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中文摘要：
城市公园绿地是城市绿色基础设施的重要组成部分，是城市居民主要的休闲游憩场所，具有重要的生态、社会文化功能。本文以武汉市公园绿地为研究对象，运用两步移动搜索法（2SFCA）计算研究区内居民基于公共交通方式下的公园绿地可达性，采用反距离加权插值法分析公园绿地可达性的空间集聚特征。研究结果表明：1）研究区内公园可达性优劣水平差异较大，呈现出中心城区内居民点公园可达性的两极分化特征，空间上表现出由东向西不断减小的梯度递减格局。2）基于公共交通方式下区内居民点的可达性和公园绿地的空间分布在一定程度上呈现出空间失配，中心城区西北部和中部人口集中区域公园可达性水平较差。
英文摘要：
City Park green space is an important part of urban green infrastructure and it is urban residents＇ main recreational place, which has important ecological, social and cultural functions. Treating Wuhan city park green space as the research object, the paper use 2SFCA to calculate the park green space accessibility based on public transport. Results demonstrate that ： （ 1 ） The level of park accessibility makes big difference in research area, showing the characteristics of internal polarization of housing estates＇ park accessi- bility in the city center, which＇presents gradient decreasing pattern falling from the east to the west. （2） The housing estates＇ park ac- cessibility and the spatial distribution of park green space presents spatial mismatch to some extent based on public transportation, the level of park accessibility in the northwest and central urban center regions where population is concentrated is poor.
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