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From Fires to Oceans: Dynamics of Fire-Derived Organic Matter in Terrestrial and Aquatic Ecosystems
Fire-derived organic matter, also known as pyrogenic carbon (PyC), is ubiquitous on Earth. It can be found in soils, sediments, water and air. In this wide range of environments, fire-derived organic matter, represents a key component of the organic matter pool, and, in many cases, the largest identifiable group of organic compounds. PyC is also one of the most persistent organic matter fractions in the ecosystems, and its study is, therefore, particularly relevant for the global carbon cycle. From its production during vegetation fires to its transfer into soils, sediments and waters, PyC goes through different transformations, both abiotic and biotic. Contrary to early assumptions, PyC is ...
Methods for Measuring Greenhouse Gas Balances and Evaluating Mitigation Options in Smallholder Agriculture
This book provides standards and guidelines for quantifying greenhouse gas emissions and removals in smallholder agricultural systems and comparing options for climate change mitigation based on emission reductions and livelihood trade-offs. Globally, agriculture is directly responsible for about 11% of annual greenhouse gas (GHG) emissions and induces an additional 17% through land use change, mostly in developing countries. Farms in the developing countries of sub-Saharan Africa and Asia are predominately managed by smallholders, with 80% of land holdings smaller than ten hectares. However, little to no information exists on greenhouse gas emissions and mitigation potentials in small...
Constructing the Image of the Mexican Revolution
With a cast ranging from Pancho Villa to Dolores del Río and Tina Modotti, Constructing the Image of the Mexican Revolution demonstrates the crucial role played by Mexican and foreign visual artists in revolutionizing Mexico's twentieth-century national iconography. Investigating the convergence of cinema, photography, painting, and other graphic arts in this process, Zuzana Pick illuminates how the Mexican Revolution's timeline (1910–1917) corresponds with the emergence of media culture and modernity. Drawing on twelve foundational films from Que Viva Mexico! (1931–1932) to And Starring Pancho Villa as Himself (2003), Pick proposes that cinematic images reflect the image repertoire produced during the revolution, often playing on existing nationalist themes or on folkloric motifs designed for export. Ultimately illustrating the ways in which modernism reinvented existing signifiers of national identity, Constructing the Image of the Mexican Revolution unites historicity, aesthetics, and narrative to enrich our understanding of Mexicanidad.
Carbon Sequestration And Soil Fertility In Dryland Acacia Senegal Plantations Of Varying Age In Sudan
African drylands are extensively degraded as indicated by reduced soil organic carbon (SOC) contents.Restoration through management practices that increase tree cover can be expected to increase SOC contents and soil fertility. We investigated the potential of Acacia senegal trees for increasing SOC and improving soil fertility at two sites in Sudan. Biomass C and SOC stocks, contribution of trees and herbs to SOC, soil nutrient (N, P, available P, K, exchangeable K) contents and potential N2 fixation by A. senegal in plantations of varying age (7 to 24 years) and in adjacent grasslands were determined. Total biomass C stocks increased with plantation age. While most of this increase was due...
Irish Forestry
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Greenhouse Gases: Sources, Sinks and Mitigation
This book begins with a brief background on greenhouse gases sources and sinks and continues with a discussion in different sectors including forest fluxes to human health and modeling techniques to policy measures. The chapters explore in detail about the GHG emission budgets, mitigation strategies, technical advancement and input-output analysis. Greenhouse gases (GHGs) occur naturally in our atmosphere and are essential to the survival of most of the organisms on the planet earth. GHGs such as such as carbon dioxide, methane, nitrous oxide, and ozone etc. play a major role in balancing the radiative budget, by absorbing or emitting some of the infrared rays reflecting from the earth’s s...
Mexicali
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Santa Fé y Bogotá
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