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首页> 外文期刊>農業土木学会論文集 >Life cycle assessment of energy consumption and CO_2 emission in nitrogen input for crop production: a study on resources consumption and environmental loading of organic waste recycling in agriculture
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Life cycle assessment of energy consumption and CO_2 emission in nitrogen input for crop production: a study on resources consumption and environmental loading of organic waste recycling in agriculture

机译：作物生产氮素投入能耗和CO_2排放的生命周期评估：农业资源消费与有机废弃物循环利用环境负荷研究

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摘要

Resources consumption and environmental loading (eco-efficiency) of both High input type and Recycling type agriculture scenarios were preliminary examined, using Life Cycle Assessment (LCA) technique. The data collection and examination of life cycle energy and CO_2 emission at each stage, from the fertilizer production up to its use, were carried out to obtain the consumption and emission per unit nitrogen input for crop production. Based on the results of the case study, it was found that the CO_2 emission rate of the Recycling type is 3,373-4,183kg centre dot y~(-1)/ha lower than that of the High input type. On the other hand, quite different life cycle energy consumption levels for the Recycling type are found depending on the composting treatment methods employed. The life cycle energy varied from around 1.3CJ centre dot y~(-1)/ha to around 12.8GJ centre dot y~(-1)/ha, while the life cycle energy of the High input type which was estimated at around 2.TGJ centre dot y~(-1)/ha. Thus, the study results suggest that careful examination should be conducted before the introduction of the Recycling type agriculture to increase the eco-efficiency as a objectives for the regional planning.
机译：使用生命周期评估（LCA）技术，初步检查了高输入类型和回收型农业场景的资源消耗和环境负载（生态效率）。对每个阶段的生命周期能量和CO_2发射的数据收集和检查，从肥料生产到其使用，以获得每单位氮素投入的消耗和排放。基于案例研究的结果，发现回收型的CO_2排放率为3,373-4,183kg中心点Y〜（-1）/ ha低于高输入型。另一方面，根据所采用的堆肥治疗方法，发现了循环型的相当不同的生命周期能量消耗水平。生命周期能量从大约1.3cj中心点y〜（-1）/ ha变化到约12.8gj中心点Y〜（-1）/ ha，而高输入类型的生命周期能量估计在2左右.tgj中心点Y〜（-1）/ ha。因此，研究结果表明，应在引入循环型农业之前进行仔细检查，以将生态效率提高为区域规划的目标。

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