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Table 5

Results of the health assessment of the Yangtze River in the Wuhan section

Rule layer
Indicator layer
Assessment
RL indicatorWeightIL indicatorWeightIL indicator valueIL indicator scoreIntegrity score
R1 0.15 I1 0.15 0.08 0.6 
R2 0.21 I2 0.21 99.5% 1.05 
R3 0.18 I3 0.18 2.94 0.54 
R4 0.22 I5 0.09 25% 0.18 
I6 0.07 0.7 0.28 
I7 0.06 2nd level* 0.24 
R5 0.24 I10 0.24 70 0.48 
Total    3.37 
Rule layer
Indicator layer
Assessment
RL indicatorWeightIL indicatorWeightIL indicator valueIL indicator scoreIntegrity score
R1 0.15 I1 0.15 0.08 0.6 
R2 0.21 I2 0.21 99.5% 1.05 
R3 0.18 I3 0.18 2.94 0.54 
R4 0.22 I5 0.09 25% 0.18 
I6 0.07 0.7 0.28 
I7 0.06 2nd level* 0.24 
R5 0.24 I10 0.24 70 0.48 
Total    3.37 

Note: ‘*’ means that the equation used for the IL indicator in the selected reference for the case study, or the RL indicator in the selected reference was different to our study. We used the IL indicator's grade in the reference to assign the IL indicator score.

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