Deforestation is known to cause severe floods, river-basin flooding, flash floods, mudslides and landslides (Hammill, Brown and Crawford, 2005) and leads to an increased number of disasters and extensive damage. Their vulnerability is linked not only to deforestation but also to other manifestations of climate change. Their close relationship with their natural environment makes them particularly sensitive to the effects of climate change (Baird, 2008). In the worst cases, their way of life, and even their existence, is being threatened by climate change.