Figure 1. Flow of logic among components necessary to validate a land cover change model.
Figure 2. Map of suitability for deforestation after 1985 in the Ipswich watershed.
Figure 3. Map of real deforestation from 1985 to 1991 in the Ipswich watershed.
Figure 4. Range for percent of landscape classified correctly by a model as a function of percent of landscape changed in a modeled scenario, where ten percent of landscape is changed in reality.
Figure 5. Relative Operating Characteristic curves to validate models of deforestation in the Ipswich watershed between 1985 and 1991 using three suitability maps based on: random location (bottom ROC = 50%), logistic regression with protected areas (middle ROC = 65%), and multi-criteria evaluation with a spatial filter and protected areas (upper ROC = 70%).
Copyright 2000 Graduate School of Geography, Clark University
