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Soil improvement and mitigation of greenhouse gas emissions for integrated crop-livestock systems: Case study assessment in the Pantanal savanna highland, Brazil

机译：改良作物和畜牧系统的土壤并减少温室气体的排放：巴西潘塔纳尔热带稀树草原高地的案例研究评估

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Greenhouse gas emissions and climate change has been partially attributed to agricultural expansion by deforestation, while the pressure to assure food, fiber and energy for the future generations leads to the intensification of agricultural systems. The transition to more efficient systems is actually considered an important strategy to reduce deforestation and to spare land for other uses, including the recovery of environmental services and ecohydrological processes in the drainage basin such as carbon sink and water regulation. The Brazilian Federal Program for Low Carbon Agriculture (ABC Program) intends to reduce carbon emissions by stimulating technological processes that neutralize emissions or enhance the sinking of greenhouse gases. A pilot farm has been established to assess an intensive animal-plant farming system that incorporates anaerobic digestion for biogas, power generation and organic fertilizer production. Emergy Synthesis was chosen as a methodological tool to assess and to diagnosis the farm system design. The modified emergy assessment including externalities (greenhouse gas emissions) improves the understanding of integrated crop-livestock systems efficiency in internal recycling of nutrients and power conversion. The adoption of manure treatment in intensified agricultural systems can effectively contribute to enhance environmental and economic performances. (C) 2014 Elsevier Ltd. All rights reserved.
机译：温室气体排放和气候变化部分归因于森林砍伐造成的农业扩张，而为子孙后代确保粮食，纤维和能源的压力导致农业系统集约化。实际上，向更高效系统的过渡被认为是减少森林砍伐和腾出土地用于其他用途的重要策略，包括恢复流域的环境服务和生态水文过程，例如碳汇和水调节。巴西联邦低碳农业计划（ABC计划）旨在通过刺激中和排放或增强温室气体下沉的技术过程来减少碳排放。已经建立了一个试验农场，以评估集约化的动植物养殖系统，该系统将厌氧消化用于沼气，发电和生产有机肥料。选择能值​​综合作为评估和诊断农场系统设计的方法论工具。修改后的能值评估包括外部性（温室气体排放），提高了对作物-畜牧综合系统在内部养分循环利用和电力转换中效率的理解。在集约化的农业系统中采用粪肥处理可以有效地促进环境和经济绩效的提高。 （C）2014 Elsevier Ltd.保留所有权利。

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