The Role of Green Productive Community in Healthy Urban Planning

The construction of a healthy city is facing the challenge of urbanization. Although substantial improvement has been made, there are still some problems in urban planning, such as inadequate management, space out of control, environmental risks and system fragility. The reasons are: (1) the scale of urban structure is too large, there is an urgent need to strengthen the medium-and micro-spatial planning; (2) the urban system is inflexible and needs to be transformed from consumption to production. Therefore, it is necessary to adopt a distributed network pattern with hierarchical system and a systematic planning strategy with production function. First of all, determine the role of community scale as the basic unit in health care and disaster prevention and mitigation. (1) Community scale directly affects the two levels of intervention with the greatest impact potential- the social determinant of health (SDH), and environmental change (in order to make individual default choices healthier and easier). Therefore, community planning can have a positive impact on public health at an earlier life cycle with better cost-effectiveness. (2) the community has the characteristics of group organization in a certain space and is often regarded as the basic unit of disaster prevention and control. Strengthening community-based governance, spatial organization, social linkages and early warning monitoring is essential for disaster deaths and losses. Secondly, analyze the health potential of productive strategies, productive strategies can be carried out according to different types of resources, in which community urban agriculture is a typical representative. Although traditional agriculture has certain health risks, people have gradually recognized the potential of urban agriculture to improve health in various ways and assessed it in terms of social, economic, ecological and nutritional aspects. the aim is to maximize health benefits and reduce negative impacts. Through three practical cases of the Plan4Health project in the United States, IET in the United Kingdom and Tokyo Nerima City in Japan, which demonstrates the health security capacity of urban agriculture as a key area of community planning and in a state of daily relaxation and abnormal emergency. Finally, it is proposed that the health planning strategy should be formulated with systematic thinking, and the productive function should be used as the "catalyst" to optimize the community space and enhance the function of the system in parallel. (1) the use of functional implantation to increase the flexibility of the system to cope with abnormal states; (2) the use of functional reorganization to increase sustainability in the face of daily state. On this basis, the full integration of productive system into healthy urban planning can give full play to its five major functions: food security function, eco-environmental function, leisure and cultural function, technological demonstration function and commercial and social security function.