Benthic Invertebrate Integrity Index (B-IBI) and Water Quality Index (WQI) Datasets for the Ching River Basin: Autumn 2021 and Spring 2022

The distribution range of 30 biological index values in autumn at the reference point includes: 25% quantile, median, 75% quantile, standard deviation, and maximum value; 6. The distribution range of 30 biological index values in spring at the reference point includes: 25% percentile, median, 75% percentile, standard deviation, and maximum value; 7. Box plot distribution of 25 biological indices at reference and damaged points in autumn; 8.

Box plot distribution of 25 biological indices at reference and damaged points in spring; 9. Two seasons of B-IBI score calculation and health evaluation criteria, with evaluation results divided into: healthy, sub healthy, average, poor, and extremely poor; 10. Evaluation results of B-IBI of benthic animals in the Ching River Basin in spring and autumn, including B-IBI values and evaluation results at various points in both seasons; 11.

Two season reference point and damaged point B-IBI value test box plot, where P<0.05 indicates statistical significance of the results, and P<0.01 indicates high statistical significance of the results. The selected B-IBI index can effectively and reliably distinguish healthy water bodies (reference points) from damaged water bodies (damaged points), thus verifying the effectiveness of this biological assessment method.