基于主因子分析的生态社区评价方法研究——以上海外环以内区域为例

A Study on Evaluation of Ecological Community Based on Principal Component Analysis Method——A case study within outer ring road of Shanghai City

从生态系统和可持续发展理论出发,构建了生态社区评价的指标体系,运用主因子分析方法建立了生态社区评价模型;并在遥感与GIS技术支持下,对上海中心城区做了生态社区评价研究。结果表明,在空间格局上,社区生态水平差异明显,无论是在社区内部还是社区之间,各主因子分布极不平衡;总体看来,浦西核心区的大部分社区,其规模结构比较合理,服务设施比较完善,然而部分社区的生态环境质量急需要改善,部分社区的居住条件也需要进一步完善;而浦东一些社区,尽管生态指数较高,生态环境质量较好,但由于基础配套设施不够健全,规模结构不够均衡,道路交通系统尚待进一步完善。

Based on the ecological system and sustainable development theory, he indicator system and model for evaluation of ecological community were designed by using principal component analysis method and Remote Sensing/Geographical Information System technology. The evaluating computation was applied in the case study area within outer ring road of Shanghai City. The results show that： （1） there are disparities of communities within outer ring road of Shanghai City. The score of components spread unevenly within one community or between different communities. （2） In the central area of Puxi, the commonality serving establishments of most communities are perfect, but the housing condition and ecological environment of some communities need further improvements. （3） Although it shows high ecological index and ecological environment quality at some communities in Pudong area, due to the imperfect commonality serving establishments, public traffic system still need to be ameliorated.