县市分等方法及中国县市等第特征的分异规律 |
李一飞, 王开泳, 王甫园 |
Classification method for counties and cities' gradation and differentiation rule in China |
LI Yifei, WANG Kaiyong, WANG Fuyuan |
图1 省域尺度分等的各等第县市空间分布 注:基于自然资源部标准地图服务系统的标准底图(审图号:GS(2019)1697号)制作,底图无修改。 |
Fig. 1 Spatial distribution of different gradations of the counties and cities at the provincial level |
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