摘要
鄱阳湖通江水道是多种洄游性鱼类完成生活史过程的重要通道,具有重要的生态功能,对于长江中下游鱼类资源的养护及其多样性维持至关重要。为了解越冬时期鄱阳湖通江水道中不同体长鱼类资源的空间分布规律及栖息生境状况,本研究将鱼类声学探测、生境遥感定量制图分析和三维水动力模拟相结合,分别绘制出3种不同体长鱼类群落的水深(SID)、流速(SIV)、坡度(SIS)等单因子生境适宜度指数曲线,并利用乘积法建立栖息地适宜性指数(habitat suitability index,HSI)模型,对通江水道中不同水域的鱼类生境适宜度进行对比和评估。结果表明,鄱阳湖通江水道越冬时期鱼类平均全长为(10.1±5.73)cm,主要分布在屏峰山以北的湖口县、鞋山和屏峰附近3个水域;小体长鱼类群组(1~20 cm)水深的生境适宜度曲线为双峰型,最适宜水深包括3.06~4.59 m和9.18~12.24 m两个区间,流速为0.05~0.13 m/s,坡度为0~2.23°;中等体长组(20~40 cm)及大体长组(>40 cm)鱼类适宜的水深、流速和坡度的生境适宜度曲线均为单峰型,其中中等体长组最适宜栖息的生境因子范围为水深9.18~13.77 m、流速0.05~0.13 m/s和坡度0~2.23°,大体长组为13.77~15.3 m、0.10~0.13 m/s和0~2.23°。
The channel connecting the Poyang Lake and the Yangtze River is an important channel for most migratory fish to complete their life cycle process,and so has an important ecological function for the conservation and diversity of fish resources in the middle and lower reaches of the Yangtze River.In this study,acoustic detection,remote sensing,and three-dimensional hydrodynamic simulation were combined to understand the spatial distribution and habitat status of fish with different body length in the channel connecting the Poyang Lake and the Yangtze River through the winter period.Firstly,the single factor habitat suitability index(HSI)curves of water depth,flow velocity,and slope of three fish groups with different body length were drawn,and then the product method was used to establish the habitat suitability model.Finally,the habitat suitability of fish in different sections of the channel connecting the Poyang Lake and the Yangtze River was compared and evaluated.The results showed that the average length of fish in the channel was 10.1 cm,and the fish were mainly distributed in Hukou,Mountain Xie,and Pingfeng area.The most suitable water depth range for fish groups with body length of 1–20 cm was 3.06–4.59 m and 9.18–12.24 m,with a flow velocity range of 0.05–0.13 m/s and slope range of 0–2.23°.The habitat suitability curves of water depth,flow velocity,and slope of fish that were sized 20–40 cm and over 40 cm were unimodal,and the most suitable range of water depth,flow velocity,and slope of the 20–40 cm fish group were 9.18–13.77 m,0.05–0.13 m/s,and 0–2.23°,respectively.For fish with body length over 40 cm the most suitable ranges of water depth,velocity,and slope were 13.77–15.3 m,0.10–0.13 m/s,and 0–2.23°,respectively.
作者
李慧峰
曹坤
汪登强
丁放
毛智慧
俞立雄
王珂
段辛斌
贾春艳
陈大庆
王琳
LI Huifeng;CAO Kun;WANG Dengqiang;DING Fang;MAO Zhihui;YU Lixiong;WANG Ke;DUAN Xinbin;JIA Chunyan;CHEN Daqing;WANG Lin(Wuxi Fisheries College,Nanjing Agricultural University,Wuxi 214081,China;Fishery Resource and Environment Research Center,Chinese Academy of Fishery Sciences,Beijing 100141,China;Scientific Observing and Experimental Station of Fishery Remote Sensing,Ministry of Agriculture and Rural Affairs,Beijing 100141,China;Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences,Wuhan 434020,China)
出处
《中国水产科学》
CAS
CSCD
北大核心
2022年第3期341-354,共14页
Journal of Fishery Sciences of China
基金
国家重点研发计划项目(2018YFD0900801)
中国水产科学研究院基本科研业务费资助项目(2018HY-ZD0101)
中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金资助项目(2020TD11)
关键词
鄱阳湖
栖息地适宜性指数
最适栖息地分布
鱼类声学探测
遥感
水动力模型
the Poyang Lake
habitat suitability index
optimal habitat distribution
fish acoustic detection
remote sensing
hydrodynamic model
作者简介
李慧峰(1992-),女,博士研究生,从事渔业资源及遥感应用研究.E-mail:2018213001@njau.edu.cn;通信作者:陈大庆,研究员,从事渔业资源研究,E-mail:chdq@yfi.ac.cn;通信作者:王琳,副研究员,从事鱼类生态学遥感应用研究,E-mail:angels121@cafs.ac.cn
