HSI model to evaluate the suitable habitat of ESC in conjunction with Potential Surface
Analysis (PSA) by defined weighting value (Ri) from the correlation coefficient and rating value inform of the suitability index or SI. Sum of Ri and Si show to the HSI value between 0-1. The close to 1 of HSI value means those habitats are highly suitable, on the other hand, values close to 0 means it least suitable or not suitable habitat for Easter Sarus Crain as stated in this equation: