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Regional Environmental Change

, Volume 11, Issue 3, pp 693–705 | Cite as

Understanding deforestation in montane and lowland forests of the Colombian Andes

  • Dolors ArmenterasEmail author
  • Nelly Rodríguez
  • Javier Retana
  • Mónica Morales
Original Article

Abstract

Colombian Andean forests cover nine million ha. These forests provide an informative case study of mountain deforestation in South America. They are surrounded by tropical lowland forests, and they host most of the country’s human population. This study evaluates the relative importance of human and natural variables in deforestation of the Colombian Andes between 1985 and 2005 using remote sensing methods, geographic information system (GIS) technology and general linear models (GLM). The following factors affected the annual deforestation in the region positively: forced population migration, unsatisfied basic needs, economic activity, crops, pastures, illicit crops, protected areas and slope. Factors having a negative effect were tenure of small land parcels, road density, water scarcity and mean temperature. The results of this study also provide insight into the differences between the dynamics of lowland forests and those of montane forests. Montane forests had a lower annual rate of deforestation than did forests in the lowlands. Socio-economic, demographic and biophysical factors explain overall deforestation rates for the region. However, when altitude variation is taken into account, intraregional differences in the Andes become evident. Deforestation processes differ between those areas adjacent to the high Andean valleys where most of the country’s population concentrates and those areas in the tropical lowlands north, west and east of the Andean chain. Differences between lowland and montane forest dynamics are due partly to the accessibility of forests and differences in wealth and economic activities. In montane forests, deforestation is positively influenced by economic activity, the presence of protected areas and higher slopes. Deforestation in montane forests is negatively affected by tenure of small land parcels, road density, water scarcity and mean temperature. Lowland deforestation rates are more closely related to rural population, pasture percentage, crops, protected areas and temperature. Our results suggest that montane forests appear to be in a more advanced stage of colonisation and economic development, whereas lowland forests are closer to the colonisation frontier and to rapidly growing colonist populations. This study reinforces the idea that although the most common tropical drivers of deforestation are found in the Andes, these drivers operate differently when intraregional differences are considered.

Keywords

Deforestation Andes GLM Montane forests Lowland forests Driving factors Colombia 

Notes

Acknowledgments

We acknowledge financial support from the Colombian Instituto Colombiano para el Desarrollo de las Ciencias-Colciencias for the support for mobility and academic cooperation. We are also grateful to the Conservation and Sustainable Use of Biodiversity in the Andes Region (GEF Project ID 774) that provided us with useful baseline information. Finally, thanks to C. Franco for her continuous help with GIS data handling.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Dolors Armenteras
    • 1
    • 3
    Email author
  • Nelly Rodríguez
    • 1
    • 2
  • Javier Retana
    • 2
  • Mónica Morales
    • 1
  1. 1.Unidad de Ecología, Departmento de Biología, Facultad de CienciasColombia National UniversityBogotáColombia
  2. 2.Centre de Recerca Ecològica i Aplicacions Forestals (CREAF) i Unitat d’EcologíaUniversitat Autònoma de BarcelonaBellaterra, BarcelonaSpain
  3. 3.Department of Biology, Sciences FacultyColombia National UniversityBogotáColombia

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