水利水电技术（中英文）2025，Vol.56Issue(4)：131-144,14.DOI:10.13928/j.cnki.wrahe.2025.04.011
平陆运河世纪工程鱼类资源现状及多样性研究
Current status and diversity of fish resources in the Pinglu Canal Century Project
摘要
Abstract
[Objective]The channel straightening project of the Pinglu Canal has fragmented the river course,compromising the integrity of original river course and causing ecosystem patchiness.Understanding the current status of fish resources and the characteristics of their diversity is crucial for the ecological management of the Pinglu Canal.[Methods]During the spring and autumn in 2021 and 2022,a survey of fish resources and species diversity in the Pinglu Canal was conducted using multi-mesh gill nets.A total of 125 fish species were collected,belonging to 10 orders,34 families,and 89 genera.[Results]The result showed that the Pinglu Canal contained three nationally protected Class Ⅱ species,two endemic species of the Qinjiang River,three anadromous/migratory species,and eight invasive species,accounting for 2.4％,1.6％,2.4％,and 6.4％of the total species,respectively.The fish community primarily consisted of mid-and bottom-dwelling,adhesive-egg-laying,and omnivorous species.The Shannon-Wiener,Simpson,Margalef,and Pielou indices of the fish community in the Pinglu Canal ranged from 2.347 to 2.757,0.081 to 0.151,3.493 to 4.382,and 0.812 to 0.892,respectively.These indices showed relatively uniform distribution across different river reaches.[Conclusion]The result indicate that the fish community structure in the Pinglu Canal is relatively uniform.The reach from the Yujiang River to the Shaping River shows higher stability,while other river reaches experience moderate or severe disturbances.This study provides supplementary baseline data on the fish community structure in the Pinglu Canal and explores the potential impact of inter-basin connectivity on fish resources,aiming to provide a scientific basis for habitat restoration assessments after the channel straightening project.关键词
平陆运河工程/跨流域连通/鱼类资源/群落结构/生物多样性/影响因素Key words
Pinglu Canal Project/inter-basin connectivity/fish resources/community structure/biodiversity/influencing factors分类
水利科学引用本文复制引用
路嘉,唐玮,王丽,徐胜贤,张鹏,杨胜发..平陆运河世纪工程鱼类资源现状及多样性研究[J].水利水电技术（中英文）,2025,56(4):131-144,14.基金项目
National Natural Science Foundation of China(42007213) （42007213）
National Key Research and Development Program of China(2023YFC3208801) （2023YFC3208801）
Team Building Project for Graduate Tutors in Chongqing(JDDSTD2022001) （JDDSTD2022001）
Joint Training Base Construction Project for Graduate Students in Chongqing(JDLHPYJD2019001)国家自然科学基金(42007213),国家重点研发计划(2023YFC3208801),重庆市研究生导师团队建设项目(JDDSTD2022001),重庆市研究生联合培养基地建设项目(JDLHPYJD2019001)联合资助 （JDLHPYJD2019001）
