Complex sentence: Most of the area is dominated with various types of broadleaf forests which varies with topography, soil type and the disturbance history (which are disturbances caused by hurricanes or agriculture).
Split into simpler sentences: Most of the area is dominated with various types of broadleaf forests. The type of broadleaf forest varies with topography, soil type and the disturbance history (which are disturbances caused by hurricanes or agriculture).