(((atmospheric OR anthropogenic OR effect* OR emission* OR footprint* OR mitigat* OR sav* OR reduc* OR budget* OR impact* OR decreas*) AND (carbon OR CO2 OR CH4 OR methane OR N2O OR nitrous oxide OR 'greenhouse gas*' OR GHG OR GHGs)) OR (climat* AND (action* OR chang* OR warm* OR shift*)) OR 'global warming' OR 'emission reduction*' OR (mitigation AND (action* OR potential*)) NOT (catalyst* OR distill* OR chemicals OR super-critical OR foaming OR pore OR nanotube*)) | |||||
((lifecycle OR life-cycle OR 'life cycle' OR LCA OR embodied OR indirect OR embedded OR 'supply chain' OR 'impact assessment*') AND (review* OR meta-aggrega* OR meta-analys* OR metaggrega* OR metaanalys* OR meta-stud* OR metastud* OR overview* OR 'systematic map' OR synthesis OR (meta AND (stud* OR analys* OR aggrega*))) OR (((multiregional OR multi-regional OR 'multi regional') AND (input-output OR 'input output')) OR MRIO)) | |||||
Sub-string Z-term | (1) General | (2) Transport | (3) Food | (4) Housing | |
Consumption domains | (consum* OR lifestyle* OR demand* OR waste*) | ((airplane* OR automobile* OR bicycl* OR bik* OR bus* OR car* OR commut* OR cycl* OR *diesel OR driv* OR engine* OR flight* OR fly* OR fuel* OR gasoline OR 'liquefied petroleum gas' OR LPG OR kerosene OR metro OR mobil* OR plane* OR ride* OR subway OR touris* OR train* OR transit OR transport* OR travel* OR underground OR vehicle*)) | (beef OR beverage* OR 'calor* intake' OR cereal* OR cheese OR chicken OR dairy OR diet* OR egg* OR fertilizer* OR fish OR food OR fruit* OR grain* OR meat OR milk OR plant* OR pork OR restaurant OR sugar OR vegetable* OR yoghurt) | ('air condition*' OR apartment* OR appliance* OR boiler* OR cement OR clay OR concrete OR construct* OR cool* OR dwelling* OR electronic* OR energy OR 'floor space' OR heat* OR hemp OR home* OR hous* OR light* OR 'living space' OR metal* OR refrig* OR rent* OR room OR sand OR shelter OR 'solar panel*' OR stone OR timber OR window* OR 'white good*' OR wood) | |
Consumption interventions | (decreas* OR durab* OR eco* OR efficien* OR green* OR longetivity OR natural OR maintain* OR recycl* OR reduc* OR renewabl* OR repair* OR reus* OR 'second hand' OR second-hand OR shar* OR sufficien*) | ('light weight' OR electric* OR hybrid* OR telecommut* OR telework* OR walk*) | ('eat less' OR compost* OR flexitarian OR local OR organic OR season* OR vegan OR vegetarian) | (cohous* OR co-hous* OR downsize* OR insulat* OR refurbish* OR renovat* OR retrofit* OR ((temperature OR thermal) AND (preference OR comfort OR set-point* OR 'set point*' OR setting))) |
Inclusion criteria | Exclusion criteria | |
Eligible population/setting | No geographical restriction and focus on household consumption | Mitigation potential not directly linked to households (e.g. government spending) |
Eligible intervention: Consumption options by consumption domain |
| Mitigation options beyond the adopted framework [59] were out of scope. This includes macro-economic or industrial energy efficiency measures and technological solutions, producer incentives or other options on the supply side; population [11] measures; mitigation potential of policies |
Outcome: Mitigation potential and lifecycle emissions | Mitigation potential assessed through annual carbon savings in kilograms/tons CO2-equivalents per capita, converting GHGs (e.g. CO2, CH4, N2O, SF6) to equivalent amounts of CO2 (e.g. GWP100). | Focus only on direct emissions [57] (e.g. well-to-wheel LCAs) or carbon intensities in functional units with no estimate of consumption; system-wide effects and potential for income rebound effects [41–43]. Consumption activities with high carbon intensity [3, 60] should be considered to avoid rebound. |
Study types | Supply chain lifecycle GHG emissions through LCA review studies and MRIO studies, physical trade flow or hybrid modelling studies, studies on re-designing of consumption. | Systematic maps and reviews with only narrative synthesis; mitigation assessment through regression coefficients. |
Consumption options with high mitigation potentials | Overcoming infrastructural lock-in | Overcoming institutional lock-in | Overcoming behavioral lock-in |
Dietary shift (e.g. vegan, vegetarian) | Change land use practices; Remove investment infrastructure supporting unsustainable and extractive industries | Remove unsustainable subsidies in agriculture, e.g. for meat and dairy; Offer support for alternatives.; Encourage just transition for animal farmers; Better availability of low-carbon options in supermarkets, restaurants, schools, etc; Coordinated efforts of health organizations and government [89]; Ban advertising of high-carbon meats and other high-carbon items. | Encourage low-carbon shared meals [127] and diets; Feedbacks for change in social norms and traditions around food consumption [127], e.g. vegan food as default; Decouple veganism/vegetarianism from a particular social identity |
Transport mode shift (e.g. active, public transport), car-free | More public transport infrastructure developments for urban and long-distance travel, e.g. cycling lanes, buses, trains; More bike spaces on public transport | Parking and zoning restrictions, e.g. car-free zones and days; Vehicle and fuel tax increases and toll charges; Make driving less convenient in urban areas; Enforce stricter air pollution standards; Ban car advertising | Raising awareness about co-benefits associated with active travel [58]; Social feedback with the visibility of cycling [127]; Decouple car travel from a particular social identity; Improve drivers awareness of cyclers and safety |
Reduction in overall travel demand | More compact urban spaces and diverse land use [17] | Allow for flexible working schemes and telecommuting; Halt air travel expansion; Ban flight advertising | Carpooling and carsharing; Encourage telecommuting, moving into denser settlements |
Upscaling of electric vehicles | Decarbonize the grid and meet potential additional capacity through renewables; Provision of charging infrastructure | Sustained policy support, e.g. free public charging, tax and fee deductions, subsidies for low-income buyers; Enforce stricter air pollution standards | Tackle charging time acceptance, range anxiety [61, 67, 75] |
Renewable-based heating and electricity | Infrastructure investment in renewables | Halt fossil fuel expansion/use and support upscaling of renewables; Incentivize decentralized electricity generation, particularly for low-income households; Enforce stricter air pollution standards; Encourage just transitions for fossil fuel workers; Fossil fuel divestment | Raise public awareness and target NIMBY concerns |
Refurbishment and renovation | Energy efficient construction and equipment | Enforce building standards; Encourage investment by dwelling owners and landlords in the fabric of the building and energy efficiency as well as broader home improvements [115]; Encourage just transitions, e.g. consideration of fuel poverty; Remove inefficiency of listed building | Public awareness around economic and environmental benefits; Reconcile investment incentives with householders' images of home comfort [115] |