Carbon emission is the final standard to test green building, and it's highly correlated with PM2.5. So, it's very important to establish a clear urban carbon reduction target to research accumulation and assessment framework of carbon emissions data, also, it's more important to establish a calculation model with high reliability of carbon emission used to evaluate the data. The carbon emission of construction is an important criterion to evaluate low-carbon index of construction. In this article, it takes a detailed analysis of carbon emission factors in .the construction life cycle with construction phase, usage and maintenance phase, and demolition recovery phase. At the same time, by the contrast and analysis, we can see that carbon emissions of renovation projects are much smaller than that of new projects, and making recommendations for reducing emissions.
In order to change our corporate credit defect engineering supervision status, this paper uses Porter’s five forces model to analyze our engineering supervision enterprises, and the credit system construction. Our thesis project supervision companies can change the status of lack of credit by starting professional liability insurance, and other methods.
This paper reveals generating mechanism and reasons of housing consumption by analyzing potential demand and the effective demand. Based on defect analysis of house price-to-income ratio and factors of influencing housing affordability, this paper puts forward the establishing method and process of resident housing affordability index. Finally, in order to keep the housing prices in a reasonable range and active the consumption of the urban residents, the corresponding measures and suggestions are put forward based on present residents housing affordability.
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