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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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广东沿海新发现的海草床
Keywords: 海草床,地理分布,生态特征,生境威胁,广东沿海
Abstract:
？通过对广东沿海水域的现场调查,新发现8个海草床,主要分布在柘林湾、汕尾白沙湖、惠东考洲洋、大亚湾、珠海唐家湾、上川岛、下川岛和雷州企水湾。海草种类主要包括喜盐草(halophilaovalis)、贝克喜盐草(halophilabeccarii)和矮大叶藻(zosterajaponica)等3种。海草覆盖率为6.67%—53.33%,茎枝密度为3428.57—10542.00shoots.m-2,生物量为12.86—118.24g.m-2。海草床底上生物密度为16.67—734.67ind.m-2,生物量为15.39—426.88g.m-2,多样性指数为0.46—1.98,均匀度指数为0.28—0.89。海草床生境受到的严重威胁主要来自围海养殖(养蚝、养螺)、污水排放、渔民作业方式(电鱼、电虾、扒螺、挖贝类)、自然灾害(台风和洪水)等。
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