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| 南昌红角洲景观渠水生态现状评价及对策研究 |
| Ecological Evaluation and Countermeasure Research of Landscape Water in Hongjiaozhou of Nanchang |
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| DOI： |
| 中文关键词: 城市景观水体 富营养化 水生态修复 红角洲景观渠 南昌市 |
| 英文关键词: Urban landscape water Eutrophication Water ecological restoration Hongjiaozhou landscape ditch Nanchang |
| 基金项目:贵州省科学技术基金资助项目(黔科合基础［2018］1169)；中国电建集团贵阳勘测设计研究院有限公司电力科学技术发展基金资助项目(YJ2016-17) |
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| 中文摘要: |
| 以南昌市红角洲景观渠为研究对象，通过水生生境调查、水质监测、水生生物资源调查等方式对其水生态现状进行了综合评价。研究发现，红角洲景观渠为劣Ⅴ类水体，主要超标指标为总氮、氨氮、总磷，各渠道的综合营养状态指数在5228～6820之间，达到了轻度-中度富营养化水平。红角洲景观渠共检测到90种浮游植物、48种浮游动物、10种鱼类，优势藻类为硅藻、绿藻和蓝藻，优势浮游动物为原生动物和轮虫，优势鱼类为杂食性鱼类。红角洲景观渠存在生境多样性低、水体自净能力受损、生物群落结构简单等水生态问题，建议从截污控源、生境改善、水力调控、群落构建等4个层面尽快开展水生态修复。 |
| 英文摘要: |
| In this study， the current ecological status of Hongjiaozhou landscape water in Nanchang was comprehensively evaluated through hydrophytic habitat investigation， water quality monitoring and aquatic organism survey. Results showed that the water quality was inferior to class Ⅴ. The main indicators exceeding the standards were total nitrogen， ammonia nitrogen and total phosphorus. The comprehensive trophic level index was between 5228 and 6820， showing the landscape water was slight moderate eutrophic. A total of 90 phytoplankton species， 48 zooplankton species and 10 fish species were detected， bacillariophyta， chlorophyta， cyanobacteria， protozoa， rotifer and omnivorous fish were dominated. It was concluded that Hongjiaozhou landscape water had ecological problems such as lower habitat diversity， weak water self purification capacity and simple community structure. It proposed on pollution source control， habitat improvement， hydroenergy regulation and community optimization for water ecological restoration. |
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