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可达性是研究绿地建设水平的重要指标,在现有研究的基础上将绿地可达性归纳为基于人口的绿地可达度和基于路网的绿地可达距离2种类型,以广州中心城区为例对两者进行比较分析。研究表明:基于2种方法的广州中心城区绿地可达性存在数值大小、等级和空间分布3个方面的差异,相对来说基于人口的绿地可达度数值偏小、等级差距大、空间分布不均衡,而基于路网的绿地可达距离则表现出相反的特征。据此将广州中心城区划分为3个绿地可达性类型区:人口-路网可达性一致的类型区,人口可达性高-路网可达性低的类型区,人口可达性低-路网可达性高的类型区。最后针对广州中心城区绿地可达性分析特征提出了4条对策建议:增加绿地总量,提高绿地供给;优化布局,结合绿地可达性类型区的划分,实施分区管理;分类管理,优化绿地配置;提高绿斑密度,增强绿地可进入性。
Accessibility is an important index for researching the construction level of green space. Based on the existing research, the green accessibility is summed up as the accessibility of green space based on population and the reachable distance of green space based on road network. Taking Guangzhou downtown area As an example to compare the two. The results show that there are three differences in the green space reachability of downtown Guangzhou based on the two methods. Relatively speaking, the accessibility of green space based on population is small, the level gap is large, and the spatial distribution is not Balanced, while the green space based on road network shows the opposite characteristics. Based on this, the downtown area of Guangzhou is divided into three types of green space accessibility areas: type areas with consistent population and road network accessibility, high population accessibility - type areas with low network accessibility, low population accessibility - Type area with high reachability. Lastly, four countermeasures and suggestions are put forward for the analysis of green space reachability of downtown Guangzhou: to increase the total amount of green space and improve the supply of green space; to optimize the layout and implement the zoning management according to the division of Green Reachability Type Zones; to classify management and optimize green space allocation ; Increase the density of green spots and enhance the accessibility of green space.