Land use and vegetation structure in forest remnants of fragmented landscapes in Amazonia, Colombia

Abstract

Monitoring land use and knowledge about the vegetation state in forests remnants which are in a rapid fragmentation process are essential to support decision-making on land planning. We undertook a multitemporal analysis of land use change and landscape configuration for the period 1990-2016. Vegetation sampling transects were established in three forest relicts. Our results indicate a loss of 56.34% of forest area, an increase in the patches number, area reduction and a distance increase between the forest fragments. In the sampled forests, the dominance of generalist heliophyte species from disturbed ecosystems was found. Also, we observed a structural complexity reduction of the forest associated with an individuals low density with a DBH ≥ 10 cm in the upper tree layer, showing that landscape fragmentation has led to the forest degradation.

Keywords

• análisis multitemporal
• bosque húmedo tropical
• deforestación
• degradación forestal
• fragmentación
• Guaviare
• métricas del paisaje