摘要
目的研究季节因素对城市公园空间可达性计算结果的影响,优化城市公园供需评价。方法在2SFCA模型基础上,提出季节系数概念,构建季节系数预测模型及季节性搜索半径设置方式;利用API数据获取步行成本,以沈阳市沈河区典型公园为例进行供需比计算。结果显著性季节的供需比值存在衰减,搜索半径的季节分异对搜索结果影响显著;供需比空间布局统计结果及季节可用系数差值表明居住区分布特征、步行成本、公园服务属性与季节因素显著相关。结论季节因素的模型修正能够提升评价结果的准确度;依据季节因素显著相关的影响指标可指导建成公园的更新优化。
Influence of seasonal factors on the evaluation results of space accessibility for urban parks was studied,and the evaluation results of supply and demand of urban parks were optimized.On the basis of the 2SFCA,the concept of seasonal coefficient is introduced to construct a forecast model of seasonal availability coefficient and a setting method of search radius in different seasons.Shenhe District Park in Shenyang City taken as an example,a supply-demand ratio was calculated based on the walking cost of residents from API data.Results showed that the ratio of supply and demand decreased in significant seasons,and the seasonal differentiation of search radius had a significant impact on the search results.The statistical results of spatial layout of supply-demand ratio and the difference of seasonal availability coefficient show that the distribution characteristics of residential areas,walking costs and park service attributes are significantly related to seasonal factors.The model correction based on seasonal factors can improve the accuracy of the evaluation results.At the same time,the renewal and optimization of the built park can be guided according to the impact indicators significantly related to seasonal factors.
作者
陈希
董玉宽
王秋实
CHEN Xi;DONG Yukuan;WANG Qiushi(School of Architecture and Planning,Shenyang Jianzhu University,Shenyang,China,110168;Liaoning Key Laboratory of Urban Information and Spatial Perception,Shenyang,China,110168)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第3期504-511,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(52178045)
住房和城乡建设部软科学研究项目(R20210795)。
关键词
公园绿地
绿地公平
可达性
两步移动搜寻法
季节系数
park green space
green space equity
accessibility
the two-step floating catchment area method
seasonal coefficient
