对城市绿地指标的分析

传统的绿地指标包括人均公共绿地面积、绿地率、绿化覆盖率等，但这些指标均未对城市绿地的分布均匀度提出要求。要使城市绿地的使用功能得到充分发挥，使居民的亲绿需要得到满足，应该增加绿地分布均匀度的概念，并可以利用洛伦茨曲线作为分析方法，以基尼系数作为指标来测算城市绿地分布均匀程度，从而在城市绿地规划以及在城市绿地建设的比较上形成一个较为合理的参数。通过绿地在城市范围内的均匀分布，使城市绿地景观格局得以优化，使绿地分布更加合理。

Analysis of City Green Space Index

The conventional green space index include the per capita public green space area, the green space ratio, the vegetation ratio and so on, which have not required the homogeneity degree of city green space distribution. The homogeneity degree of green space distribution should be emphasized so as to bring the utilization function of city green space into full play and to meet people's need of being close to the green space. The homogeneity degree could be analyzed through Lorenz curve and Geordie coefficient in order to reach a reasonable parameter in the city green space planning and building. The homogeneity degree can optimize the landscape layout of city green space and the distribution.