An Empirical Studv On The Impacting Mechanism Of The Individual Decision Behavior On The Effectiveness Of Spatial Plan Implementation

It is one of the important missions for planning managers and relevant scholars to explore the influencing mechanism and improvement path of the implementation effectiveness of planning.In the process of the transition from planned economy to market economy,the spatial demand of land use subject in China is becoming more and more diversified,which brings more challenges to the planning and management issues.Moreover,a large number of spatial planning practice results show that,with the diversification of stakeholders in the process of planning implementation,the effectiveness of planning implementation depends on guidance and control ability of the planning to subject's land use decisions to a large extent.Therefore,in order to improve the effectiveness of planning implementation and reveal the influencing mechanism of planning implementation effectiveness,the research perspective of planning implementation evaluation should be changed from macro to micro,and the research object should also be changed from single subj ect to multiple subj ects.Due to the change of research perspective and obj ect,it is necessary to explore a new planning implementation evaluation system based on multiple subjects and an analysis framework for the decision-making behavior of planning implementation.The measurement of planning implementation effectiveness and its influencing mechanism are two core issues in the study of planning implementation evaluation.This dissertation took the general land use planning as the research object,and analyzed the connotation and composition of planning implementation effectiveness from the perspective of externality.Based on this,a subject-based measurement system of planning implementation effectiveness was constructed.Taking the central urban area of nanning city as the research area,the implementation effectiveness of subj ect-based land use planning was evaluated by Python programming based on ArcGIS platform.In addition,by building an analysis framework of planning implementation behavior based on the decision-making behavior of the subject,this dissertation further explored the influencing mechanism of location characteristics,subject type characteristics,project attribute characteristics and behavior characteristics of neighboring subjects on the decision-making behavior of land use in the process of planning implementation..The main research results and conclusions of this dissertation are as follows:(1)Controlling and reducing the negative public externalities of land use is the legitimacy and mission of spatial planning.Thus,the control effect of public negative externalities can be used as a measure of the implementation effectiveness of spatial planning.From this perspective,the implementation effectiveness of spatial planning reflects,to some extent,the influencing direction and extent of land use behavior of each subject on public externalities under the guidance and control of planning.The implementation effectiveness of spatial planning consists of internal validity and external validity.Among them,the internal validity is the core of spatial planning consistency evaluation,and the measurement result is helpful to judge whether the planning implementation reduces the negative public externality and promotes the positive public externality.External validity is a manifestation of the implementation performance of spatial planning,which reflects the impact of land use externalities on the overall social welfare under the implementation of spatial planning.(2)Based on the"Nanning General Land Use Planning(2006-2020)",this dissertation took land uses in the city center(especially non-agriculturalization process of farmland)as the research object,and the land use behaviour of each subject was taken as the evaluation unit.Based on the analysis of the consistency and compatibility between land use and the dominant use of planning control zone,and the compatibility between land use and surrounding land uses,a subject-based measurement system for planning implementation effectiveness was constructed.The empirical results showed that both the mean and median of the implementation validity of the subject-based general land use planning exceed the baseline.This means during the implementation of the Nanning General Land Use Planning,the planning did play its guiding and controlling role in the decision-making behavior of subjects in the central urban areas.(3)Heterogeneity and bounded rationality are two basic characteristics for the subject of planning implementation.Based on this,it is necessary to relax the hypothesis of homogeneous subjects when discussing the influencing mechanism of planning implementation at the subject level.Moreover,the planning implementation environment is a complex environmental system composed of social environment,economic environment and natural ecological environment of land.The result of planning implementation is a set of land use decision-making behaviors made by multiple subjects after interacting with the spatial planning system and other planning implementation subjects.Therefore,this dissertation constructed an analysis framework of the decision-making behavior of the subject planning implementation through combining location characteristics,subject characteristics,project characteristics and behavior characteristics of neighboring subj ects.(4)The empirical study results showed that location characteristics,subject characteristics and project characteristics all significantly affect the subject decision-making behavior of planning implementation.The subj ect of planning implementation is bounded rational,and their planning implementation preference is not stable and invariable.Moreover,the project characteristic is a strong intervention signal of planning implementation,which will affect the behavior of the subject during the planning implementation.It is found that there was an interaction effect between subj ect characteristics and project characteristics.If the land use subject type is the "land development subject" and the project characteristic is the "key project",the probability of high validity of planning implementation would be significantly reduced.(5)In addition,the empirical study also found that the spatial distribution and agglomeration characteristics of the planning implementation behaviors of diverse subjects were also different,which showed obvious spatial differentiation patterns.Moreover,in the process of planning implementation,there was a time transitivity phenomenon,and the current land use decision-making behavior will influence the decision-making behavior in the next time point.In addition,the planning implementation behavior also has a spatial transitivity phenomenon,and the adjacent land use decision-making behaviors will significantly affect the land use decision-making behavior of the target subject.