水生生物学报2025，Vol.49Issue(5)：53-61,9.DOI:10.7541/2025.2024.0362
长江新螺段白暨豚国家级自然保护区长江江豚分布特征及河道形态影响研究
DISTRIBUTION AND INFLUENCE ON RIVER MORPHOLOGY OF THE YANGTZE FINLESS PORPOISE IN THE XINLUO SECTION OF THE YANGTZE BAIJI NATIONAL NATURE RESERVE
摘要
Abstract
The Yangtze finless porpoise(Neophocaena asiaeorientalis),a flagship species for aquatic biodiversity conservation in the Yangtze River,serves as a key indicator of the river basin's ecological health.The Yangtze Xinluo Baiji National Nature Reserve is a crucial habitat for this species and one of the earliest established reserves for its protection.Monitoring the ecological conditions and population dynamics of the Yangtze finless porpoise within this reserve provides valuable insights into the broader environmental changes occurring in the mid-lower reaches of the Yangtze River.This study aims to explore the distribution characteristics of the Yangtze finless porpoise in the Xinluo section of the Yangtze River and the river morphological factors influencing its habitat selection,providing scientific basis for habitat restoration and protected area management.We analyzed survey data from 2006 to 2023,focusing on the distribution of the porpoises across different hydrological seasons and their correlation with environmental factors,utilizing habitat selection models.The results indicate that during the dry season,the porpoises are predominantly distributed in the Lao wan,Panjiawan,and Paizhouwan areas.In contrast,during the wet season,their distribution is concentrated in Paizhouwan,showing significant seasonal variation.Above the Chibi Bridge,the porpoise population remains sparse across all surveys.Overall,the distribution of Yangtze finless porpoises is positively correlated with river channel curvature and floodplain area,suggesting that natural landscape features play a pivotal role in their distri-bution.According to the above results,we suggest that further studies on the physical and chemical characteristics of specific river channels in the protected waters to better understand the habitat selection mechanism of the Yangtze finless porpoises.Additionally,we recommend further strengthening the protection and restoration of floodplain habi-tats,maintaining the natural shoreline in high-density areas such as Laowan,Panjiawan,and Paizhouwan,and improv-ing shoreline management practices.Furthermore,more intensive population monitoring is needed above the Chibi Bridge,along with habitat modification efforts to restore floodplains and improve connectivity between these critical habitats.关键词
自然保护区/栖息选择偏好/河道形态/保护与管理/长江江豚Key words
Nature reserve/Habitat preference/River Morphology/Conservation and management/Yangtze finless porpoise分类
农业科技引用本文复制引用
徐子佳,张瑶瑶,刘小宇,陈懋,梅志刚..长江新螺段白暨豚国家级自然保护区长江江豚分布特征及河道形态影响研究[J].水生生物学报,2025,49(5):53-61,9.基金项目
国家重点研发计划濒危旗舰水生动物种群监测及栖息地修复技术集成与示范(2022YFF1301603)资助[Supported by the National Key Programme of Research and Development of Ministry of Science and Technology of China(2022YFF1301603)] （2022YFF1301603）
