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An assessment of greenhouse gas emissions from the Australian vegetables industry

机译:对澳大利亚蔬菜产业温室气体排放的评估

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摘要

Recently, partly due to the increasing carbon consciousness in the electorates and partly due to the imminent introduction of the Australian Government's Carbon Pollution Reduction Scheme (CPRS), estimating carbon footprints is becoming increasingly necessary in agriculture. By taking data from several sources, this study estimates the national greenhouse gas (GHG) emissions from a variety of farm inputs, for the 23 key vegetables crops grown in Australia. For the 121,122 ha of land occupied by vegetable farms, there are 1.1 MtCO2e GHG emissions or 9.2 tCO2e ha− 1. In total, 65 % of total GHG emissions from the vegetable industry are due to electricity use for irrigation and post-harvest on-farm activities, 17 % from soil N2O emissions due to N fertiliser use, 10 % from agrochemicals, 7 % through fossils fuels and 1 % from on-farm machinery. The top four vegetables (by area), potatoes, lettuce, tomatoes and broccoli account for 29.1 %, 7.9 %, 5.9 % and 7.2 % of total GHG emissions from vegetables, respectively. However, the ratio of GHG emissions between the highest and lowest-emitting crops per hectare and per tonne, are different. Therefore, care must be exercised in carbon footprint labelling vegetable products to ensure that the labels reflect carbon emissions on a per tonnage basis.
机译:最近,部分是由于选民对碳的意识增强,部分是由于澳大利亚政府即将实施的《减少碳污染计划》(CPRS),估计农业中的碳足迹已变得越来越必要。通过从多个来源获取数据,本研究估算了澳大利亚种植的23种主要蔬菜作物的各种农场投入产生的国家温室气体(GHG)排放。在蔬菜农场占用的121,122公顷土地中,有1.1 MtCO 2 e温室气体排放或9.2 tCO 2 e ha â1 。总计,蔬菜行业温室气体总排放量的65%归因于灌溉和收获后农场活动的电力消耗,17%归因于氮肥的使用而导致的土壤N 2 O排放,农用化学品占10%,化石燃料占7%,农场机械占1%。排名前四位的蔬菜(按面积计),土豆,生菜,西红柿和西兰花分别占蔬菜总温室气体排放量的29.1%,7.9%,5.9%和7.2%。但是,每公顷和每吨排放量最高和最低的作物之间的温室气体排放比例不同。因此,必须谨慎对待蔬菜产品的碳足迹标签,以确保标签反映每吨碳排放量。

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    Faculty of Business and Australian Centre for Sustainable Catchments (ACSC), University of Southern Queensland, Toowoomba, Queensland, Australia;

    Faculty of Education and Australian Centre for Sustainable Catchments (ACSC), University of Southern Queensl;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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  • 入库时间 2022-08-18 00:57:58

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