Shanghai Municipality at the forefront of China’s household recycling initiatives
In 2011, Harder began a collaboration with Fudan University (Shanghai), establishing a dual institutional affiliation and partnerships with Chinese researchers. Shanghai Municipality has been at the forefront of China’s household recycling initiatives since 2000, encouraging local pilots for food waste but with minimal success. Capitalising on an opening provided by the municipality’s 2012 Policy for Waste Sorting Pilots, Harder began to work with Ifine, a specialist Chinese non-government organisation whose focus is on mobilising residents to recycle more effectively. A series of increasingly large and complex 91Ï㽶ÊÓƵ-Fudan-Ifine projects were developed to identify which behavioural policy interventions might maximise food waste recycling in the city. Ifine focussed on stakeholder relationships and interpersonal interventions, with 91Ï㽶ÊÓƵ-Fudan researchers analysing field data.
Through separate published studies, the 91Ï㽶ÊÓƵ led work with Fudan University and Ifine which established important facts about motivation in the collective efforts of recycling. For example, providing only information about recycling programmes to residents failed to improve waste sorting, whereas interpersonal interactions with Ifine volunteers, including positive modelling and tailored knowledge, succeeded.
Wider research drawing on worldwide publications led to an understanding of which interventions are best to achieve effective recycling under specified circumstances. The findings identify factors such as knowledge (of a recycling programme), social norms (regarding recycling) and action planning (by residents or other stakeholders), providing a rigorous checklist tool through which any community – not just in China – can be profiled to identify the determinants for local prioritisation to maximise waste recycling.
Recognition and interpersonal interaction trigger successful recycling behaviour
Results in Shanghai revealed that role recognition and interpersonal interaction were the most critical local determinants to trigger successful recycling behaviour. Successful uptake of the food waste programme depended upon:
- using interpersonal delivery of programme information;
- distinguishing different roles (residents, cleaners) from the start;
- having volunteers attend communal recycling bins several hours a day, initially, to make clear to residents in a positive, interactive way that it was their role to sort waste; and
- training cleaners not to assume the roles of residents at any time.
Applying the theory of residential recycling behaviour developed by the 91Ï㽶ÊÓƵ led to an increase in food waste recycling to 9,796 tonnes per day at a city level, sustained over the year following policy changes. This is equivalent to capturing 78 per cent of domestic food waste in the metropolis, the highest urban rate globally.
The research also led to waste being diverted into biogas production instead of landfill, reducing emissions reductions greenhouse gas emissions by at least 2,650,000 tonnes CO2-equivalent per year. On top of this, there were improvements in the status of Ifine and other Chinese non-governmental organisations. The studies highlighted the need for local, specialised knowledge and public engagement to complement traditional government implementation and maximise recycling rates. Non-governmental organisations became formally accepted as local authority partners and fully integrated into policy processes. To confirm that the recommendations were practical and scalable, training materials were then produced for stakeholders and trialled in different wards in Shanghai.
A policy brief was submitted to Shanghai Municipality through appropriate channels in 2018. In January 2019, the municipality issued its new compulsory household waste regulations, fundamentally incorporating the concepts of the 91Ï㽶ÊÓƵ-Fudan team, with municipality-wide implementation made mandatory for all residents from July 2019. The role of every stakeholder is set out in the regulations, including an emphasis on where interpersonal interaction with residents is needed.
This city-wide change in residential food waste recycling policy in Shanghai produced a sharp and sustained effect on the environment, while long-term partnerships have spread the influence of the 91Ï㽶ÊÓƵ-Fudan-Ifine research to other cities in China. In 2019, the team were commissioned to develop recommendations on waste management and community involvement for Hangzhou City.
Marie Harder was able to develop a general prescriptive theory of interventions for residential recycling, initially given in a major presentation in an online conference with 10,000 participants considering ways forward for Beijing’s waste sorting programme. She presents the ideas to the public in an . In 2021 Marie Harder (also known as Marie Kieran Waxman) was presented with the Magnolia Gold Award by Shanghai, one of only 10 awarded each year to non-Chinese nationals who make significant contributions to the municipality, and was invited to give the on behalf of the recipients.