基于可达性的长春市公园绿地格局优化

摘要

The reachability of urban green space is an important factor affecting the efficiency of green land use,and also is an important basis for the construction of green space. Taking the central urban area of Changchun city as the researched area, based on the data of urban residential land and population distribution,using GIS spatial analysis technique,using the population gravity center model based on population weight,the author simulated the pattern of newly-increased green land in the researched area, generated the new spatial distribution of green space pattern by using the method of buffer analysis,and quantitatively ana-lyzed and evaluated the results. The optimized scheme of park green space pattern in Changchun increased the reachable popula-tion of park green space by 50.3 percent,and enhanced the reachable park green space area by 22.5 percent under the condition of increasing park green space area by 5.5%.%城市绿地可达性是影响绿地使用效率的一个重要因素,也是绿地建设合理的重要依据.以长春市中心城区为研究区域,以城市居住用地和人口分布数据为基础,通过GIS空间分析技术,采用基于人口权重的人口重心模型,模拟研究区内新增绿地格局,并利用缓冲区分析方法生成新的绿地格局空间分布,对结果进行定量的分析与评价.结果表明:优化方案在公园绿地面积增加5.5%的情况下,公园绿地的可达性人口增加了50.3个百分点,可达性面积增加了22.5个百分点.