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为研究中国城市住区全寿命周期CO2排放情况,综合考虑住区住宅建筑排放量和绿地吸收量,提出计算方法,并以北京为例选择典型多层住区单元地块进行计算,讨论减排方法和减排潜力。计算结果表明:在现行规范、现有能源结构和技术水平下,案例住区建筑CO2排放量中约3%可由住区绿地吸收。通过推行节能措施和利用可再生能源,可实现减排约50%。而实现住区零排放,则需要从城市整体角度大量依靠郊区森林碳汇资源。
In order to study the CO2 emission over the life cycle of urban residential areas in China, considering the residential buildings emission and greenland absorption, the calculation method is proposed. Taking Beijing as an example, the typical multi-layer residential area plots are calculated to discuss the emission reduction Methods and potential for reducing emissions. The calculation results show that about 3% of the CO2 emissions from the residential buildings in the project area can be absorbed by the green areas of the settlements under the existing norms and existing energy structure and technology. By implementing energy conservation measures and using renewable energy sources, about 50% reduction can be achieved. Realizing zero emission in settlements requires a large reliance on suburban forest carbon sequestration resources from the perspective of the city as a whole.