森林城市群建设对公共健康的影响及其作用机制OACHSSCD

The construction of forest urban agglomerations has evolved from a single ecological project to an important public health intervention policy.Scientifically assessing its health benefits holds profound practical significance for optimizing territorial spatial planning and promoting the Healthy China strategy.This paper takes the Pearl River Delta Forest Urban Agglomeration as an example.Based on the panel data of 20 cities in Guangdong Province from 2011 to 2023,a public health evaluation index system was constructed from three aspects:physical health,mental health and social health.The entropy weight method was used to calculate the index weights.The physical health index,mental health index,social health index and comprehensive public health index were calculated by using the weighted summation method.On this basis,the impact of forest urban agglomerations construction on public health and its three dimensions was explored by means of the classic difference-in-differences model system.Furthermore,air quality and the availability of green space were selected as mediating variables,and the mediating effect model was used to identify the mechanism by which the construction of forest urban agglomerations construction affects public health.Research shows that:(1)The construction of the Pearl River Delta Forest Urban Agglomeration can significantly improve public health,with the experimental group increasing by 2.9%compared to the control group.According to the parallel trend test,the improvement effect of the construction of the Pearl River Delta Forest Urban Agglomeration on public health has been increasing year by year in the three years after the policy implementation.This indicates that the impact of the policy on the improvement of public health is not a short-term and occasional effect,but accumulates continuously with the advancement of ecological construction.Moreover,the effect of the policy implementation will gradually show long-term effectiveness over time.(2)From the perspective of the three dimensions of public health,the mental health benefits of the construction of the Pearl River Delta Forest Urban Agglomeration are greater than the social health benefits and greater than the physical health benefits.(3)Considering the endogeneity issue,sample selection bias,substitution estimation model,and the results of the placebo test,the above conclusion is robust.(4)The examination of the mechanism of action reveals that the construction of the Pearl River Delta Forest Urban Agglomeration can enhance public health levels by improving air quality and increasing the availability of green space.Based on this,policy inspirations are proposed from three aspects:optimizing the planning and implementation mechanism of forest urban agglomerations construction,promoting the synergy of ecological service functions and health benefits in forest urban agglomerations construction,and improving the public participation and health education system for forest urban agglomerations construction.