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Source : Academic Search Premier Auteurs : Yong, Liu, Yue Wenze, and Fan Peilei DO I: 10.1068/b37009 Résumé: In this research we assessed the urban land conversion, and identified the factors responsible for the conversion, from 1995 to 2009 in Hangzhou, a large city located in the lower Yangtze River Delta of China. We mapped urban land from satellite images by using a hybrid approach of spectral mixture analysis, unsupervised classification, and expert rules. We employed binary logistic regression to model the probability of urban land conversion as a function of spatial independent variables. In recent years Hangzhou started its transformation from a compact, monocentric city to a polycentric city. We found that accessibility to the central business district, industrial centers, roads, Qiantang River, the amount of built-up area in the neighborhood, locations of markets, and spatial policies were the major determinants of Hangzhou's urban land conversion. Moreover, the availability of land in the neighborhood has become increasingly important in recent years. We identified several major institutional forces underlying Hangzhou's urban development: administrative annexation and development zones, the increasingly important role of the market, and the unique role of local government. The results from our research indicate the need for policies and plans that can better manage and reduce urban sprawl in Hangzhou. [ABSTRACT FROM AUTHOR]

A heated debate burns around the topic of waste incineration, the flames of which are stoked when the practice turns mountains of trash into usable energy through a toxic transformation. An article from China Dialogue outlines the practice and politics of garbage-incineration and the use of waste-to-energy technology in China, and how it will continue through the 12th five-year-plan.