摘要
为指导社区生活圈形成绿色出行建成环境,从社区建成环境层面定量解析小汽车使用行为的差异,通过停车场泊位利用率客观反映小汽车使用行为,构建了考虑非线性效应的梯度提升决策树(Gradient Boosting Decision Tree,GBDT)模型,以重庆市主城区停车调查数据中的居住区配建停车场为实证对象,构建以居住区为核心的社区生活圈作为建成环境的测度范围,实证结果表明:GBDT模型比线性假设的OLS模型具有更好的拟合度;建成环境指标贡献度方面,距离商圈的距离(14.30%)、人口密度(14.20%)、土地利用混合度(12.60%)对泊位利用率影响最大,反映其对小汽车使用行为的重要影响效应;在建成环境指标的非线性关系方面,建成环境因子与泊位利用率均具有非线性关系.
In order to guide the green travel and green built environment in the community living circle,this paper quantitatively analyzes the differences in car usage behavior in the community built environ⁃ment.Then the car usage behavior is objectively reflected by the parking space utilization rate,and the Gradient Boosting Decision Tree(GBDT)model is built that takes into account the nonlinear effect.The GBDT model takes the equipped parking lot data within the residential area of Chongqing’s main urban area in the parking survey as the empirical object,and builds a community living circle with the residential area as the core,which acts as the measurement range of the built environment.The empiri⁃cal results show that the GBDT model has a higher fit than the linear assumption OLS model;regard⁃ing the contribution of built environment indicators,the distance to the shopping area(14.30%),popu⁃lation density(14.20%),and land use mixture(12.60%)have significant effect on the parking space utilization rate,reflecting its great impact on the car usage behavior.Regarding the non-linear relation⁃ship between built environmental indicators,all built environmental factors have non-linear relation⁃ships with the parking space utilization rate.
作者
刘柯良
陈坚
祝烨
彭涛
邱智宣
LIU Keliang;CHEN Jian;ZHU Ye;PENG Tao;QIU Zhixuan(School of Traffic&Transportation,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Municipal Research Institute of Design,Chongqing 400014,China)
出处
《北京交通大学学报》
CAS
CSCD
北大核心
2022年第3期49-56,共8页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
重庆市教育委员会科学技术研究计划项目(KJQN202001611)
重庆市教委“成渝地区双城经济圈建设”科技创新项目(KJCXZD2020029)
重庆交通大学研究生科研创新项目(CYS21354)。
关键词
交通运输系统工程
建成环境
停车场
使用行为
梯度提升迭代决策树
非线性关系
transportation system engineering
built environment
parking lot
usage behavior
gradi⁃ent boosting iterative decision tree
non-linear relationship