集聚空间组织型式对中国地市尺度工业SO2排放的影响
胡志强,苗长虹,袁丰

Impact of industrial spatial and organizational agglomeration patterns on industrial SO2 emissions of prefecture-level cities in China
HU Zhiqiang,MIAO Changhong,YUAN Feng
图3 2003-2013年中国地市工业集聚密度和企业地理临近度的空间特征
Fig. 3 Spatial patterns of agglomeration level and enterprise' geographic proximity at prefecture-level city from 2003 to 2013