基于底栖生物指数的辽东湾生态质量状况评价

发布时间：2018-06-30 06:59

本文选题：大型底栖动物 + 底栖生物指数　；参考：《海洋科学》2016年10期

【摘要】：以2007年7月辽东湾近岸海域获取的大型底栖动物样品和环境参数数据为基础,首次将W-statistic应用于该海域的生态质量状况评价,并结合Shannon-Wiener生物多样性指数及底栖生物完整性指数的评价结果全面分析其生态质量状况。结果表明,大多数离岸海域取样点的生态环境质量状况以轻度干扰为主,而北部河口区(如大辽河口、双台子河口)则以重度干扰为主,且沿河口区向外有明显的空间梯度。这跟入海河流携带大量的营养盐入湾从而导致河口区富营养化程度较高有关。各指数均能较为敏感地响应富营养化的空间梯度变化,且与富营养化指数显著相关;同时,3个指数之间呈显著的相关关系,能辨析北岸河口区组与近岸海域组的大型底栖动物群落显著性差异,适用于评价辽东湾的生态质量状况。
[Abstract]:Based on the samples of macrobenthos and environmental parameters obtained in the coastal area of Liaodong Bay in July 2007, W-statististic was applied to the assessment of ecological quality of the area for the first time. The ecological quality of Shannon-Wiener biodiversity index and benthos integrity index were analyzed comprehensively. The results show that the ecological environmental quality of the sampling sites in most offshore waters is mainly slightly disturbed, while the northern estuary (such as Daliao estuary and Shuangtaizi estuary) is heavily disturbed, and there is an obvious spatial gradient along the estuary. This is related to the eutrophication of estuary area caused by a large amount of nutrients carried into the bay by rivers entering the sea. Each index could sensitively respond to the spatial gradient of eutrophication, and was significantly correlated with the eutrophication index, and there was a significant correlation among the three indices. It can distinguish and analyze the significant difference of macrobenthos community between the north coast estuary group and the offshore group, which is suitable for evaluating the ecological quality of Liaodong Bay.
【作者单位】：中国环境科学研究院环境基准与风险评估国家重点实验室;中国环境科学研究院国家环境保护河口与海岸带环境重点实验室;
【基金】：国家自然科学青年基金项目(41406160) 国家环保公益性行业科研专项(201309007)~~
【分类号】：X826

【相似文献】