Spatial heterogeneity of urban land-cover landscape in Guanzhou from 1990 to 2005

Auteur(s) et Affiliation(s)



Description :
Based on 4 land-cover type maps interpreted from remote sensing TM images of 1990, 1995, 2000 and 2005, combining gradient analysis with landscape metrics, the quantified spatial pattern and its dynamics of urbanization in Guangzhou was got. Three landscape metrics were computed within different regional areas including the whole study area, two transects along two highways (one N-S and the other W-E) and radiation zones with equal distance outwards the city center were set. Buffer zones for transects N-S and W-E were outlined along highways. A precise location for urbanized area, like city center and sub-center, could be identified by multiple landscape metrics. Multiple adjunctive centers occurred as indicated by analysis of radiation zones around the city center. Some interesting and important ecological implications were revealed under landscape patterns of 2 transects or radiation zones, and that was the important step to link pattern with processes in urban ecological studies and the basis to improve urban environment.


Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2009, vol. 19, n°. 2, p. 213-224, nombre de pages : 12, Références bibliographiques : 19 ref.

Date :
2009

Editeur :
Pays édition : Chine