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2003年3月至4月及2004年3月至5月,对辽东湾北部双台子河口附近的斑海豹栖息地及斑海豹资源进行了调查。斑海豹数量和行为的观察采用海上目视直接观察及照相计数方法;栖息地的环境调查为现场结合社会调查。结果发现:斑海豹的栖息地十年来位置未改变,仍在距入海口10km处的一段河岸,但其生态环境正遭到破坏。斑海豹在该栖息地的分布时间从3月初辽东湾冰融起至5月中旬;高峰期在3月底至4月中旬之间;4月中旬斑海豹开始离开,比十年前提早半个月左右;5月中旬以后,斑海豹基本上全部离开此处。另外,斑海豹的个体数:2003年为105头,而2004年则为40头,其数量年变化较大。
From March to April in 2003 and from March to May in 2004, the habitat of harbor seal and harbor seal in the estuary near Shuangtaizi in the northern part of Liaodong Bay were investigated. The observation of the number and behavior of harbor seals adopts direct visual observation at sea and photogrammetry; the environmental survey of habitats is conducted on site with social investigation. The results showed that the habitat of the harbor seal had not changed its position in the past ten years and was still at a bank of riverbank 10km away from the sea inlet, but its ecological environment was being destroyed. Harbor seals in the habitat distribution time from the early March Liaodong Bay ice melt until mid-May; the peak from the end of March to mid-April; spot seal began to leave in mid-April, half an hour earlier than a decade ago Around mid-May, harbor seals basically all left here. In addition, the number of individual seals harbor seals: 105 in 2003, compared with 40 in 2004, the larger the number of years.