CAJ | 학술논문

本文采用能值分析和数据包络分析方法,构建了城市物质代谢生态效率的度量模型,从代谢流量和生态效率两个角度评价了南京市生态经济系统1990～2010年间的可持续发展情况。结果表明：（1）21年来,南京地区的能值产出率和可持续指标不断降低,环境负载率呈持续增长趋势;（2）南京城市系统生态效率总体呈波动上升趋势,1990～2006年间资源生态效率一直低于环境生态效率,2006年后开始有所提升。虽然南京市生态效率有所提高,但未来的发展面临快速增长的环境压力等阻碍。为此,南京应优化进口能值组成,加大可更新资源开发力度,提高不可更新资源利用率,实现废弃物资源化等。
본문채용능치분석화수거포락분석방법,구건료성시물질대사생태효솔적도량모형,종대사류량화생태효솔량개각도평개료남경시생태경제계통1990～2010년간적가지속발전정황。결과표명：（1）21년래,남경지구적능치산출솔화가지속지표불단강저,배경부재솔정지속증장추세;（2）남경성시계통생태효솔총체정파동상승추세,1990～2006년간자원생태효솔일직저우배경생태효솔,2006년후개시유소제승。수연남경시생태효솔유소제고,단미래적발전면림쾌속증장적배경압력등조애。위차,남경응우화진구능치조성,가대가경신자원개발력도,제고불가경신자원이용솔,실현폐기물자원화등。
In this paper, the methods of emergy analysis and data envelopment analysis （DEA） were adopted to establish a measurement model of eeoefficieney of urban material metabolism. The sustainable development of eeo-eeonomy system in Nanjing City during 1990 -2010 was evaluated in the respects of metabolic flux and eeoefficiency. The results showed：（1） in the last 21 years, the energy yield rate and sustainability index were continually reducing, while environmental loading rate was increasing constantly; （2） eeoeffieieney kept an increasing trend as a whole, and the resource ecoetticiency had been lower than environmental ecoeffficiency during 1990 - 2006. Since then in spite of the increasing ecoefficieney, the development faced an obstacle of speedy increasing environmental pressure. Therefore some measures should be taken in Nanjing such as optimizing the input composition of emergy, strengthening development of renewable energy, improving utilization rate of nonrenewable resources and promoting wastes reusing.