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黄河三角洲南部潮间带大型底栖动物群落结构及多样性

冷宇1,2,刘一霆1,2,刘霜1,2,张洪亮1,2,张爱君1,2,刘旭东1,2**   

  1. (1山东省海洋生态环境与防灾减灾重点实验室, 山东青岛 266033; 2国家海洋局北海环境监测中心, 山东青岛 266033)
  • 出版日期:2013-11-10 发布日期:2013-11-10

Community structure and diversity of macrobenthos in southern intertidal zone of Yellow River Delta, China.

LENG Yu1,2, LIU Yi-ting1,2,  LIU Shuang1,2, ZHANG Hong-liang1,2, ZHANG Ai-jun1,2, LIU Xu-dong1, 2**   

  1. (1Shandong Provincial Key Laboratory of Marine Ecology and Environment & Disaster Prevention and Mitigation, Qingdao 266033, Shandong, China; 2North China Sea Environment Monitoring Center, State Oceanic Administration, Qingdao 266033, Shandong, China)
  • Online:2013-11-10 Published:2013-11-10

摘要: 于2004—2010年5和8月对黄河口三角洲南部小岛河口潮间带的大型底栖动物进行调查,共采集到潮间带生物89种,以多毛类、软体动物和甲壳动物为主,分别占总种数的34.8%、29.2%和27.0%;高潮带优势种主要为天津厚蟹(Helice tientsinensis)、日本大眼蟹(Macrophthalmus japonicas),中、低潮带的主要优势种主要为光滑河蓝蛤(Potamocorbula laevis)、泥螺(Bullacta exarata)、托氏虫昌螺(Umbonium thomasi)和四角蛤蜊(Mactra veseriformis)。Shannon多样性指数、Margalef丰富度指数和Pielou均匀度指数历年来平均值分别为1.46、1.15和0.66,其中Shannon多样性指数及Pielou均匀度指数近年来有所上升。物种分布存在明显的分潮带现象,而年际间并无显著变化,这也与聚类分析的结果相吻合。分析发现,自2005年建设堤坝之后,由于高潮带生境条件发生了变化,高潮带生物资源量明显升高。与历史资料相比,调查区域内优势种类变化不大,但多毛类占据了更大的比重,这也与调查区域内人为干扰、部分生态环境变化等有关。

关键词: 生态移民安置区, 利益相关者, 风险识别, 生态风险

Abstract: In May and August, 2004-2010, an investigation was conducted on the macrobenthos diversity in the southern intertidal zone of the Yellow River Delta. A total of 89 macrobenthos species were collected, most of which were polychaetes, crustacean, and mollusks, accounting for 34.8%, 29.2% and 27.0% of the total, respectively. Helice tientsinensis and Macrophthalmus japonicas were the dominant species in high tidal zone, while Potamocorbula laevis, Bullacta exarata, Umbonium thomasi, and Mactra veseriformis were dominated in mid and low tidal zones. The average Shannon index, Margalef index, and Pielou evenness index were 146, 115, and 0.66, respectively, and the Shannon index and Pielou index showed an upward trend. The species distribution had an obvious difference in different tidal zones, but less difference among years, which was also shown by cluster analysis. Due to the changes of habitat conditions since 2005 when the dams were established, the bioresources in the high tide zone increased obviously. As compared with historical data, the composition of dominant species in the study area in 2004-2010 was relatively stable, but the polychaetes occupied larger proportion, which was related to the human activities and the eco-environment change.

Key words: ecological risk, stakeholders, risk identification., ecological migrant settlement