Quantitative Analysis Of Spatial Quality Of Xu Xiaohe Park In Hefei City

In the development of urban parks in the past few decades,many cities have successively carried out various forms of urban park design,and devoted a lot of energy to building urban parks within the city.In large-scale construction,urban parks have exposed a series of problems such as the same form of parks,no features,unrealistic design of parks,and lack of humanity in space design.Their production is mainly due to the lack of a comprehensive and correct understanding of what is a good urban park space environment and how to create a good urban park space environment through urban park design.Therefore,how to objectively and quantitatively evaluate the urban park space,to improve the quality of urban parks in a targeted manner,and to create a high-quality living environment is of great research value.This paper firstly expounds the development process and background of space quality research at home and abroad from the perspective of space quality,and expounds the related concepts of space,urban space,urban park and urban park space quality,which is the later Xu Hehe of Hefei City.The theoretical basis of the quality of park space provides a theoretical basis;through the study of space quality theory,14 factors that effectively consider the spatial quality of urban parks are summarized.Using Pearson correlation analysis and cumulative logistic regression model,five aspects of quantifying the spatial quality of urban parks were determined.Finally,taking Xu Xiaohe Park in Hefei as an example,the space quality theory is applied to the spatial quality quantification of Xu Xiaohe Park,using processing programming software,ArcGIS10.5 geographic information platform,Python crawler software,Depthmap plug-in and SPSS 15.0 data statistics software.The quantitative analysis and analysis of the spatial structure factors,spatial aggregation factors,spatial scale factors,spatial accessibility factors and subjective psychological factors of Xu Xiaohe Park are carried out to find out the spatial quality problems of Xu Xiaohe Park.Based on this,the strategy of improving the space quality of Xu Xiaohe Park is proposed.The green space structure of the park is analyzed by measuring the greening rate,green coverage rate and greening volume ratio of the Xu Xiaohe Park in Hefei City.Then use the quantitative analysis of density values,vergence and pattern reports to achieve spatial agglomeration.Reanalysis of the spatial sequence,path sequence and water space of Xu Xiaohe ParkThe relationship between the scale and the behavior of visitors.In terms of accessibility,through the acquisition of data such as the number of bus stations,the number of subway stations,the density of road networks,and the degree of global integration,the convenience of citizens to reach parks and park space nodes is quantified.Finally,through the analysis of the average semantics of park space perception,the subjective factors of park space quality are quantified.The results of the study are as follows:(1)The green space structure designed by Xu Xiaohe Park in Hefei City did not meet the requirements.In the horizontal structure,the green rate of the park was 72.6%,which did not meet the 80%requirement in the specification.In the vertical structure,the greening ratio of the multi-layer structure is calculated to be 10.53:5.67:18.44:29,and the arbor ratio Qb(10.53)is in the C category,which is an unsuitable proportion;the shrub ratio Gb(5.67)is in the B category,which is the basic suitable ratio.The lawn ratio Cb(18.44)is in category A,which is a suitable ratio.In general,the green space structure of Xu Xiaohe Park in Hefei City needs further improvement.(2)The overall nearest neighbor ratio of the Xu Xiaohe Park node space is NNI=0.769<0.8,which indicates that the spatial distribution of the Xu Xiaohe Park node is in a state of aggregation-random distribution,and the current concentration is not strong.The Z test value of each node is less than-2.58 or greater than 2.58,and the confidence level is 99%,indicating that the test results have statistical significance.(3)The area of the park space node is generally larger than 10000m2,and the path distance between nodes is generally greater than 220m(the comfortable walking distance of people),and the spatial scale is generally large.Later program modifications need to be adjusted.The spatial scale of the water space is moderate,and the shoreline is more lively,suitable for tourists to play.(4)In the buffer area of the park with a radius of 500m,there are only 22 bus stops near Xu Xiaohe Park,3 subway stations,and the road network density is 2.94km/km2.The main sites are located in the northern scenic spot,and the southern scenic spot is seriously insufficient.In the later stage,it is necessary to increase the construction of traffic facilities in the southern scenic spot.Through the analysis of the integration degree of Xu Xiaohe Park,the spatial node design of Xu Xiaohe Park is more reasonable.(5)The richness of the historical elements of Xu Xiaohe Park and the cultural characteristics of the essays The average semantic value of space perception is-0.7 and-0.32,which is lower than the average value,which may be based on the depth and breadth of the designer’s mining of historical elements.The rest are positive,in line with the psychological needs of visitors.In the later deepening design,the historical elements of Xu Xiaohe need to continue to dig deeper.