a testament to vanished civilizations of the Amazon Basin, but may also answer how large societies could sustain intensive agriculture in an environment of infertile soils. This book examines their origin, properties, and management. Questions remain: were they intentionally produced or a by-product of habitation. Additional new and multidisciplinary perspectives by leading experts may pave the way for the next revolution in soil management in the humid tropics.
With extensive research, real-world examples, and hands-on applications, this go-to guide offers a comprehensive look at the principles and practices of biochar—and all of its world-changing uses. Like many human discoveries, biochar has likely been invented, lost, and reinvented multiple times. It can be found in the rich terra preta soils of the Amazon and in the ancient “dark earths” dotting Africa, Asia, and Europe. However, biochar isn’t just an archeological curiosity. In The Biochar Handbook, author Kelpie Wilson argues that the simple process of burning organic material in a low-oxygen, low-emission environment could be one of the most powerful tools we have to restore degrad...
The second edition of Contemporary Archaeology in Theory: The New Pragmatism, has been thoroughly updated and revised, and features top scholars who redefine the theoretical and political agendas of the field, and challenge the usual distinctions between time, space, processes, and people. Defines the relevance of archaeology and the social sciences more generally to the modern world Challenges the traditional boundaries between prehistoric and historical archaeologies Discusses how archaeology articulates such contemporary topics and issues as landscape and natures; agency, meaning and practice; sexuality, embodiment and personhood; race, class, and ethnicity; materiality, memory, and historical silence; colonialism, nationalism, and empire; heritage, patrimony, and social justice; media, museums, and publics Examines the influence of American pragmatism on archaeology Offers 32 new chapters by leading archaeologists and cultural anthropologists
Widespread human alteration of the planet has led many scholars to claim that we have entered a new epoch in geological time: the Anthropocene, an age dominated by humanity. This ethnography is the first to directly engage the Anthropocene, tackling its problems and paradoxes from the vantage point of the world’s largest tropical rainforest. Drawing from extensive ethnographic research, Nicholas Kawa examines how pre-Columbian Amerindians and contemporary rural Amazonians have shaped their environment, describing in vivid detail their use and management of the region’s soils, plants, and forests. At the same time, he highlights the ways in which the Amazonian environment resists human manipulation and control—a vital reminder in this time of perceived human dominance. Written in engaging, accessible prose, Amazonia in the Anthropocene offers an innovative contribution to debates about humanity’s place on the planet, encouraging deeper ecocentric thinking and a more inclusive vision of ecology for the future.
21st Century Homestead: Sustainable Agriculture II contains the second part of everything you need to stay up to date on sustainable agriculture, farming, and natural resources.
John H. Walker's innovative study of the Bolivian Amazon examines the agricultural landscape and analyzes the earthworks from an archaeological perspective.