The current state of marine debris on the seafloor in offshore area around Japan
The current state of marine debris on the seafloor in offshore area around Japan
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日本周边海域海底海洋垃圾现状
DOI：
10.1016/j.marpolbul.2020.111670
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发表时间：
2020
影响因子：
5.8
通讯作者：
Mituhashi Takahisa
中科院分区：
文献类型：
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作者：
Kuroda Mao;Uchida Keiichi;Tokai Tadashi;Miyamoto Yoshinori;Mukai Tohru;Imai Keiri;Shimizu Kenichi;Yagi Mitsuharu;Yamanaka Yuichi;Mituhashi Takahisa
海底的海洋废弃物尚未得到彻底调查，与其他类型的海洋废弃物相比，资料很少。我们进行了底拖网调查，以确定日本近海地区海底海洋废弃物的现状。调查在三个具有不同特征的海域进行。结果发现，海底峡谷中的海洋废弃物数量（2 926.1件/平方公里）高于大陆架。据透露，海底的大多数海洋废弃物是由塑料制品组成的，海底的废弃物在很长一段时间（30年以上）内保持其状态而不变质。此外，海洋废弃物的类型还受到每个地区的工业活动的影响。继续在更多地区调查海底海洋废弃物，将有助于解决海洋废弃物问题。
Marine debris on the seafloor has not been thoroughly investigated, and there is little information compared to other types of marine debris. We conducted bottom trawl surveys to determine the present situation of marine debris on the seafloor in offshore areas around Japan. The survey was conducted in three sea areas with different characteristics. As a result, it was found that the amount of marine debris in submarine canyons (2926.1 items/km2) was higher than on the continental shelf. It was revealed that most marine debris on the seafloor is comprised of plastic products, and that debris on the seafloor retains its condition for a long time (over 30 years) without deterioration. In addition, the type of marine debris is affected by the industries operating in each area. Continuing to investigate marine debris on the seafloor in more areas will contribute to solving the problem of marine debris.