2008年8月28～30曰，“励华国际瓦楞展2008中国展”（Sino—Corrugated 2008 China Show）将在广东现代国际展览中心隆重拉开帷幕。
这将是2008年度全球瓦楞纸箱行业颇具规模及影响力的盛会之一，也是继2007励华国际瓦楞展之后，国内...2008年8月28～30曰，“励华国际瓦楞展2008中国展”（Sino—Corrugated 2008 China Show）将在广东现代国际展览中心隆重拉开帷幕。
这将是2008年度全球瓦楞纸箱行业颇具规模及影响力的盛会之一，也是继2007励华国际瓦楞展之后，国内唯一一个以“瓦楞纸箱”为主题的专业展会。展开更多
The key to studying urban sustainable development depends on quantifying stores, efficiencies of urban metabolisms and capturing urban metabolisms′ mechanisms. This paper builds up the metabolic emergy account and qu...The key to studying urban sustainable development depends on quantifying stores, efficiencies of urban metabolisms and capturing urban metabolisms′ mechanisms. This paper builds up the metabolic emergy account and quantifies some important concepts of emergy stores. Emphasis is placed on the urban metabolic model based on the slack based model(SBM) method to measure urban metabolic efficiencies. Urban metabolic mechanisms are discussed by using the regression method. By integrating these models, this paper analyzes the urban metabolic development in Beijing from 2001 to 2010. We conclude that the metabolic emergy stores of Beijing increased significantly from 2001 to 2010, with the emergy imported accounting for most of the increase. The metabolic efficiencies in Beijing have improved since the 2008 Olympic Games. The population, economic growth, industrial structures, and environmental governance positively affect the overall urban metabolism, while the land expansion, urbanization and environmentally technical levels hinder the improving of urban metabolic efficiencies. The SBM metabolic method and the regression model based on the emergy analysis provide insights into the urban metabolic efficiencies and the mechanism. They can promote to integrate such concepts into their sustainability analyses and policy decisions.展开更多
文摘2008年8月28～30曰，“励华国际瓦楞展2008中国展”（Sino—Corrugated 2008 China Show）将在广东现代国际展览中心隆重拉开帷幕。
这将是2008年度全球瓦楞纸箱行业颇具规模及影响力的盛会之一，也是继2007励华国际瓦楞展之后，国内唯一一个以“瓦楞纸箱”为主题的专业展会。
基金Under the auspices of National Natural Science Foundation of China(No.41371008,41101119)New Start Academic Research Projects of Beijing Union University(No.ZK201201)
文摘The key to studying urban sustainable development depends on quantifying stores, efficiencies of urban metabolisms and capturing urban metabolisms′ mechanisms. This paper builds up the metabolic emergy account and quantifies some important concepts of emergy stores. Emphasis is placed on the urban metabolic model based on the slack based model(SBM) method to measure urban metabolic efficiencies. Urban metabolic mechanisms are discussed by using the regression method. By integrating these models, this paper analyzes the urban metabolic development in Beijing from 2001 to 2010. We conclude that the metabolic emergy stores of Beijing increased significantly from 2001 to 2010, with the emergy imported accounting for most of the increase. The metabolic efficiencies in Beijing have improved since the 2008 Olympic Games. The population, economic growth, industrial structures, and environmental governance positively affect the overall urban metabolism, while the land expansion, urbanization and environmentally technical levels hinder the improving of urban metabolic efficiencies. The SBM metabolic method and the regression model based on the emergy analysis provide insights into the urban metabolic efficiencies and the mechanism. They can promote to integrate such concepts into their sustainability analyses and policy decisions.
