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| 基于改进Ga2SFCA的城市公园绿地可达性与影响机制研究——以合肥市区为例 |
| Research on Accessibility and Impact Mechanism of Urban Park Green Space based on Improved Ga2SFCA: A Case Study of Hefei City |
| 投稿时间：2023-03-11 修订日期：2023-05-21 |
| DOI： |
| 中文关键词: 城市公园绿地 可达性 改进的Ga2SFCA模型 影响机制 |
| 英文关键词: urban park green space accessibility improved Ga2SFCA model influence mechanism |
| 基金项目:安徽省自然科学基金（2008085ME160）；安徽省高校省级自然科学研究项目-研究生项目（YJS20210500） |
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| 中文摘要: |
| 城市公园绿地合理供给是城市生态和民生福祉的重要保障。以合肥市市区为例，提出改进的Ga2SFCA探究不同类型公园绿地的可达性特征及其成因，并运用地理加权回归模型进一步解析公园绿地可达性的影响机制。研究发现：1）改进的Ga2SFCA模型计算的可达性结果在强度和空间分布上较传统模型更加贴合实际；2）公园绿地总体可达性由北至南呈现“低-高-较高”的三级分布态势，可达性高值区域主要分布在一环路西北、东南侧以及二环路西南部政务区；3）各类型公园绿地可达性存在较大差异：综合公园和专类公园的可达性空间分布优于街头游园和社区公园；4）自然特征、区位特征、社会经济和建成环境四方面因素的不同导致公园绿地可达性空间差异显著，各因子影响程度依次为：商业区位>中心区位>交通可达>生活便利>居住人口。 |
| 英文摘要: |
| A reasonable supply of urban park green space is an important guarantee for urban ecology and people's well-being. Taking the Hefei city as an example, proposing an improved Ga2SFCA to explore the accessibility characteristics of different types of park green spaces and their causes, and use GWR model to further analyze the influence mechanism of park green space accessibility. It was found that 1) the accessibility results calculated by the improved Ga2SFCA model are more realistic in terms of intensity and spatial distribution than the traditional model. 2) The overall accessibility of the park green space presents a three-level distribution trend of " lowest -highest-high " from north to south. The high value areas of reachability are mainly distributed in the northwest and southeast of the first ring road and the government affairs center area in the southwest of the second ring road; 3) There are large differences in the accessibility of various types of parks: the spatial distribution of accessibility of comprehensive parks and specialized parks is better than that of street gardens and community parks. 4) The four factors of natural characteristics, location characteristics, socio-economic and built environment lead to significant spatial differences in park green space accessibility, and the degree of influence of each factor is in the following order: commercial location > central location > accessibility to transportation > convenience of living > residential population. |
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