熵变视角的城市生态系统可持续发展能力评价——以长沙市为例

Evaluation of the Sustainable Development Ability of the Urban Ecosystem from the Perspective of Change——Taking Changsha City as an Example

通过分析城市生态系统的结构、功能和特征,构建了城市生态系统可持续发展能力评价指标体系和城市生态系统可持续发展能力评价模型;结合指标信息熵,从熵变视角,对长沙市城市生态系统可持续发展能力进行评价分析,研究结果显示:长沙市社会经济生态系统的无序度缓慢增大,多样性和复杂性不断提高,对自然生态系统的需求压力逐年上升;长沙市城市自然生态系统对社会经济系统的支持能力总体逐渐增大,生态环境的改善使长沙市城市生态系统的协调性和活力得到增强,城市生态系统可持续发展能力波动上升。

The evaluation index system of sustainable development ability of the urban ecosystem is formed based on the structures, functions and features of the urban ecosystem. With the index information entro- py, this paper deals with the sustainable development ability of the urban ecosystem of Changsha city from the perspective of change, Findings show that the urban ecosystem develops disorderly, the diversity and complexity continue to increase, the ecological environment pressure increases every year. Besides, the sustainable development ability of the urban ecosystem is on an upward trend, the coordination and the vi- tality are enhanced, and the sustainable development ability of the urban ecosystem is improved.