以消费为基础,追踪埃及收入不平等对水污染责任的影响:内部灰色水足迹视角

IF 6.6 2区 经济学 Q1 ECOLOGY Ecological Economics Pub Date : 2024-10-03 DOI:10.1016/j.ecolecon.2024.108404
Shimaa M. Wahba
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引用次数: 0

摘要

确保水质和平等是可持续发展的全球目标。本研究调查了埃及的收入和支出不平等如何影响家庭的内部灰水足迹(IGWF),即吸收通过生产国内消费产品排放的污染物所需的国内淡水,并根据最终消费者的收入和支出分配水污染责任。它结合 20 个收入水平的家庭支出调查数据,建立了灰水扩展区域间投入产出模型,计算了 20 个收入群体的家庭 IGWF。它在家庭收入和 IGWF 之间进行了回归分析。立方规格最符合两者之间的关系,表明高收入水平最终会平均增加家庭的 IGWF。IGWF 的收入弹性(0.81)意味着 IGWF 的平均增长速度低于收入增长速度。然而,由于总体消费较高,富人仍然是 IGWF 的主要驱动力。最富裕的 4%家庭占 IGWF 的 12%,大约相当于最贫穷的 24%家庭的总和,占流动性 IGWF 的 63%和娱乐性 IGWF 的 19%。IGWF-基尼系数随着产品的奢侈程度而增加,例如,流动性(0.81)和娱乐性(0.40)。这项研究表明,有必要为主导特定产品 IGWF 的收入群体设计可持续消费政策,在减少埃及水污染的同时消除不平等现象。
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A consumption-based approach to trace the effects of income inequality on water pollution responsibility in Egypt: An internal grey water footprint perspective
Ensuring water quality and equality are global goals for sustainable development. This study investigates how Egypt's income and expenditure inequalities affect households' internal grey water footprint (IGWF), i.e., domestic freshwater needed to assimilate pollutants discharged through producing products consumed domestically, allocating water pollution responsibility to final consumers based on their income and expenditure. It calculates households' IGWF of 20 income groups, developing a grey-water extended interregional input-output model combined with household expenditure survey data of 20 income levels. It performs a regression analysis between households' income and their IGWF. The cubic specification best fits the relationship, indicating that high-income levels eventually increase households' IGWF on average. The income elasticity of IGWF (0.81) implies that IGWF grows slower than income on average. However, the rich remain the main IGWF drivers due to their higher overall consumption. The wealthiest 4% are responsible for 12% of households' IGWF, approximately equivalent to that of the poorest 24% combined, dominating 63% of mobility's IGWF and 19% of recreation's. IGWF-Gini coefficient increases as products become more luxurious, e.g., mobility (0.81) and recreation (0.40). This study demonstrates the need to design sustainable consumption policies for income groups dominating specific products' IGWF, reducing Egypt's water pollution while eliminating inequality.
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来源期刊
Ecological Economics
Ecological Economics 环境科学-环境科学
CiteScore
12.00
自引率
5.70%
发文量
313
审稿时长
6 months
期刊介绍: Ecological Economics is concerned with extending and integrating the understanding of the interfaces and interplay between "nature''s household" (ecosystems) and "humanity''s household" (the economy). Ecological economics is an interdisciplinary field defined by a set of concrete problems or challenges related to governing economic activity in a way that promotes human well-being, sustainability, and justice. The journal thus emphasizes critical work that draws on and integrates elements of ecological science, economics, and the analysis of values, behaviors, cultural practices, institutional structures, and societal dynamics. The journal is transdisciplinary in spirit and methodologically open, drawing on the insights offered by a variety of intellectual traditions, and appealing to a diverse readership. Specific research areas covered include: valuation of natural resources, sustainable agriculture and development, ecologically integrated technology, integrated ecologic-economic modelling at scales from local to regional to global, implications of thermodynamics for economics and ecology, renewable resource management and conservation, critical assessments of the basic assumptions underlying current economic and ecological paradigms and the implications of alternative assumptions, economic and ecological consequences of genetically engineered organisms, and gene pool inventory and management, alternative principles for valuing natural wealth, integrating natural resources and environmental services into national income and wealth accounts, methods of implementing efficient environmental policies, case studies of economic-ecologic conflict or harmony, etc. New issues in this area are rapidly emerging and will find a ready forum in Ecological Economics.
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