International Coastal Cleanup was launched on the coast of Kagoshima Bay in 1999. Theresults revealed a foamed plastic fragment is a major beach litter. Sand samples were collected for gath-ering the grounded and buried plastic litter at 77 strand lines on 68 beaches of Kagoshima prefecture.(1998-2000) Collected plastic litter had a total of 80,655 pieces, and the size range 0.3-4.0 mm repre-sented 91.0 % of the total. Foamed plastic fragments accounted for 94.8% of the total on the beach ofKagoshima Bay. The highest density was observed on the east coast of Kagoshima Bay, and the averagedensity was 290.4 pieces per liter. It was presumed that the origins of the foamed plastic fragments werethe waste Expanded Polystyrene (EPS) floats using for fenders of fishing boats and the grounded EPSfloats used for floats of aquaculture pens. As a result of the visually observation on the whole coast ofKagoshima Bay, it was confirmed that a total of 3,043 EPS floats were grounded on the coast, and a totalof 4,856 floats were used for mooring buoys, fenders and fishing floats without covers on the sea. Therecycling system of waste EPS floats was developed for reducing the development of the foamed plasticfragments. In four years of testing, 6,424 floats have been recycled as part of a government program inKagoshima Bay. Sampling surveys using a small trawl net were conducted 118 times (2003-2005) toestimate distribution and composition of seabed litter at eight stations established in Kagoshima Bay. Thesediments collected from the sea bottom contained 54,388 items and 76.9 kg of natural objects and sea-bed litter. The average density of seabed litter was 2,517 items/km~2and 30.3 kg/km~2 accounting for 3.7%of the total sediments by number. The dominant type of deposited litter on the sea bottom was filmyplastic including plastic bags accounting for 49.0 % of seabed litter by number. Seabed litter was found atall stations in Kagoshima Bay whether or not the station was in a fishing ground. The density distributionof filmy plastic was higher in the innermost and central area of this bay similar to the distribution of plantleaves.
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机译：国际海岸清洁运动于1999年在鹿儿岛湾海岸发起。结果显示，泡沫塑料碎片是海滩上的主要垃圾。收集沙子样本以便在鹿儿岛县68个海滩上的77条绞线处对磨碎的地面和埋藏的塑料垃圾进行收集。（1998-2000年）收集的塑料垃圾共80,655件，尺寸范围为0.3-4.0 mm发送了总数的91.0％。鹿儿岛湾海滩上起泡的塑料碎片占总数的94.8％。在鹿儿岛湾东海岸观察到最高的密度，平均密度为每升290.4个。据推测，泡沫塑料碎片的起源是用于渔船护舷的膨胀聚苯乙烯（EPS）浮漂和用于水产养殖笔浮筒的接地EPS浮漂。通过目视观察鹿儿岛湾的整个海岸，可以确认在海岸上总共搁置了3,043个EPS浮标，并且总共有4,856个浮标用于在海上无盖的系泊浮标，护舷和钓鱼浮标。为减少泡沫塑料碎片的发展，开发了EPS EPS浮子的回收系统。经过四年的测试，作为鹿角岛湾政府计划的一部分，已回收了6,424个浮标。 2003年至2005年，使用小型拖网进行了118次抽样调查，以估算在鹿儿岛湾建立的8个站的海底垃圾分布和组成。从海底收集的这些沉淀物包含54,388件物品和76.9 kg的自然物体和海底垃圾。海底垃圾的平均密度为2,517项/ km〜2和30.3 kg / km〜2，占沉积物总数的3.7％。海底沉积垃圾的主要类型是薄膜状塑料，其中塑料袋占海底垃圾的49.0％。鹿儿岛湾的所有车站都发现海底垃圾，无论该车站是否在渔场中。薄膜塑料的密度分布在该海湾的最内侧和中央区域较高，类似于植物叶片的分布。
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