摘要
为探究长江干线武汉至安庆段6 m水深航道整治工程江豚临时庇护所建立的效果,于2019年—2021年期间对长江干流骨牌洲水域的江豚种群动态、渔业资源量、通航船只数量进行了监测。通过对比江豚庇护所建立前后,区域内江豚种群数量、分布以及渔业资源量的变化来评估临时庇护所建立的效果。结果显示:对比庇护所建立前区域内江豚数量估算2~3头,庇护所建立后区域内江豚种群数量增加到10头左右。骨牌洲水域鱼类平均密度由2019年的32.0±22.6 ind./area增加到了2020年的52.2±41.1ind./area,说明庇护所水域渔业资源量得到了提升。综合江豚动态监测和渔业资源监测结果来看,航道工程江豚临时庇护所的建立起到对江豚保护的功能与作用,对于长江航道工程江豚保护具有一定的借鉴和参考意义。
In order to explore the effect of establishing a temporary shelter for Neophocaena asiaeorientalis in the 6 m deep channel regulation project of the Wuhan to anqing section of the Yangtze River trunk line, this study monitored the population dynamics, fishery resources and the number of navigable ships of Neophocaena asiaeorientalis in the waters of Gupai island in the main stream of the Yangtze River from 2019 to 2021. By comparing the changes of the population, distribution and fishery resources of Neophocaena asiaeorientalis in the region before and after the establishment of the temporary shelter, the effect of the establishment of the temporary shelter is evaluated. The results showed that compared with the estimated 2-3 ind. in the area before the shelter, the population of Neophocaena asiaeorientalis in the area increased to about 10 ind. after the establishment of the shelter. The average density of fish in the waters of Gupai island increased from 32.0±22.6 ind./area to 52.2±41.1 ind./area, indicating that the fishery resources in the shelter waters have been improved. Based on the results of Neophocaena asiaeorientalis dynamic monitoring and fishery resources monitoring, the establishment of Neophocaena asiaeorientalis temporary shelter in channel engineering plays a role in Neophocaena asiaeorientalis protection, and has certain reference and reference significance for Neophocaena asiaeorientalis protection in Yangtze River Channel Engineering.
作者
王云飞
郑俊杰
李世健
连玉喜
WANG Yun-fei;ZHENG Jun-jie;LI Shi-jian;LIAN Yu-xi(CCCC Second Navigation Engineering Survey and Design Institute Co.Ltd.,Wuhan 430071,China;Anqing Normal University,Anqing 246011,China)
出处
《水道港口》
2022年第3期390-395,共6页
Journal of Waterway and Harbor
基金
国家自然科学基金项目(31902377)。
关键词
江豚
临时庇护所
航道工程
骨牌洲
Neophocaena asiaeorientalis
temporary shelters
waterway engineering
Gupai island
