The COVID-19 pandemic and the subsequent lockdown of cities have led to the rapid growth of online food delivery (OFD). Moreover, there are concerns that OFD platforms may impose offers on users in order to continue to increase their market share, leading to numerous environmental issues such as overconsumption and a significant increase in plastic packaging waste. Most studies have focused on the environmental impacts associated with food packaging and have been mostly limited to China. However, less research has been carried out on the overall CO2 emissions of an OFD order including food. In this study, the CO2 emissions of an OFD order were assessed by considering the production, distribution, consumption and disposal of the ingredients, based on lifecycle thinking and existing secondary data, for three representative food groups (Western food, Japanese food and Chinese food) in Japan. This study found that the food production of an OFD order accounts for more than 70% of the CO2 emissions of the entire process, especially food ingredient production. Policy support and initiatives such as OFD platforms being able to serve different quantities of food based on actual consumer demand to avoid food waste, as well as changes in delivery methods, would help reduce the CO2 emissions of OFD.

Given the effort to reduce greenhouse gas (GHG) emissions, understanding the consumption patterns that facilitate and support changes is essential. In this context, household food consumption constitutes a large part of society’s environmental impacts due to the production and solid waste generation stages. Hence, we focus on applying the Life Cycle Assessment to estimate Brasilia’s GHG emissions associated with household food consumption. We have used microdata from the Personal Food Consumption Analysis to address consumption patterns. The life cycle approach relies on the adaptations for Brasilia’s scenario of the inventories available in the databases of Ecoinvent 3.6 Cutoff and Agribalyse 3.0.1. Individuals’ GHG emissions results were classified according to sociodemographic groups and dietary patterns and analyzed through Analysis of Variance (ANOVA). The results indicate that household food consumption contributes 11,062.39 t CO2e daily, averaging 5.05 kg CO2e per capita. Meat consumption accounts for the largest share of emissions (55.27%), followed by beverages (18.78%) and cereals (7.29%). The ANOVA results indicate that individuals living in houses, individuals between 45 and 54 years old, and men have a higher carbon footprint. Therefore, future analyses for potential reduction should incorporate these target groups. Regarding dietary patterns, vegan individuals contribute 3.05 kg CO2e/day, 59.00% fewer emissions than omnivorous people. The no red meat, pescatarian, and vegetarian diets also imply lower food-related GHG emissions.

Food waste has become a pressing global issue in recent years. In China, the issue of food waste has become increasingly severe. As a provincial capital city, Harbin is also a major agricultural city in China with distinct urban and rural features. This paper uses Harbin as a case study to evaluate different strategies for preventing and reducing food waste based on these urban–rural differences. This research is based on official data on household food waste in urban and rural areas of Harbin, as well as data collected from 333 telephone surveys through stratified random sampling. Independent t-tests, one-way analysis of variance (ANOVA), and logistic regression analysis were used to analyze the survey data, followed by a review of existing food waste policies and strategies. Our findings show that Harbin has had a positive response in adhering to national anti-food waste policies. However, its implementation has not been effective. There is a continuous increase in food waste generation. Moreover, gender, level of education, and household annual income have a significant impact on residents’ food waste habits and there are significant differences between urban and rural areas in terms of “eating out” and “ordering food ingredients”. The average daily amount of food waste generated by urban households is 3216.31 g, which is 2.4 times that of rural households. There are also differences in the causes of food waste between urban and rural residents due to different diets and eating habits. As a result, feasible and effective policy recommendations have been proposed to reduce food waste in response to these urban–rural differences.

Plastic pollution is recognized as one of the most urgent global environmental concerns. China is the top producer and consumer of plastics and creates the most plastic waste globally. To evaluate policy options to control plastic pollution in China, we first reviewed the relevant policies and action plans in place. Then, we examined plastic-material flows and changes at the national level based on officially published data to evaluate the current situation and efficacy of policies at the macro-level. Results showed that 2016, the start of the 13th Five-Year Plan, was a pivotal year in the history of China’s plastic policies tackling plastic issues nationally and internationally. Since 2016, the growth trend in the production and consumption of plastic products has slowed and the recycling rate has risen, surpassing 30% in 2021. To further tackle plastic pollution, key suggestions with important policy implications were provided, covering better integration of policies, the combined management of vertical–horizontal governance, tracking-system implementation, the introduction of a quality-certification system, the development of behaviour-based consumer-oriented solutions, the promotion of stakeholder collaboration, and the need for appropriate post-COVID-19 policies.

Rapid economic development has led to an overwhelming surge in waste generation, demanding urgent and comprehensive waste management solutions, particularly in developing countries. Source separation is a critical and indispensable step in integrated waste management and is featured as a government-led pattern in general. However, its implementation challenges persist in many cities because of complex waste systems and a lack of multi-stakeholder partnerships. Since there is a paucity of empirical research focusing specifically on the recycling business, this study presents a case study of HUGE Recycling, operating in Yuhang District, Hangzhou, China, to explore the effectiveness of a business-driven, multi-stakeholder partnership model in promoting source separation. The paper reveals that the recycling business plays a significant role in bridging the gap between local governments, residents, and the recycling industry and identifies some key factors in the business-driven, multi-stakeholder cooperative partnership model, fulfilling the requirements of multi-stakeholders. This case fosters collaboration between local governments, residents, and the recycling industry, encouraging active participation and alleviating the government’s burden. The findings highlight the potential applicability of the HUGE Recycling Model to waste management in resource-constrained developing countries for better resource management.