5. CONCLUSIONS
To build a modeling ecological framework could tease apart
complex species-environment relationship and permit more
accurate description of spatial patterns and suggest directions
for future research. This study represents a broad comparative
exploration of species ecological characteristics with different
organisms and processes respond to their environments, and the
ways that these responses vary geographically.
As shown in SD-1 (small spatial scale), the performance of
methods from highest to lowest was: MAXENT, DOMAIN,
GLM, ANN. MAXENT and DOMAIN models were the two
most capable for predicting a single species. However, the
outcome clearly indicated that the models merely based on
topographic variables performed poorly on spatial extrapolation
from Tong-Feng to Kuan-Dau because the humidity and solar
illumination affected by micro-terrain of the two watersheds are
quite different from each other. Therefore, the models
developed from topographic variables can only be applied
within a limited geographical extent without significant error.
Future studies will attempt to use variables involving spectral
information associated with species extracted from high spatial,
spectral resolution remotely sensed data, especially
hyperspectral image data, for building a model so that it can be
applied on a large spatial scale.
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