Assessment and management strategy of river habitat in Chaohu Basin

doi:10.7523/j.ucas.2025.060

Abstract

Abstract: River habitat assessment is an important part of water ecological health assessment. Through habitat assessment basic information and basis can be provided for river ecological restoration and management. This study took the Chaohu River Basin as the research area. By constructing a habitat quality evaluation system for the Chaohu River Basin, the habitat quality of 9 restoration units was evaluated in May 2023, July 2023, and January 2024, and governance measures were proposed. The results showed: 1) In the three surveys, the points with habitat quality at a good or better level accounted for 38% to 53%, the points at a general level accounted for 42% to 55%, and the points at a poor or worse level accounted for 2% to 7%; 2) The survey results indicated that the habitat environment in the Dabie Mountain area was the best, followed by the Zhaohao River area and the Zhegaodong River area. The habitat environment in the Shifili River area was relatively poor. Compared with the results of the May survey, except for the Zhaohao River area, the evaluation scores of each restoration unit in July were all improved, and most restoration units showed the best habitat environment level in January; 3) Some evaluation indicators have a significant correlation with water quality indicators, indicating that there is a certain impact on river water quality. At the same time, the habitat environment is also an important factor affecting the survival and distribution of benthic organisms, and human production activities have also had varying degrees of impact on habitat quality; 4) The habitat environment level in the Shifili River area was poor. The collection and treatment rate of domestic sewage should be improved to reduce urban point source and non-point source pollution. The habitat environment in the Dabie Mountain area was good, and further strengthening of shore slope ecological support and improving the stability of the river bank could be carried out.

Key words: Chaohu Basin, river habitat, habitat assessment, assessment index

CLC Number:

K903

ZHANG Min, YAN Renhua, CHEN Jiannan, GAO Junfeng, YAN Jialong, YAN Suding. Assessment and management strategy of river habitat in Chaohu Basin[J]. Journal of University of Chinese Academy of Sciences, DOI: 10.7523/j.ucas.2025.060.

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