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http://dx.doi.org/10.7319/kogsis.2014.22.4.047

Applying Ensemble Model for Identifying Uncertainty in the Species Distribution Models  

Kwon, Hyuk Soo (National Institute of Environmental Research)
Publication Information
Journal of Korean Society for Geospatial Information Science / v.22, no.4, 2014 , pp. 47-52 More about this Journal
Abstract
Species distribution models have been widely applied in order to assess biodiversity, design reserve, manage habitat and predict climate change. However, SDMs has been used restrictively to the public and policy sectors owing to model uncertainty. Recent studies on ensemble and consensus models have been increased to reduce model uncertainty. This paper was carried out single model and multi model for Corylopsis coreana and compares two models. First, model evaluation was used AUC, kappa and TSS. TSS was the most effective method because it was easy to compare several models and convert binary maps. Second, both single and ensemble model show good performance and RF, Maxent and GBM was evaluated higher, GAM and SRE was evaluated lower relatively. Third, ensemble model tended to overestimate over single model. This problem can be solved by the suitable model selection and weighting through collaboration between field experts and modeler. Finally, we should identify causes and magnitude of model uncertainty and improve data quality and model methods in order to apply special decision-making support system and conservation planning, and when we make policy decisions using SDMs, we should recognize uncertainty and risk.
Keywords
Corylopsis Coreana; National Ecosystem Survey; BIOMOD2; Maxent; Bioclim;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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