Accounting model and demonstration for marginal environmental effects of the rapid urbanization in China
In order to analyze marginal environmental effects of China's rapid urbanization, a model was built to calculate the variation of contaminants caused by every one percentage-point increasing in the urbanization. The results show that the rapid urbanization has brought serious contradictions between its development and the environmental protection. From 1996 to 2009, urban waste-water discharges, COD, NH3-N and urban solid waste productions and NOX, CO2 emissions show positive relationships with every one percentage-point increasing in the urbanization. Due to the significant increase of the sludge treatment rate, COD and NH3-N emissions increasing with every one percentage-point increasing in the urbanization, which are positive during the period of the Tenth Five-Year Plan, turn to negative through the Eleventh Five-Year Plan. Besides, the less coal consumption results in decreased SO2 emissions with every one percentage-point increasing in the urbanization during the period of the Tenth and Eleventh Five-Year Plans. In conclusion, it is better for China to open up a path of Chinese characteristic urban development and hold rationally the speed and rhythm of the urban development to promote the harmony between the urban development and the environment.
国家科技期刊平台
NSTL
万方数据
维普
