摘要
全球变暖已成为人类亟待解决的问题,而解决该问题的关键在于减少全球CO2、CH4和N2O等温室气体的排放。基于生命周期评价方法,将河道护岸工程生命周期全过程划分为材料生产、材料运输、施工建设、维护管理、拆毁处置(或回收)5个单元,进行了河道护岸工程生命周期碳排放来源分析,提出了适合于河道护岸工程的生命周期碳排放评价方法框架。利用此框架,文章对崇明岛典型河道护岸类型——钢筋砼桩板护岸进行了生命周期碳排放计算,得到1功能单位钢筋砼桩板护岸工程的生命周期碳排放为447.05 t。其中,原材料生产单元、材料运输单元和施工单元的碳排放分别为330.33,13.62,103.1 t。目前,崇明岛已有此种护岸工程长度约为2 983 km,得到其总碳排放为133.4万t,占上海2005年碳排放总量的2.30%。
Global warming as an urgent problem for human to .be solved can be achieved crucially by reducing greenhouse gas emissions such as CO2, CI-h and N：O. Based on life cYCle assessment method, life cycle process of river revetment engineering was divided into five units, including material production, material transportation, construction, maintenance and management, demolish and disposal or recovery. Carbon emission sources of whole process were analyzed, and a life cycle carbon emission evaluation method framework suitable for river protection project was proposed. Under the framework, the reinforced concrete pile board revetment engineering, a typical river bank protection engineering in Chongming Island, Shanghai was taken as a case to conduct life cycle carbon emission calculation. Results indicated that 447.05 t of COs exhausted in one function unit during life cycle process of the river revetment engineering, among which the material protection unit, material transportation unit and construction unit assigned as 330.33 t,13.62 t,103.1 t respectively. Chongming Island is filled with the type of river bank construction engineering around 2 983 km. Accordingly, total carbon emissions are 1.334 million tons accounting for 2.30% compared to total carbon dioxide that Shanghai discharged in 2005.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2013年第2期200-205,共6页
Environmental Science & Technology
基金
国家科技支撑计划后世博科技专项(2010BAK69B16-1-3)
关键词
全球变暖
崇明岛
河道护岸工程
生命周期评价
碳排放
global warming
Chongming Island
river revetment engineering
life cycle assessment
carbon emission
