该【长江三角洲淡水底栖动物耐污值修订和BI指数水质评价分级研究 】是由【niuww】上传分享，文档一共【3】页，该文档可以免费在线阅读，需要了解更多关于【长江三角洲淡水底栖动物耐污值修订和BI指数水质评价分级研究 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。长江三角洲淡水底栖动物耐污值修订和BI指数水质评价分级研究 论文题目：长江三角洲淡水底栖动物耐污值修订和BI指数水质评价分级研究 摘要： 长江三角洲地区作为中国的经济重要区域之一，水环境质量的评价对于经济发展以及生态保护具有重要意义。淡水底栖动物是水生生物的重要组成部分，对水体质量变化敏感。本研究主要通过对长江三角洲地区淡水底栖动物耐污值的修订以及BI指数的水质评价分级，为该地区的水环境管理提供科学依据。 引言： 水环境污染已成为全球关注的焦点问题，不仅直接影响人类健康，还对生态系统造成严重破坏。水质评价是水环境管理和保护的重要手段之一。淡水底栖动物在水体中扮演着监测指示物种的角色，其对水质的敏感性可以反映水环境的变化。 方法： 本研究选取长江三角洲地区多个站点的底栖动物样品，并根据已有的研究成果和相关文献，对淡水底栖动物的耐污值进行修订。同时，基于修订后的耐污值数据，计算BI（Biotic Index）指数，以评估水质的优良程度，并将其分为不同的等级。 结果与讨论： 根据耐污值修订结果，不同的底栖动物对于环境污染的耐受性有所差异。修订后的耐污值数据与先前研究结果具有较好的一致性，说明修订结果的可靠性和有效性。通过计算BI指数，我们可以评估不同站点的水质状况。根据BI指数值的大小，将长江三角洲地区的水体分为优良、良好、一般、较差和差五个等级，从而为水环境管理提供科学依据。 结论： 通过对长江三角洲地区淡水底栖动物耐污值的修订和BI指数的水质评价分级研究，我们可以得出以下结论：（1）修订后的耐污值数据可作为该地区水质评价的重要参考；（2）通过BI指数的计算，可以对不同站点的水体质量进行分类评估；（3）该研究结果为长江三角洲地区的水环境管理和保护提供了科学依据。 关键词：长江三角洲；淡水底栖动物；耐污值修订；BI指数；水质评价分级 Abstract: As one of the economically important regions in China, the evaluation of water environment quality is of great significance for both economic development and ecological protection in the Yangtze River Delta region. Freshwater benthic animals are an important component of aquatic organisms and are sensitive to changes in water quality. The present study mainly revises the tolerance values of freshwater benthic animals in the Yangtze River Delta region and evaluates water quality grading based on the BI (Biotic Index) index, aiming to provide a scientific basis for water environmental management in this area. Introduction: Water pollution has become a global concern, which not only directly affects human health but also causes severe damage to ecosystems. Water quality assessment is one of the important means for water environmental management and protection. Freshwater benthic animals serve as indicator species for monitoring, and their sensitivity to water quality can reflect changes in the water environment. Methods: In this study, benthic animal samples from multiple sites in the Yangtze River Delta region were selected. Based on existing research and relevant literature, the tolerance values of freshwater benthic animals were revised. Meanwhile, the BI index was calculated based on the revised tolerance values to assess the water quality level and classify it into different grades. Results and Discussion: According to the revised tolerance values, different benthic animals showed varying degrees of resistance to environmental pollution. The revised tolerance values are consistent with previous research results, indicating the reliability and effectiveness of the revision. By calculating the BI index, the water quality status of different sites can be evaluated. Based on the magnitude of the BI index, the water bodies in the Yangtze River Delta region can be classified into five grades: excellent, good, fair, poor, and bad, providing a scientific basis for water environmental management. Conclusion: By revising the tolerance values of freshwater benthic animals and evaluating water quality grading based on the BI index in the Yangtze River Delta region, the following conclusions can be drawn: (1) The revised tolerance values can serve as important references for water quality assessment in this region; (2) By calculating the BI index, water quality of different sites can be assessed and classified; (3) The results of this study provide a scientific basis for water environmental management and protection in the Yangtze River Delta region. Keywords: Yangtze River Delta; freshwater benthic animals; tolerance value revision; BI index; water quality assessment grading.
