随着全球气候不断变化带给人类社会威胁的不断加大,低碳经济的概念已经被全社会所关注和接受。日前,我国政府宣布了控制温室气体排放的行动目标,即到2020年实现单位国内生产总值(GDP)二氧化碳排放比2005年下降40%至45%。建设领域涵盖范围广泛,涉及 As the global climate is constantly changing to the threat of human society continues to increase, the concept of low-carbon economy has been the concern of the whole society and accepted. Recently, our government announced the action target of controlling greenhouse gas emissions, that is, by 2020 carbon dioxide emissions per unit of GDP will drop by 40% to 45% from 2005 levels. Construction covers a wide range of areas involved