湖泊科学2024，Vol.36Issue(4)：1163-1172,10.DOI:10.18307/2024.0441
葛洲坝至胭脂坝长江干流段江豚活动规律
The activity rules of Yangtze finless porpoise(Neophocaena asiaeorientalis asiaeoriental-is)in the main stream of the Yangtze River from Gezhouba Dam to Yanzhiba
摘要
Abstract
The Yangtze finless porpoise(Neophocaena asiaeorientalis asiaeorientalis)is a first-class protected wild animal in Chi-na,and an indicative species of the Yangtze River ecosystem.Its population recovery and activity rules of Yangtze finless porpoises have received much attention.In this study,the section from Gezhouba Dam to Yanzhiba of the Yangtze River with high frequency of the Yangtze finless porpoises'activities was selected as the study area.From June 2021 to May 2022,the movement of the Yan-gtze finless porpoise was monitored using the methods of fixed-point visual inspection,water flow and UAV monitoring.A Zero-in-flated model Poisson regression model was developed to quantify the times of Yangtze finless porpoises exposed to the river surface.The environmental factors affecting the times of Yangtze finless porpoise exposed to the river surface were identified.Our investiga-tion results indicated that:(1)The maximum times of Yangtze finless porpoises detected in the section from Gezhouba Dam to Yanzhiba was 19,with 2-3 of them being the most common in the Yangtze finless porpoise cluster size,accounting for 58.1％.The Yangtze finless porpoise had four major behavioral characteristics with an descending order of playing＞resting＞feeding＞baby caring.(2)The Yangtze finless porpoise had the highest number of times in the downstream area of Gezhouba Dam(i.e.,from Gezhouba Dam to Zhixi Yangtze Bridge),and had more individuals in autumn and winter than that in spring and summer.The cumulative number of individuals was highest(252)in winter.(3)The individuals of Yangtze finless porpoise had a significant negative cor-relation with the discharge of the power plant.With the increase of turbidity,the probability of Yangtze finless porpoise exposing to the river surface decreased.This study provided scientific support to design ecological protection strategies for the Yangtze finless porpoise,and to evaluate the ten-year fishing ban in the Yangtze River.关键词
长江江豚/活动规律/电站下泄流量/葛洲坝Key words
Yangtze finless porpoise/activity rules/discharge of the power plant/Gezhouba Dam引用本文复制引用
石小涛,俞晓伟,柯森繁,朱梦娜,王克雄,郝玉江,李冬晴,陈伟,王楠楠,季怀耀,庞凯文..葛洲坝至胭脂坝长江干流段江豚活动规律[J].湖泊科学,2024,36(4):1163-1172,10.基金项目
国家自然科学基金项目(52279069)、湖北省自然科学基金计划(创新群体项目)(2023AFA005)和三峡库区生态环境教育部工程研究中心开放基金项目(KF2022-10)联合资助. （52279069）
