Ciencia forestal en México
Print version ISSN 1405-3586
GALEANA PIZANA, José Mauricio; CORONA ROMERO, Nirani and ORDONEZ DIAZ, José Antonio Benjamín. Análisis dimensional de la cobertura vegetal-uso de suelo en la Cuenca del Río Magdalena. Rev. Cien. For. Mex [online]. 2009, vol.34, n.105, pp. 135-156. ISSN 1405-3586.
Although Mexico City has one of the highest population densities worldwide, 58% of its territory has been catalogued as "conservation soil". The present study carried out a spatial dimensional analysis - of both land use and vegetation cover type - of the area known as the "Magdalena Contreras" watershed. The analysis resulted in the identification of 20 different classes with a prevailing presence (40%) of Abies religiosa upon 34% of closed forest and 6% in of open forest type. The second most extended vegetation cover (20%) is that of Pinus hartwegii distributed as well in both open (10.8%) and closed (9.68%) forests. The third most extensive forest type (13.6%) is that conformed by the so-called ecotonal forest encompassing both A. religiosa and P. hartwegii, 12.95% of which is located in a closed forest and 0.66% in an open forest. At last, the closed forest conformed by P. hartwegii and A. religiosa represents a 6.45%, the mixed forest a 4.8% and the Quercus forest a 2%. By crossing geographic information generated a environmental matrix, which allowed for an environmental analysis of the key components needed, to know the area and location of each of the vegetation cover as a function of temperature, precipitation, elevation, edafology and aspect.
Keywords : Dimensional analysis; Mexico city forests; vegetation cover; Magdalena Contreras; environmental matrix; land use.