中国人口疏密区分界线的历史变迁及数学拟合与地理意义 |
| 龚胜生,陈云 |
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The historical change, mathematical fitting and geographical significance of demographic borderlines in China |
| GONG Shengsheng,CHEN Yun |
| 图2 中国两千年来人口稀疏区与稠密区的演变 |
| Fig. 2 The evolution of the sparse and dense areas of China's population since the past 2000 years ago |
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