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首页> 外文期刊>Fresenius environmental bulletin >LIMITATION OF BIODIVERSITY INDEX IN ASSESSING ECOLOGICAL RESTORATION ENGINEERING FOR AN AQUATIC ECOSYSTEM DOMINATED BY CYANOBACTERIA
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LIMITATION OF BIODIVERSITY INDEX IN ASSESSING ECOLOGICAL RESTORATION ENGINEERING FOR AN AQUATIC ECOSYSTEM DOMINATED BY CYANOBACTERIA

机译：蓝藻对水生生态系统生态修复工程评价中生物多样性指标的局限性

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Inland, in particular incity lake ecosystems have long been affected by numerous types of human interventions that have a negative impact on their water quality and ecological state. Thus, restoration of the lake ecosystems is a preliminary process. Integrated ecological engineering for restoration (IEER) was conducted in two gulfs (total 6.01 km~2) of Lake Dianchi containing hypereutrophic water of frequent cyanobacterial blooms for four years. This technology consists of two main processes: (1) specially-designed equipment and filterfeeding fish to remove the cyanobacterial biomass, (2) re-plantation of macrophytes to restore aquatic ecological system. The biodiversity indices (Simpson-Wiener and Shannon) of the zooplankton and zoobenthos and the trophic state index (TSI) were used to assess the outcome of IEER. The results showed that the biodiversity index of zooplankton and zoobenthos have increased significantly in response to the improved growth conditions. The TSI values showed that the eutrophic level of the gulfs was not reduced, indicating that the IEER did not improve the water quality of the ecosystem. Failure of the IEER in improving water quality may partly resulted from the frequent cyanobacterial blooms. In future efforts should be made to consider species distribution, community structure, species interactions in addition to the biodiversity index and trophic state index.
机译：内陆，特别是城市湖泊生态系统长期以来受到多种类型的人类干预措施的影响，这些干预措施对其水质和生态状况产生负面影响。因此，恢复湖泊生态系统是一个初步过程。在滇池两个海湾（总计6.01 km〜2）中，进行了包含蓝藻频发的富营养化水的综合生态修复工程（IEER），为期四年。该技术包括两个主要过程：（1）专门设计的设备和滤食鱼以去除蓝藻生物量，（2）重新种植大型植物以恢复水生生态系统。浮游动物和底栖动物的生物多样性指数（辛普森-维纳和香农）和营养状态指数（TSI）用于评估IEER的结果。结果表明，随着生长条件的改善，浮游动物和底栖动物的生物多样性指数显着增加。 TSI值表明海湾的富营养化水平并未降低，这表明IEER并未改善生态系统的水质。 IEER无法改善水质的部分原因可能是频繁的蓝藻水华。在未来的工作中，除了生物多样性指数和营养状态指数外，还应考虑物种分布，群落结构，物种相互作用。

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