北京批发企业空间格局演化与区位选择因素
韩会然,杨成凤,宋金平

Impact factors of location choice and spatial pattern evolution of wholesale enterprises in Beijing
HAN Huiran,YANG Chengfeng,SONG Jinping
图2 不同时间段北京批发企业空间核密度分析
Fig. 2 Kernel density analysis of wholesale enterprises of Beijing in different periods