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en:manuel_reference:methode_micro:verif_habby [2021/12/01 16:10] – ylecoarer | en:manuel_reference:methode_micro:verif_habby [2021/12/01 18:15] – ylecoarer | ||
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For a given variable, and for discrete values of the latter, the biological model provides suitability index SI given values between 0 and 1, qualifying the ' | For a given variable, and for discrete values of the latter, the biological model provides suitability index SI given values between 0 and 1, qualifying the ' | ||
- | Equation (1) is used to calculate | + | Equation (1) is used to calculate |
(1a) \[HSI_i=SI_H(H_i)\times SI_V(V_i)\times SI_S(S_i)\] | (1a) \[HSI_i=SI_H(H_i)\times SI_V(V_i)\times SI_S(S_i)\] | ||
(1b) \[HSI_i=(SI_H(H_i)\times SI_V(V_i)\times SI_S(S_i))^\frac{1}{3}\] | (1b) \[HSI_i=(SI_H(H_i)\times SI_V(V_i)\times SI_S(S_i))^\frac{1}{3}\] | ||
- | (1c) \[HSI_i=\frac{SI_H(H_i)\times | + | (1c) \[HSI_i=\frac{SI_H(H_i)+ SI_V(V_i)+ SI_S(S_i)}{3}\] |
(2) \[WUA=\sum_{i=1}^M A_i\times HSI_i\] | (2) \[WUA=\sum_{i=1}^M A_i\times HSI_i\] | ||
(3) \[OSI=\frac{WUA}{\sum_{i=1}^M A_i}\] | (3) \[OSI=\frac{WUA}{\sum_{i=1}^M A_i}\] |