The health conditions of Liao River were assessed using 25 sampling sites in April 2005, with water quality index, biotic index and physical habitat quality index. Based on the method of cluster analysis (CA) for wa...The health conditions of Liao River were assessed using 25 sampling sites in April 2005, with water quality index, biotic index and physical habitat quality index. Based on the method of cluster analysis (CA) for water quality indices, it revealed that heavily polluted sites of Liao River are located at estuary and mainstream. The aquatic species surveyed were attached algae and benthic invertebrates. The result showed that the diversity and biomass of attached algae and benthic index of biotic integrity (B-IBI) were degrading as the chemical and physical quality of water bodies deteriorating. Physiochemical parameters, BODs, CODcr, TN, TP, NH3-N, DO, petroleum hydrocarbon and conductivity, were statistically analyzed with principal component analysis and correlation analysis. The statistical results were incorporated into the integrated assessing water quality index, combining fecal coliform count, attached algae diversity, B-IBI and physical habitat quality score. A comprehensive integrated assessing system of fiver ecological health was established. Based on the systimetic assessment, the assessed sites are categorized into 9 "healthy" and "sub-healthy" sites and 8 "sub-sick" and "sick" sites.展开更多
开展了青浦区西部地区大型底栖无脊椎动物调查,基于底栖生物完整性指数(benthic index of biotic integrity,B-IBI)评价体系,评价了区域水生态健康状况,分析了B-IBI指数与水质指标及相关指数的关系,探讨了B-IBI指数在湖荡地区的适用性....开展了青浦区西部地区大型底栖无脊椎动物调查,基于底栖生物完整性指数(benthic index of biotic integrity,B-IBI)评价体系,评价了区域水生态健康状况,分析了B-IBI指数与水质指标及相关指数的关系,探讨了B-IBI指数在湖荡地区的适用性.结果表明:研究区域水生态健康状况总体良好,健康及亚健康样点占比67.7%,湖泊及湖荡区域的B-IBI指数多优于河流;B-IBI指数对水体有机污染、富营养化有较好的指示作用;各评价指数之间具有显著相关性,但B-IBI指数与丰富度指数、多样性指数评价结果有所差异;B-IBI指数在湖荡区水生态评价中具有很好的适用性.展开更多
为了解海河流域典型供水型水库的水生态健康状况,于2021年4-6月对流域14座典型水库的大型底栖动物进行了调查,构建并应用大型底栖动物完整性指数(Benthic Index of Biotic Integrity,B-IBI)对水库的水生态健康状况进行评价。调查共采集...为了解海河流域典型供水型水库的水生态健康状况,于2021年4-6月对流域14座典型水库的大型底栖动物进行了调查,构建并应用大型底栖动物完整性指数(Benthic Index of Biotic Integrity,B-IBI)对水库的水生态健康状况进行评价。调查共采集到大型底栖动物56个分类单元,包括节肢动物门40种,其中昆虫纲35种,占据明显优势;此外,软体动物门8种,环节动物门7种,扁形动物门1种。从大型底栖动物的耐污值(ToleranceValue,TV)看,TV≤3的敏感类群12种,占21.4%;TV≥7的耐污类群所21种,占37.5%。调查中出现频率最高的3个物种分别为椭圆萝卜螺(Radix swinhoei,出现频率为78.6%)、环足摇蚊属一种(Cricotopussp.,64.3%)和摇蚊属一种(Chironomussp.,64.3%),3个种均为耐污值较高的种类。选择分类单元数、主要类群的相对丰度、耐污能力和功能摄食群等四大类合计25个指标作为构建大型底栖动物完整性指数的候选指标,经分布范围检验、判别能力分析和Pearson相关性分析,最终确定总分类单元数、EPT类群数量百分比、Hilsenhoff生物指数和滤食者数量等4个指数为构成海河流域典型水库大型底栖动物完整性指数评价的核心指数。结果显示,海河流域的14座典型水源型水库中,约1/3水库的水生态状况为健康状态,2/3为亚健康、一般和差的状态,且整体呈现山区水库水生态状况优于平原水库。基于大型底栖动物完整性指数对海河流域的典型水库的水生态状况进行评价,弥补了仅使用单一生物评价指数的不足。该研究所形成的评价结果对进一步掌握海河流域水库的水生态状况及其保护修复提供数据参考和技术支撑。展开更多
河流是重要的生态系统。随着经济发展,人类活动对河流生态系统的影响日益严重。为了解海河流域河流水生态健康状况,2020年在海河流域布设了39个点位(9个参照点,30个受损点)进行大型底栖动物调查,构建大型底栖动物生物完整性评价指数(Ben...河流是重要的生态系统。随着经济发展,人类活动对河流生态系统的影响日益严重。为了解海河流域河流水生态健康状况,2020年在海河流域布设了39个点位(9个参照点,30个受损点)进行大型底栖动物调查,构建大型底栖动物生物完整性评价指数(Benthic Index of Biotic Integrity,B-IBI),对海河流域河流水生态健康状况进行评价。结果表明:海河流域河流共检测到大型底栖动物106种,隶属于4门8纲20目50科,其中扁形动物门1种,环节动物门6种,软体动物门12种,节肢动物门87种。中华齿米虾(Caridina denticulate sinensis)、逸仙丽翅蜉(Alainites yixiani)、摇蚊属一种(Chironomus sp.)、斑点小划蝽(Micronectaguttata)为海河流域内的优势种。通过对21个候选参数进行分布范围检验、判别能力分析和Pearson相关性分析,最终确定海河流域河流B-IBI指标体系由总分类单元数、每个分类单元的平均得分(ASPT指数)和Shannon-Wiener指数构成。采用比值法统一量纲计算得到B-IBI值。以参照位点25%分位数法建立了海河流域B-IBI评价标准。结果显示,海河流域河流整体健康状况呈现良好,39个采样点中有13个处于健康状态,12个处于良好状态,10个处于一般状态,3个处于较差状态,1个处于很差状态。整体来看,海河流域河流北部和西部山区健康状态优于南部平原地区,人类活动强度对河流健康影响较大。该研究构建的B-IBI评价体系为海河流域的河流健康监测和评价提供了重要方法,研究结果可为海河流域水生态系统的修复和保护提供基础数据支撑和科学依据。展开更多
基金supported by the Project of Chinese National Special Science and Technology Programme of Water Pollution Control and Treatment "Techniqueof Watershed Aquatic Ecological Function Zoning and Quality Target Management" (No. 2008ZX07526)the Special Project of Central Publicinterest Scientific Institution Basal Research "Estimation of Margin of Safety(MOS) of TMDL Based on Uncertainty Analysis" (No.2007KYYW32)
文摘The health conditions of Liao River were assessed using 25 sampling sites in April 2005, with water quality index, biotic index and physical habitat quality index. Based on the method of cluster analysis (CA) for water quality indices, it revealed that heavily polluted sites of Liao River are located at estuary and mainstream. The aquatic species surveyed were attached algae and benthic invertebrates. The result showed that the diversity and biomass of attached algae and benthic index of biotic integrity (B-IBI) were degrading as the chemical and physical quality of water bodies deteriorating. Physiochemical parameters, BODs, CODcr, TN, TP, NH3-N, DO, petroleum hydrocarbon and conductivity, were statistically analyzed with principal component analysis and correlation analysis. The statistical results were incorporated into the integrated assessing water quality index, combining fecal coliform count, attached algae diversity, B-IBI and physical habitat quality score. A comprehensive integrated assessing system of fiver ecological health was established. Based on the systimetic assessment, the assessed sites are categorized into 9 "healthy" and "sub-healthy" sites and 8 "sub-sick" and "sick" sites.
文摘开展了青浦区西部地区大型底栖无脊椎动物调查,基于底栖生物完整性指数(benthic index of biotic integrity,B-IBI)评价体系,评价了区域水生态健康状况,分析了B-IBI指数与水质指标及相关指数的关系,探讨了B-IBI指数在湖荡地区的适用性.结果表明:研究区域水生态健康状况总体良好,健康及亚健康样点占比67.7%,湖泊及湖荡区域的B-IBI指数多优于河流;B-IBI指数对水体有机污染、富营养化有较好的指示作用;各评价指数之间具有显著相关性,但B-IBI指数与丰富度指数、多样性指数评价结果有所差异;B-IBI指数在湖荡区水生态评价中具有很好的适用性.
文摘为了解海河流域典型供水型水库的水生态健康状况,于2021年4-6月对流域14座典型水库的大型底栖动物进行了调查,构建并应用大型底栖动物完整性指数(Benthic Index of Biotic Integrity,B-IBI)对水库的水生态健康状况进行评价。调查共采集到大型底栖动物56个分类单元,包括节肢动物门40种,其中昆虫纲35种,占据明显优势;此外,软体动物门8种,环节动物门7种,扁形动物门1种。从大型底栖动物的耐污值(ToleranceValue,TV)看,TV≤3的敏感类群12种,占21.4%;TV≥7的耐污类群所21种,占37.5%。调查中出现频率最高的3个物种分别为椭圆萝卜螺(Radix swinhoei,出现频率为78.6%)、环足摇蚊属一种(Cricotopussp.,64.3%)和摇蚊属一种(Chironomussp.,64.3%),3个种均为耐污值较高的种类。选择分类单元数、主要类群的相对丰度、耐污能力和功能摄食群等四大类合计25个指标作为构建大型底栖动物完整性指数的候选指标,经分布范围检验、判别能力分析和Pearson相关性分析,最终确定总分类单元数、EPT类群数量百分比、Hilsenhoff生物指数和滤食者数量等4个指数为构成海河流域典型水库大型底栖动物完整性指数评价的核心指数。结果显示,海河流域的14座典型水源型水库中,约1/3水库的水生态状况为健康状态,2/3为亚健康、一般和差的状态,且整体呈现山区水库水生态状况优于平原水库。基于大型底栖动物完整性指数对海河流域的典型水库的水生态状况进行评价,弥补了仅使用单一生物评价指数的不足。该研究所形成的评价结果对进一步掌握海河流域水库的水生态状况及其保护修复提供数据参考和技术支撑。
文摘河流是重要的生态系统。随着经济发展,人类活动对河流生态系统的影响日益严重。为了解海河流域河流水生态健康状况,2020年在海河流域布设了39个点位(9个参照点,30个受损点)进行大型底栖动物调查,构建大型底栖动物生物完整性评价指数(Benthic Index of Biotic Integrity,B-IBI),对海河流域河流水生态健康状况进行评价。结果表明:海河流域河流共检测到大型底栖动物106种,隶属于4门8纲20目50科,其中扁形动物门1种,环节动物门6种,软体动物门12种,节肢动物门87种。中华齿米虾(Caridina denticulate sinensis)、逸仙丽翅蜉(Alainites yixiani)、摇蚊属一种(Chironomus sp.)、斑点小划蝽(Micronectaguttata)为海河流域内的优势种。通过对21个候选参数进行分布范围检验、判别能力分析和Pearson相关性分析,最终确定海河流域河流B-IBI指标体系由总分类单元数、每个分类单元的平均得分(ASPT指数)和Shannon-Wiener指数构成。采用比值法统一量纲计算得到B-IBI值。以参照位点25%分位数法建立了海河流域B-IBI评价标准。结果显示,海河流域河流整体健康状况呈现良好,39个采样点中有13个处于健康状态,12个处于良好状态,10个处于一般状态,3个处于较差状态,1个处于很差状态。整体来看,海河流域河流北部和西部山区健康状态优于南部平原地区,人类活动强度对河流健康影响较大。该研究构建的B-IBI评价体系为海河流域的河流健康监测和评价提供了重要方法,研究结果可为海河流域水生态系统的修复和保护提供基础数据支撑和科学依据。