Land-cover changes during the past 50 years in the semi-arid tropical forest region of northern Peru

Auteur(s) et Affiliation(s)



Description :
This study, carried out in Piura Province in northern Peru, combines broad and fine scales to investigate temporal changes : at broad scale the AA. use aerial photos (from 1949, 1962, and 1999) and GIS to document land-cover change during a long-term period of 50 years; at fine scale they use spatial gradient analyses to document changes in species composition during a short-term period of 4 years (2003-2007). Re-sampling of the same elevational gradient (100-460 m a.s.l.) provides both a spatial and temporal gradient. Plausible causal links between human impact and documented changes are evaluated by means of ordination and Monte Carlo permutation tests. The changes in species richness and species composition with elevation may be due to climatic differences between the lowland and upland mountain study area, rather than different intensity of human land use.


Type de document :
Article de périodique

Source :
Erdkunde, issn : 0014-0015, 2012, vol. 66, n°. 1, p. 57-75, nombre de pages : 19, Références bibliographiques : 3 p.

Date :
2012

Editeur :
Pays édition : Allemagne, Kleve, Boss