| Urban green space is an important daily recreational space for urban residents,and allowing more residents to participate in green space recreational activities has always been one of the important goals of urban green space planning and recreational resource management.However,because the traditional green space allocation and planning research is affected by the "material space determinism" thinking stereotype,there is a deviation in the perception of daily recreation opportunities in green space.The default provision of green space can attract people to carry out recreational activities,making the allocation of green space and crowd recreation Mismatches in use have made it difficult to further effectively improve the daily recreational service level of green space.This situation is becoming more and more common with the emergence of new lifestyles and social phenomena such as shortage of leisure time,normalization of overtime,long-distance commuting,separation of work and residence,and home office,and will further intensify.Therefore,it is urgent to break the traditional thinking model of equating "allocation of green space" with "crowd participation in recreation",study such problems from a new perspective,and explore new methods to improve them.In real life,a good external green space environment is only one of the reasons that attract people to green space to carry out recreational activities.However,individual recreational decisions are also restricted by various negative factors,such as no free time due to overtime and lack of recreational companions.Reluctance to go out and the unsafe environment dispel the idea of ??traveling alone.Recreational opportunities will inevitably be weakened by the influence of various constraints.However,the current negative effects of constraints on the academic circles have not been included in the research framework of recreational opportunities.To this end,this thesis takes "restraints" as the cut-in perspective,takes Chengdu’s downtown area as the research area,and develops the theory of daily recreational opportunities in green spaces in accordance with the logical context of "theoretical construction-methodological research-empirical analysis-practical demonstration" Research on four aspects:measurement,genealogy generation and application demonstration.The research is mainly oriented to three key issues:(1)How to incorporate "restrictions" into the analysis framework of recreational opportunities to further understand and recognize the occurrence of daily recreational behaviors in urban green spaces and the recreational opportunities obtained by individuals(cognitive issues);(2)How to quantify the daily recreational opportunities of urban residents in green spaces and extract them to generate a spectrum of recreational opportunities(empirical issues);(3)How to use the spectrum of recreational opportunities to analyze the green space recreation laws of people under current lifestyle changes,and to analyze urban green spaces Targeted optimization of recreational opportunities(problems of application prospects).The research has four aspects of significance:(1)From the perspective of space and nonspatial multiple dimensions of urban daily green space recreational opportunities,deepen the understanding and grasp of the law of green space recreational behavior;(2)To analyze the recreation of urban residents in the process of green space recreation Restriction provides theoretical analysis framework and measurement methods;(3)Provides new theoretical connotations,representation dimensions and application scenarios for the recreational opportunity spectrum;(4)Provides digital and modular green space recreation time and space for Chengdu’s park city planning and construction and scene camps behavioral spectrum analysis methods,auxiliary decisionmaking tools and precise optimization paths.The main research conclusions of this theory are as follows:(1)There are two dimensions of "quality" and "quantity" in the daily recreational opportunities of green space.The understanding of the connotation of holding recreational opportunities can be divided into entity cognitive view,conditional cognitive view and recreation Zoning view(2)The level of participation in urban green space recreation is closely related to recreational opportunities,and the latter is affected by the combination of recreational environmental conditions and recreational constraints.(3)The daily recreational constraints of green space in the central city of Chengdu have spatial and non-spatial dimensions,including time constraints,There are five types of recreational environment facility restriction,travel convenience restriction,recreational companion restriction and intrinsic motivation restriction.Recreational constraints affect the individual’s recreational decision-making and the level of recreational participation through two mechanisms: negotiation and balance and utility accumulation.(4)The daily recreational opportunities of green spaces are combined with recreational spatiotemporal behaviors to extract recreational opportunity modules of different typical groups of people to generate a spectrum of daily recreational opportunities for green spaces.(5)The improvement of daily recreational opportunities for green space in the central urban area of ??Chengdu can be cut from the two aspects of recreational environmental conditions and recreational constraints.The four-dimensional quadrant of recreational opportunities can help optimize the selection of strategies and the precise and efficient implementation of the order.(6)The green space recreation opportunity spectrum is not only an effective refinement of recreational behavior rules,but also an efficient and flexible tool for recreational behavior analysis.By combining the green space daily recreation opportunity module with related spatiotemporal behavior data,the spatiotemporal recreation laws of different groups of people can be visualized,which expands the perspective of urban green space recreation analysis.The main innovations of the thesis are embodied in the following aspects: 1)Theoretical research level: Constructing a theoretical framework of urban green space daily recreational opportunities that incorporates multi-dimensional recreational constraints,further deepening the understanding of the connotation of recreational opportunities,and expanding the traditional recreational opportunity spectrum theory.2)Method content level: The fusion analysis and quantitative measurement methods of daily recreation opportunities in green spaces are proposed,and the digital module classification and extraction of daily recreation opportunities in green spaces and the generation of recreation opportunity spectrum are realized under the spatio-temporal geographic information platform(T-GIS);3)Practical application level: Constructed a spectrum of daily recreational opportunities for green space in downtown Chengdu,proposed quadrant optimization paths and optimized strategy libraries for recreational opportunities,and explored and demonstrated the utilization mode of the spectrum of daily recreational opportunities for green space. |
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