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Biomass consumption and environmental footprints of beef cattle production in Argentina
Agricultural Systems ( IF 6.6 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.agsy.2020.102944
Ezequiel M. Arrieta , Diego A. Cabrol , Anibal Cuchietti , Alejandro D. González

Abstract Argentina is globally known as a beef producer and consumer. Although the national and international significance of Argentinean bovine meat production, only few but valuable attempts were made to systematize and evaluate the environmental impact of the beef cattle sector by using a life cycle perspective. In the present work we aim to assess the environmental performance of the Argentinean beef cattle sector by performing a cradle-to-farm-gate partial life cycle analysis. Firstly, we modeled 75 beef cow-calf and finishing systems distributed among 8 livestock regions to obtain the environmental footprint per ton of live weight (LW) at farm gate for each cow-calf and finishing system. Secondly, the cow-calf and finishing systems were linked to form full production systems for each region and weighted by regional stocks. Thirdly, the regional data were integrated to determine the weighted average footprint per ton of LW and the absolute environmental impacts of the entire beef cattle sector. For 2016, the weighted means of environmental footprints at national scale were: 22.6 ton DM/ton LW for biomass consumption, 10.7 ha/ton LW for land occupation, 17.4 ton CO2/ton LW for GHG emissions, 10.3 GJ/ton LW for fossil energy use, 182 kg N-P-S/ton LW for synthetic fertilizer use and 4.68 kg a.i./ton LW for pesticides use. As a result, the total production of beef cattle in Argentina during 2016 consumed an estimated 129 Mton of biomass, of which 92% was grass (71% native pastures and 21% seeded pastures) and 8% were supplements as maize grain, silage (maize and sorghum) and hay. Regarding land occupation 61.1 Mha was necessary to supply the sector, 95% of it represented by grasslands (81% native pastures and 14% seeded pastures). Also, the beef cattle sector emitted to the atmosphere 99.3 Mton CO2-eq and used a total of 58.8 million GJ of fossil energy, 1.04 Mton of synthetic fertilizer and 26.7 thousand kg a.i. of pesticides.

中文翻译:

阿根廷肉牛生产的生物质消耗和环境足迹

摘要 阿根廷是全球知名的牛肉生产国和消费国。尽管阿根廷牛肉生产在国内和国际上具有重要意义,但通过使用生命周期的视角来系统化和评估肉牛部门的环境影响的尝试很少,但很有价值。在目前的工作中,我们旨在通过执行从摇篮到农场大门的部分生命周期分析来评估阿根廷肉牛部门的环境绩效。首先,我们对分布在 8 个畜牧区的 75 个肉牛犊和育肥系统进行建模,以获得每个牛犊和育肥系统在农场门口每吨活重 (LW) 的环境足迹。其次,将牛犊和育肥系统联系起来,形成每个地区的完整生产系统,并按地区库存加权。第三,区域数据被整合以确定每吨 LW 的加权平均足迹和整个肉牛部门的绝对环境影响。2016年全国环境足迹加权平均值为:生物质消耗22.6吨DM/吨LW,土地占用10.7公顷/吨LW,温室气体排放17.4吨CO2/吨LW,化石燃料10.3 GJ/吨LW能源使用,合成肥料使用 182 kg NPS/吨 LW,农药使用 4.68 kg ai/吨 LW。因此,2016 年阿根廷肉牛的总产量消耗了估计 129 吨的生物质,其中 92% 是草(71% 原生牧场和 21% 播种牧场),8% 是玉米粒、青贮饲料(玉米和高粱)和干草。关于土地占用 61.1 Mha 是供应该部门所必需的,其中 95% 为草原(81% 原生牧场和 14% 播种牧场)。此外,肉牛部门向大气排放了 99.3 吨二氧化碳当量,总共使用了 5880 万吉焦的化石能源、1.04 吨合成肥料和 2.67 万公斤农药活性成分。
更新日期:2020-11-01
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