Quantitative analysis of ecological suitability and stability of meandering rivers.
Ecological suitability
Hydraulic units
Meandering
River morphology
Weighted usable area
Journal
Frontiers in bioscience (Landmark edition)
ISSN: 2768-6698
Titre abrégé: Front Biosci (Landmark Ed)
Pays: Singapore
ID NLM: 101612996
Informations de publication
Date de publication:
24 01 2022
24 01 2022
Historique:
received:
15
07
2021
revised:
21
12
2021
accepted:
23
12
2021
entrez:
28
2
2022
pubmed:
1
3
2022
medline:
2
4
2022
Statut:
ppublish
Résumé
As the most widely distributed river form in the world, meandering river is of great significance for stabilizing the physical structure of the river and maintaining ecosystem. To quantitatively study the positive effects of meandering rivers, the Chishui River, a natural tributary of the Yangtze River in Southwest China, is selected as the research area, and two typical river sections with different meandering degrees are selected as the research objects. Based on the field survey data, the local endemic fish With the change in discharge, a positive correlation is observed between the maximum velocity and depth of the meandering river and the discharge, whereas the WUA and hydraulic unit index of the meandering river have relatively small changes. Under low discharge, the distribution of pool-riffle sequences can be seen in the meandering reach, which is essential to improve the ecological suitability and stability of the river. This study provides scientific sustentation for river restoration and fish conservation.
Sections du résumé
BACKGROUND
As the most widely distributed river form in the world, meandering river is of great significance for stabilizing the physical structure of the river and maintaining ecosystem. To quantitatively study the positive effects of meandering rivers, the Chishui River, a natural tributary of the Yangtze River in Southwest China, is selected as the research area, and two typical river sections with different meandering degrees are selected as the research objects.
METHODS
Based on the field survey data, the local endemic fish
RESULTS
With the change in discharge, a positive correlation is observed between the maximum velocity and depth of the meandering river and the discharge, whereas the WUA and hydraulic unit index of the meandering river have relatively small changes. Under low discharge, the distribution of pool-riffle sequences can be seen in the meandering reach, which is essential to improve the ecological suitability and stability of the river.
CONCLUSIONS
This study provides scientific sustentation for river restoration and fish conservation.
Identifiants
pubmed: 35226985
pii: S2768-6701(22)00380-X
doi: 10.31083/j.fbl2702042
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
42Informations de copyright
© 2022 The Author(s). Published by IMR Press.
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.