基于GIS网络分析的雅安市雨城区城市公园可达性研究

发布时间：2019-04-24 15:41

【摘要】：城市公园是城市公共服务体系的重要内容,是城市居民休闲、游憩的重要场所,具有生态、社会、经济等多重功能。城市公园可达性成为体现公平和平等成为衡量城市现代化建设水平的重要指标。研究城市公园可达性衡量城市公园服务范围大小,为城市公园发展提供参考,提升城市公园服务功能具有重要意义。本文利用Arcgis平台,对雅安市雨城区中心城区的城市公园可达性进行探讨,通过网络分析法对现状和远景两个时期的城市公园在步行、自行车、机动车方式下的可达性进行研究,并对三种交通方式下的可达性成果进行纵向、横向对比并结合居民区进行分析。在此基础上,利用缓冲区分析法对步行可达性进行研究从而核实网络分析结论。论文研究取得的主要成果如下:(1)纵向对比结果为:现状步行合理时间城市公园可达性面积占比约5.76%,自行车合理时间可达范围约17.36%,机动车合理时间可达范围约30.71%,远景可达性范围有所增加,步行合理时间城市公园可达性面积占比达到16.02%左右,自行车约45.09%,机动车约为51.48%。(2)横向对比结果为:步行方式下,远景比现状可达性范围增加,1级远景比现状可达性面积占比增加2.91%;2级远景比现状增加7.35%;3级远景比现状增加8.97%;4级远景比现状增加9.27%。自行车方式的城市公园可达性面积占比,1级远景比现状高15.09%;2级远景比现状增加12.64%;3级远景比现状降低5.81%;4级远景比现状降低4.07%。机动车方式的城市公园可达性面积占比,1级远景比现状增加26.04%;2级远景比现状降低5.28%;3级远景比现状降低4.64%。(3)结合居民区分析结论:步行合理可达范围居民区面积覆盖比从现状的15.05%上升至远景49.50%;自行车方式下从60.33%上升至92.30%;机动车方式下从75.78%上升至99.75%。(4)优化及论证结论:对雨城区远景条件下依旧缺失的区域,通过CAD寻找缺失区域质心,合理调整质心位置后,通过居民最常用的步行方式进行结果论证,城市公园步行合理可达范围内所覆盖的居住区面积比例从远景的49.50%左右提升到57.52%左右,可达性水平明显提升,且空间布局更加合理,服务范围更加体现公平。
[Abstract]:Urban park is an important part of urban public service system and an important place for urban residents to relax and relax. It has multiple functions such as ecology, society, economy and so on. The accessibility of urban parks has become an important index to measure the level of urban modernization. It is of great significance to study the reachability of urban parks to measure the service scope of urban parks, to provide references for the development of urban parks, and to improve the service function of urban parks. In this paper, the reachability of urban parks in Yucheng District of Yaan City is discussed by using Arcgis platform, and the reachability of urban parks in walking, cycling and motor vehicles in the two periods of current situation and prospect is studied by means of network analysis. The results of reachability under three traffic modes are compared vertically and horizontally and analyzed in combination with residential areas. On this basis, the buffer analysis method is used to study the reachability of steps so as to verify the network analysis conclusion. The main results obtained in this paper are as follows: (1) the longitudinal comparison results are as follows: the proportion of reachable area of urban park is about 5.76%, and the reasonable time of bicycle is about 17.36%, which is about 5.76% of the total reachability area of urban park at reasonable walking time. The reasonable time range of motor vehicles can reach about 30.71%, the range of long-range accessibility has increased, the proportion of reachability area of urban parks in reasonable walking time has reached about 16.02%, and the proportion of reachable areas of bicycles is about 45.09%. (2) the horizontal comparison results show that: in walking mode, the range of vistas is higher than that of present situation, and the proportion of reachability area of grade 1 is 2.91% higher than that of present situation; The level 2 prospect is 7.35% higher than the present situation, the third grade is 8.97% higher than the present situation, and the level 4 is 9.27% higher than the present situation. The reachability area of the city park with bicycle mode is 15.09% higher than the present situation, 15.09% higher than the present situation, 12.64% higher than the present situation, 5.81% lower than the present situation, 4.07% lower than the present situation. The reachability area of urban parks with motor vehicle mode accounted for 26.04% and 5.28% lower than the present situation, and the level 1 perspective was 26.04% higher than that of the present situation. (3) combined with residential area analysis, it is concluded that the coverage ratio of residential area can be reached reasonably by walking from 15.05% to 49.50% of the current situation; (3) combined with residential area analysis, the coverage ratio of residential area is increased from 15.05% to 49.50%; Bicycle mode from 60.33% to 92.30%; The motor vehicle mode increased from 75.78% to 99.75%. (4) Optimization and demonstration conclusion: after looking for the missing center of mass through CAD and adjusting the position of the centroid reasonably, the region still missing under the long-term condition of Yucheng District is optimized and demonstrated. According to the results demonstrated by the most commonly used walking methods of residents, the proportion of residential areas covered within the reasonable range of walking in the city park has been raised from 49.50% of the prospective to 57.52%, and the reachability level has obviously increased. And the space layout is more reasonable, the service scope is more embodiment fair.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P208;TU986

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