The global environmental paw print of pet food
The global environmental paw print of pet food
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DOI：
10.1016/j.gloenvcha.2020.102153
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发表时间：
2020-11-01
影响因子：
8.9
通讯作者：
Rounsevell, Mark D. A.
中科院分区：
文献类型：
--
作者：
Alexander, Peter;Berri, Aiden;Rounsevell, Mark D. A.
全球宠物拥有量，特别是猫和狗的拥有量，随着收入的增长而增加，与它们的食物相关的环境影响也在增加。这些影响的全球范围尚未量化，现有的国家评估可能存在偏见，因为它们对动物副产品（ABP）的相对影响的解释方式。ABP通常比其他动物产品（即肉、奶和蛋）的价值低，但仍然与不可忽视的环境影响有关。在这里，我们提出了第一个全球环境影响评估的宠物食品。该方法是新颖的，在应用经济价值分配方法的影响，ABP和其他动物产品，以更好地代表环境负担。我们发现，每年全球干宠物食品生产与56-151 Mt CO2当量排放（占全球农业排放的1.1%-2.9%），41-58 Mha农业土地使用（占全球农业土地使用的0.8-1.2%）和5-11 km 3淡水使用（占农业水提取的0.2-0.4%）相关。这些影响相当于英国国土面积的两倍左右，并将使宠物食品的温室气体排放量排在第60位，或相当于莫桑比克或菲律宾等国家的总排放量。这些结果表明，不断增长的宠物食品需求应该被纳入更广泛的全球食品系统可持续性辩论。
Global pet ownership, especially of cats and dogs, is rising with income growth, and so too are the environmental impacts associated with their food. The global extent of these impacts has not been quantified, and existing national assessments are potentially biased due to the way in which they account for the relative impacts of constituent animal by-products (ABPs). ABPs typically have lower value than other animal products (i.e. meat, milk and eggs), but are nevertheless associated with non-negligible environmental impacts. Here we present the first global environmental impact assessment of pet food. The approach is novel in applying an economic value allocation approach to the impact of ABPs and other animal products to represent better the environmental burden. We find annual global dry pet food production is associated with 56-151 Mt CO2 equivalent emissions (1.1%-2.9% of global agricultural emissions), 41-58 Mha agricultural land-use (0.8-1.2% of global agricultural land use) and 5-11 km3 freshwater use (0.2-0.4% of water extraction of agriculture). These impacts are equivalent to an environmental footprint of around twicethe UK land area, and would make greenhouse gas emission from pet food around the 60th highest emitting country, or equivalent to total emissions from countries such as Mozambique or the Philippines. These results indicate that rising pet food demand should be included in the broader global debate about food system sustainability.