研究结果：(1)引入土地要素后扩展的索洛模型仍然存在平衡增长路径；(2)土地要素对中国经济增长的贡献是显著的，贡献率为11。
The results show that: (1) the Solow model including land element also has a balanced growth path; (2) the contribution of land to economic growth in China is significantly 11.
新模型系统地论述了差异影响下个体城市自中心向外缘扩展的微观经济学机理。
The new model systematically studies the microeconomic dynamics of individual urban expansion to the margin areas under different impactions.
基于此，论文对住宅特征的涵义进行扩展，指出区域的经济、人口等变量也应作为住宅特征纳入住宅特征价格模型。
Because of this, the paper expands the meaning of housing characteristic and points out that the local economic and demographic variables should also be discussed in the housing hedonic price model.
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