摘要
为更准确了解秦皇岛市河流水体健康状况,对石河、新河、戴河、东沙河、饮马河、青龙河、西洋河等7 条河流的15 个断面的大型底栖无脊椎动物进行了采样调查.采用底栖生物完整性指数(B-IBI)对结果进行评价.此次调查共鉴定出大型底栖无脊椎动物 41 种,归属于 4门7 纲28 科.优势种为萝卜螺属一种、摇蚊属一种和大粗腹摇蚊属一种.从分类单元数、群落结构组成、耐污能力、生活型和功能摄食类群 5 个类别选取 18 个参数,筛选出总分类单元数、大型无脊椎动物敏感类群评价指数(BMWP指数)和刮食者个体数百分比作为构建B-IBI指数的核心参数.B-IBI评价结果表明:西洋河和新河河流生态健康状态为非常健康;东沙河、饮马河、青龙河、戴河、石河河流生态健康状态为一般,没有出现健康状态为差或极差的河流.
Abstract
To obtain a precise assessment of the water quality status in the rivers of Qinhuangdao City,an extensive sampling survey was undertaken,focusing on the large benthic invertebrate com-munities within 15 distinct sections of seven prominent rivers,namely Shi River,Xin River,Dai River,Dongsha River,Yinma River,Qinglong River and Xiyang River.The obtained data were subsequently analyzed utilizing the Benthic Index of Biotic Integrity(B-IBI).A total of 41 species belonging to the macrobenthic invertebrate fauna were identified classifying them into four phyla,seven classes and twenty-eight families.The prevailing species included Radix sp.,Chironomus sp.and Rheopelopia sp.A set of 18 parameters were selected from five categories namely taxon number,community structure,pollution tolerance,life type and functional feeding groups.The core parameters for the construction of the Biological Index of Benthic Integrity(B-IBI)index com-prised the total taxon number the macroinvertebrate sensitive group evaluation index(BMWP in-dex)and the percentage of predators.The results of the B-IBI evaluation indicated that the ecologi-cal health status of the Xiyang River and Xinhe River was categorized as excellent,while the Dongsha River,Yinma River,Qinglong River,Daihe River and Shihe River demonstrated a rela-tively moderate ecological health status.Notably,no rivers were classified as having poor or ex-tremely poor ecological health.
基金项目
入海河流及近岸海域生态修复河北省工程研究中心开放课题(GCY202303)
河北省高等学校科学技术研究项目(QN2024047)
NETL
NSTL
万方数据