Environmental Impact of Residential Building Construction in Beijing: 1949 ～ 2003--Assessing the Construction Materials'''' Environmental Impact by LCA
北京住宅建设的环境影响：1949～2003年——从生命周期角度评价建筑材料的环境影响

Since 1949,especially in recent 20 years,the number of Beijing's residential building has increased rapidly.Such a fast development also has a great impact on the eco-environment.Generally,the methods of assessing the impact of buildings focus on the direct or local impact during the construction or using period.This article assesses the indirect impact of the building materials in a city's scale using the Life Cycle Assessment method.According to the analysis result,we find that the increase rate of residential buildings' impact is higher than that of the building area.Finally,we attribute this difference to the building structures and building materials.