入园率视角下长三角地区化工产业时空格局演化及影响因素
Spatial-temporal variation of chemical industry and its influencing factors in the Yangtze River Delta from the perspective of industrial park admission rate of chemical enterprises
入园率视角下长三角地区化工产业时空格局演化及影响因素 |
| 纪学朋, 宋娅娅, 孙延伟, 王丹阳, 孟浩, 李升峰, 黄贤金 |
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Spatial-temporal variation of chemical industry and its influencing factors in the Yangtze River Delta from the perspective of industrial park admission rate of chemical enterprises |
| JI Xuepeng, SONG Yaya, SUN Yanwei, WANG Danyang, MENG Hao, LI Shengfeng, HUANG Xianjin |
| 图3 长三角地区化工企业均值中心与标准差椭圆分析 |
| Fig. 3 Mean center and standard deviational ellipse of chemical enterprises in the Yangtze River Delta |
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