A B S T R A C TIn recent decades, various studies on policy, management, behaviour, norms and economic incentives related to food waste issues have been conducted. Many of the studies are from a quantitative perspective which has given a wider but general coverage of study and analysis on the matters. However, the impacts of context, such as living environments and social culture, on recycling activities from a qualitative as well as in-depth perspective have seldom been discussed, especially in densely populated communities. Taking Hong Kong as an example, some food waste recycling (FWR) initiatives have been launched in housing estates. However, most projects have been suspended due to many practical problems. Only a few cases are still on-going. Physical setting quality has been identified as a significant factor affecting sustainable behaviour. Inefficient and low-quality public designs that do not consider living environments and specific lifestyles may fail to encourage community participation. This study aims to provide a more in-depth investigation into people's attitudes and actual behaviour towards and to shed light on public design for sustainability. Using the FWR programme in Amoy Gardens as a case, this study uses qualitative research methods to explore FWR experiences and improve its weaknesses. The findings show three potential challenges to FWR in densely populated high-rise buildings: (1) limited space, (2) hygiene issues and (3) implementation and management. This study also provides implications for public design to improve sustainability in communities and encourage public participation in FWR in high-density residential areas.
Many researchers, environmentalists and economists have made tremendous efforts to enable polices and measures for waste recycling, to improve the quality of the public living environment and to achieve a better quality of everyday life. This study examined the quality of life (QOL) in high-rise buildings in relation to sustainability. It investigated household recycling behaviour and explored the QOL factors that affect such behaviour. Two models based on different types of recycling behaviour were estimated: 1) a model for the use of public recycling facilities (UPRF) and 2) a model for the use of private recycling sectors (UPRS). Data were collected through a survey of 505 residents in two old districts of Hong Kong. The assessment of QOL included consideration for the physical settings, the socio-demographic variables and the respondents' attitudes on recycling and living environments. The research methods involved questionnaires and interviews. Correlations and multiple regression analyses were conducted to interpret the data collected through the questionnaires. The findings indicated that UPRF can be significantly predicted by physical settings and by satisfaction with the location of facilities, with the residents' participation and with the quality of the neighbourhood and accommodation. UPRS can be significantly predicted by housing type, income and the availability of private recycling sectors. These findings also indicate some directions for researchers and policymakers to consider. These directions concern how environments and public facilities should be designed to encourage sustainable behaviour and enable a better QOL without compromising environmental sustainability.
Urban agglomerations have gradually formed in different Chinese cities, exerting great pressure on the ecological environment. Ecosystem health is an important index for the evaluation of the sustainable development of cities, but it has rarely been used for urban agglomerations. In this study, the ecosystem health in the middle reaches of the Yangtze River Urban Agglomeration was assessed using the ecosystem vigor, organization, resilience, and services framework at the county scale. A GeoDetector was used to determine the effects of seven factors on ecosystem health. The results show that: (1) The spatial distribution of ecosystem health differs significantly. The ecosystem health in the centers of Wuhan Metropolis, Changsha–Zhuzhou–Xiangtan City Group, and Poyang Lake City Group is significantly lower than in surrounding areas. (2) Temporally, well-level research units improve gradually; research units with relatively weak levels remain relatively stable. (3) The land use degree is the main factor affecting ecosystem health, with interactions between the different factors. The effects of these factors on ecosystem health are enhanced or nonlinear; (4) The effect of the proportion of construction land on ecosystem health increases over time. The layout used in urban land use planning significantly affects ecosystem health.
While many researchers have pointed out that public design can increase users’ sustainable practices, how to achieve good public designs is challenging. To explore the current public design barriers and solutions to household recycling in Hong Kong, our research group, in collaboration with two Caritas Community Centres, adopted participatory action research, including questionnaires, interviews, non-participant observations, collaborative workshops and on-site iterative prototyping process, to carry out a research project. In this project, local residents, recyclers, property management officers and cleaners in five public rental housing estates were recruited to voice their views on public design for recycling. Through the results of the spiral design exploration conducted at Sai Wan Estate, this study demonstrates the validity of action research to promote the participatory design for recycling. The paper concludes with a discussion of some barriers to and experience with applying these methods to improve the practice in the context of high-rise living environments. It also provides experience and insights into action research in public design for designers, researchers and policy makers.
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