The influencing factors of urban land expansion in Changsha
Aménagement urbain ; Analyse spatiale ; Années 1949-2004 ; Changsha ; Chine ; Croissance démographique ; Dynamique urbaine ; Développement régional ; Développement urbain ; Henan ; Morphologie urbaine ; Réseau de transports ; Ville
This research systematically analyses land-use map of Changsha city in different periods of time. The results indicate that the urban land expansion speed and intensity have steadily increased in Changsha from 1949 to 2004. The expansion form has
been from a single external expansion to a combination form of external and internal expansion, from a circular or linear continuous form to a blocky or agglomeration shape. Overall, the urban land expansion of Changsha city is a phasic, diversified
Uncertainty evaluation of the coordinated development of urban human settlement environment and economy in Changsha city
Changsha ; Chine ; Conditions de vie ; Développement ; Développement durable ; Développement économique ; Economie urbaine ; Ecosystème ; Hunan ; Incertitude ; Ménage ; Peuplement
L’A. évalue l’interaction entre le développement du peuplement urbain et économique au travers des facteurs d’incertitude dans la ville de Changsha dans le Hunan. Il explique que cette méthode reflète non seulement le degré global de coordination
[b1] Department of Resources and Environmental Sciences, Univ. of Science and Technology, Changsha, Chine
Modelling urban expansion using a multi agent-based model in the city of Changsha
Années 2006-2015 ; Changsha ; Chine ; Croissance urbaine ; Hunan ; Modèle ; Processus de décision ; Système multi-agents ; Urbanisation
, and governments. This model is applied to simulate urban expansion process taking Changsha City as a study area. The results show that this model can not only reflect basic characteristics of urban expansion, but also help explain the reasons for urban expansion
[b1] School of Info-Physics and Geomatics Engineering, Central South Univ., Changsha, Chine
A total of 219 agricultural soil and 48 vegetable samples were collected and investigated from the midstream and downstream of the Xiangjiang River (the Hengyang-Changsha section). The characteristics of soil contamination and heavy metals
[b2] Institute of Environmental Engineering, School of Metallurgical Science and Engineering, Central South University, Changsha, Chine
During excavations near the city of Changsha in 1973, two maps were found, painted on silk. The first in a scale of 1:170.000-1:190.000 shows the area around the common border point of today's Hunan, Kwangsi and Kwangtung provinces. The second shows
using the ion adsorption method, a micro-electrophoresis method and the X-ray diffraction analysis. Results indicated that all these soil samples, 4 ultisols collected respectively from Liuzhou, Guangxi, Changsha and Hunan Province, contained kaolinite