基于生态位理论的城市生态位变化分析——以广西南宁市为例

生态位理论作为生态学的基本理论已被广泛引用到社会科学领域的研究之中。从城市生态系统的经济发展、社会发展和自然生态环境3个方面构建了南宁市城市生态位的评价指标体系，运用主成分分析法探讨近7年来南宁市不同系统生态位格局变化规律，并对变化的原因进行了分析。结果表明：2001－2007年，南宁市生态位总体上呈波浪上升的趋势；环境生态位呈下降趋势，但2004年以来变化比较平缓；社会生态位除2005年有所下降外，其他年份均处于不断上升的发展趋势；经济生态位呈持续上升趋势。

Niche Changes Analysis of the City Niche Based on the Niche Theory

Niche theory as a basic theory in ecology was widely introduced into the research of the social-economical area.The evaluation index system of city niche of Nanning was constructed from three aspects of the economical development, social development and natural ecological environment of urban ecosystem.Using principal components analytic method, the rules of niche pattern change of different systems in the city of Nanning were discussed in recent seven years.And the reason for its changes was analyzed.The results showed that the niche of Nanning City had the tendency of rise as wave in total from 2001 to 2007.While the environmental niche had declined, but the change was relatively flat from 2004;Social niche had been rising in other years except 2005;The economical niche kept continually trend of escalation.