城市生态系统现状评价的生命力指数

鉴于城市生态系统的生命特征，采用比拟思想，引入城市生命体概念到城市生态系统现状评价中，以全面而形象地反映城市生态系统的发展状况。构建了包括生产力、生活态、生态势和生机度的城市生命力指数框架，并进一步给出了具体的评价指标体系、评价模型及评价结果分级标准。以重庆万州为例，开展了城市生命力指数评价的案例研究。评价结果表明，2000～2005年间，万州城市生命力指数处于较衰弱状态，但一直在平稳上升，应通过一定的生态规划措施，提高万州城市生态系统的生产力、生活态、生态势及生机度，尤其要注重增强生态系统的生机与活力，以实现城市生命力的继续提升。

he vitality index method for urban ecosystem assessment

To describe the vital characteristics of the urban ecosystem, the analogy of urban vital organism is introduced in this paper to vividly and systematically assess the urban ecosystem evolution. The framework of urban vitality index including productivity power, living status, ecological ascendancy and vital force, which respectively represents the situation of urban economic subsystem, social subsystem, natural subsystem and ecological regulatory subsystem, is also constructed. Accordingly, the concrete index system, model and gradation standard are proposed to assess the urban vitality, with the Wanzhou district of Chongqing city being chosen as a case study. The results indicate that the urban vitality indices of Wanzhou district during 2000-2005 are in the relatively weak grade with gradual improvement. It is therefore suggested that ecological planning measures on productivity power, living status, ecological ascendancy and vital force be implemented, in which the promotion of vital force of the urban ecosystem should be emphasized, to improve the urban vitality.