广东一年55亿吨污水入海 大亚湾黄鱼龙虾濒灭绝
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大亚湾黄鱼龙虾濒灭绝
一年排入55亿吨污水广东海洋近两成污染
广东一年排入海洋55亿吨污水,珠江口、大亚湾生态健康下降。省海洋与渔业局昨天公布的《2007广东省海洋环境质量公报》显示,2007年全省近岸海域海水受轻度污染以上的海域面积约0.93万平方公里,约占近岸海域总面积的18.6%。
公报指出,广东污染海域主要分布在珠江口、汕头近岸和湛江港等部分大中城市近岸局部海域。珠江口近岸海域一直是全省污染最严重的海域,生态系统处于不健康状态,主要功能严重退化或丧失,短期内无法恢复,严重影响了水下生物的生存环境,大型生物极少,生物多样性较差,影响了中华白海豚的生存。主要影响因素是陆地排污、不科学的围填海、无序采砂、海洋施工和过度捕捞。
另一重要海域大亚湾的生态健康状态略有下降,处于亚健康状态,但仍处于退化过程中。主要表现在大亚湾渔业资源严重衰退,大黄鱼、小黄鱼、龙虾等濒临灭绝,石斑、鲍鱼等名贵种类数量越来越少。大亚湾西北部海域已经成为赤潮高发区,赤潮时有发生。
省海洋与渔业局公布了一批入海排污口超标的企业,其中包括广州建滔(南沙)石化有限公司、广州威达高公司造纸厂、广州华隆石油化工公司。
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