中文摘要：

资源节约和环境友好的发展方式是当前中国践行可持续发展理念的主要途径,如何定量评价＂两型城市＂也就成了一个亟待解决的重要课题。本文通过构建脱钩分析模型探讨第二产业GDP增长与能源消费和废物排放的相关关系及脱钩程度,以定量评价南昌市1991年-2010年＂两型城市＂的发展,结果表明：①1991年-1995年和2001年-2005年南昌市第二产业GDP增长与能源消费均处于扩张性负脱钩状态,1996年-2000年和2006年-2010年分别为强脱钩和弱脱钩,能源效率的提高是目前南昌市实现弱脱钩的主要原因,但未能抵消工业发展对能源需求的增长幅度;②尽管工业尤其是重工业对环境的压力不减,但1991年-1995年和2001年-2010年南昌市第二产业GDP增长与废物排放均呈现弱脱钩状态,尤其以1996年-2000年为强脱钩状态,这说明南昌对环境污染的治理效果显著,有效改善了城市环境。南昌市在＂两型城市＂的建设过程中,必须在促进传统产业的技术提升的同时,以半导体照明、光伏、服务外包三大产业为重点加快推进低碳经济发展,以实现可持续发展。

英文摘要：

Resource-saving and environmentally friendly development is the most effective road to sustainable development in China and presents a new idea in development for Chinese cities. This development model can address increasing problems such as resource shortages and polluted environments. The connotation of a resource-saving and environmentally friendly city is that it decouples resource consumption and emission outputs; but how to quantitatively analyze and evaluate the development of resource-saving and environmentally friendly cities remains an important issue. The decoupling analysis model has become an effective tool to measure the sustainability of the coordinated development between economic growth and environment pressure. To quantitatively evaluate the development level of the resource-saving and environmentally friendly city of Nanchang between 1991-2010, we constructed a decoupling analysis model to describe the relationship and decoupling status between increases in secondary industry GDP and energy consumption and waste discharge. The results showed that the increase in secondary industry GDP and energy consumption and waste discharge in Nanchang city maintained an expansive negative decoupling status between 1991-1995 and 2001-2005, a stronger decoupling status from 1996-2000, and a weak decoupling status between 2006-2010. Decoupling extent fluctuated strongly with changes in the macroscopic economic situation and policy regulation. The elevation of energy efficiency was the main cause for a weak decoupling in Nanchang city, but this could not offset the growth in energy consumption demands because of industrial development.The increase in secondary industry GDP and waste discharge across Nanchang city followed a weak decoupling status between 1991-1995 and 2001-2010, and had an especially strong decoupling status from 1996-2000. Methods of controlling environmental pollution in Nanchang have achieved excellent outcomes and effectively improved the urban ecological environment; but to achieve the ove