Table 3 Evaluation result for water environment carrying capacity calculated by different evaluation method in different years.

From: The study on spatial distribution of water ecological environment carrying capacity during extreme drought conditions

Year

2005

2015

2020

Optimal value of water environment -carrying capacity

Weighted average method

0.416

0.402

0.375

0.996

Ratio of evaluation value to optimal value

0.418

0.404

0.377

 

Fuzzy comprehensive evaluation method

0.385

0.374

0.352

0.8

Ratio of evaluation value to optimal value

0.481

0.468

0.44

 

Vector modulus method

0.0231

0.021

0.0207

0.063

Ratio of evaluation value to optimal value

0.367

0.333

0.329

 
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