【摘 要】
：
为了了解长江口滩涂的环境状况以及对后期长江口滩涂的生态修复提供科学依据,本次调查了长江口2012年9月、10月、11月和12月四个月份的滩涂底栖生物种类组成与数量分布特点,调查研究方法依照《全国海岸带调查简明规程》中的规定进行,在不同的植被类型及光滩中采样,样方为0.25 m × 0.25 m的地下30 cm,所采泥样置于40目筛网内用水淘洗,获取大型底栖动物标本用Shannon-Wiener多样
【机 构】
：
上海海洋大学 水产与生命学院,上海201306;上海海洋大学 海洋科学研究院 海洋环境与生态研究所,上海201306
【出 处】
：
“全球变化下的海洋与湖沼生态安全”学术交流会
论文部分内容阅读
为了了解长江口滩涂的环境状况以及对后期长江口滩涂的生态修复提供科学依据,本次调查了长江口2012年9月、10月、11月和12月四个月份的滩涂底栖生物种类组成与数量分布特点,调查研究方法依照《全国海岸带调查简明规程》中的规定进行,在不同的植被类型及光滩中采样,样方为0.25 m × 0.25 m的地下30 cm,所采泥样置于40目筛网内用水淘洗,获取大型底栖动物标本用Shannon-Wiener多样性指数(H′)、Pielous种类均匀度(J)、种类丰度(D)、Berger-Parker优势度指数(I)4个测定长江口群落种类多样性指标进行数值分析.结果表明,调查所采获的底栖生物种类共有5门37种, 主要由甲壳动物,软体动物和多毛类动物组成.长江口滩涂四个月的平均生物量13.33 g/m2,平均丰度为50.06 ind./m2.H′较高,四个月份指数范围值1.35～1.89,J范围值0.40～0.54,D范围值达到4.64～5.16.四个月份各类群生物组成中,生物量及丰度均以软体动物居首位,长江口滩涂底栖生物主要种类有微小螺、无齿相手蟹、天津厚蟹、卷曲裸嬴蜚.应用等级聚类分析和非度量多维标度排序分析发现,9月、10月为一组,11月、12月为一组.ABC曲线结果显示长江口滩涂底栖动物9月、10月受到严重干扰,12月也受到了一定程度上的扰动.
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