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La rapide urbanisation de la Chine conduit à mettre au point des méthodes d'analyse et de suivi de la taille des villes. Devant l'hétérogénéité des divisions administratives et des dénombrements des populations, nous en proposons ici une estimation par les surfaces bâties, obtenues sur des images satellites Landsat. On mesure ainsi l'extension en superficie d'une cinquantaine d'agglomérations urbaines de 1980 à 2000, que l'on compare ensuite aux chiffres de population indiqués pour les villes éponymes dans diverses bases de données internationales. Les relations non linéaires établies entre populations et surfaces attestent de la cohérence des résultats obtenus par cette méthode. Cependant, lorsqu'il s'agit de mesurer l'évolution des surfaces comme des populations, les nombreuses fluctuations rendent la méthode moins fiable et celle-ci doit être complétée par d'autres types d'observations.

The introduction of Chinese high-speed train development and approaches. ►Chinese spatial development strategies and anticipated regional and urban impacts. ► Key challenges in reshaping Chinese space economy through high-speed trains at regional and urban scales.

DOI : http://dx.doi.org.gate3.inist.fr/10.1016/j.jtrangeo.2012.01.028 [ScienceDirect, via Biblio-SHS] Auteur : Chia-Lin Chen (The Bartlett School of Planning, University College London) Highlights ► The introduction of Chinese high-speed train development and approaches. ►Chinese spatial development strategies and anticipated regional and urban impacts. ► Key challenges in reshaping Chinese space economy through high-speed trains at regional and urban scales. Paru dans :

Along with the rapid development of urbanization, the energy problem is increasingly prominent. Based on CES production function and growth function of urbanization, this paper put forward the model of Growth Drag of China's Urbanization Caused by energy, and empirical analysis with the data of China was done. The results showed that the growth drag of energy during urbanization process in China is 0.2692,in other words, because of the restriction of energy, urbanization process declines 0.2692.From the results, the Growth Drag of China's Urbanization Caused by energy is very high. Ensure that energy security supply has become one of the important tasks for our country at present.

By Cong Mu (Global Times) 08:27, September 17, 2012 For the first time in China, there are more urban citizens than rural residents in the country, but rural-urban inequalities remain, according to a research report released Saturday by the Chinese Academy of Social Sciences (CASS) in Beijing.

China has finished the "urbanization of place" but not of people, and the main obstacle is the household registration system