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基于浮游植物生物完整性指数的淮河中游水生态健康评价

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  • NSTL
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于2019年6月(平水期)、9月(丰水期)以及2020年2月(枯水期)，在淮河中游三河尖至洪山头段，设置了 28个采样断面，进行浮游植物及水环境质量调查。基于淮河中游浮游植物群落结构及浮游植物形态功能群(Morphologically Based Functional Group，MBFG)分类数据，对3个水文期的水环境分别构建浮游植物生物完整性指数(P-IBI)评价体系，并进行生态健康评价。采用综合营养状态指数，作为划分标准判定参照断面和受损断面，并对候选指标进行分布范围检验、相关性检验和判别能力分析，筛选出各水文期的P-IBI核心参数，并采用比值法，确定分级评价标准，对淮河中游的水环境进行水生态健康评价。研究结果表明，在淮河中游的水体中，共鉴定出浮游植物8门128种，形态功能群分类中的7类功能群在3个水文期都有检出;平水期的浮游植物优势功能群为Ⅲ类功能群+Ⅳ类功能群+Ⅴ功能群+Ⅵ类功能群，丰水期的为Ⅲ功能群+Ⅴ功能群+Ⅵ功能群+Ⅶ功能群，枯水期的为Ⅰ功能群+Ⅵ功能群+Ⅶ功能群;平水期、丰水期和枯水期的水生态健康等级分别为亚健康、中度干扰和轻度干扰，全年75。00％的调查断面健康状态处于轻度干扰及以上水平，整体水生态修复成效较好，水生态健康状况呈现出下游优于上游，闸下优于闸上的分布格局。
Assessment of Water Ecological Health in the Middle Reaches of Huaihe River based on Phytoplankton Biological Integrity Index
In June 2019(flat water period),September(wet season)and February 2020(dry season),28 sampling sections were set up in the section from Sanhejian to Hongshantou in the middle reaches of Huaihe River to conduct phytoplankton and water quality environmental surveys.Based on the taxonomic data of phytoplankton community structure and morphologically based function group(MBFG)in the middle reaches of Huaihe River,the phytoplankton biological integrity index(P-IBI)evaluation system was constructed for the three hydrological periods,and the ecological health was evaluated.The comprehensive trophic status index was used as the classification standard to determine the reference section and the damaged section,and the distribution range test,correlation test and discrimination ability analysis of the candidate indicators were carried out to screen out the core parameters of P-IBI in each hydrological period,and the ratio method was used to determine the grading evaluation standard,and the water ecological health evaluation of the middle reaches of the Huaihe River was evaluated.The results showed that a total of 128 species and 8 phyla of phytoplankton were identified in the middle reaches of Huaihe River,and 7 functional groups were detected in the three hydrological periods in the phytoplankton morphological functional group classification,and the dominant phytoplankton functional groups were Ⅲ+Ⅳ+Ⅴ+Ⅵ(flat water period),Ⅲ+Ⅴ+Ⅵ+Ⅶ(wet season),and Ⅰ+Ⅵ+Ⅶ(dry season).The water ecological health grades of"sub-health","moderate disturbance"and"mild disturbance"were respectively"sub-healthy","moderate disturbance"and"mild disturbance"during the normal water period,wet water period and dry water period,respectively,and 75.00％of the health status of the survey section was at the level of"slight disturbance"or above,indicating that the overall water ecological restoration effect was good,and the water ecological health status showed a distribution pattern that the downstream was better than the upstream,and the lower part of the sluice was better than the upper sluice.The evaluation results well reflect the water ecological health status of different hydrological periods and river sections in the middle reaches of Huaihe River,which can provide data support and theoretical basis for the governance and water ecological restoration of Huaihe River.

middle reaches of Huaihe Riverphytoplanktonfounctional groupbiological integrity indexassessment of water ecological health

周彦锋、王东伟、何利聪、俞振飞、尤洋

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中国水产科学研究院淡水渔业研究中心,农业农村部淡水渔业和种质资源利用重点实验室,江苏无锡 214081

南京农业大学无锡渔业学院,江苏无锡 214081

淮河中游 浮游植物 功能群 生物完整性指数 水生态健康评价

安徽省重点水域水生生物资源监测项目中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金项目中国水产科学研究院淡水渔业研究中心基本科研业务费资助项目国家农业科学渔业资源环境滨湖观测实验站项目

ZF2021-18-07862023TD652023JBFM09NAES013FS05

2024

10.13248/j.cnki.wetlandsci.2024.04.001

湿地科学
中国科学院 东北地理与农业生态研究所

湿地科学

CSTPCD北大核心
影响因子：1.52
ISSN：1672-5948
年,卷(期)：2024.22(4)
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