| 南淝河和十八联圩湿地底栖动物群落结构特征及其与环境因子的关系 |
| Macroinvertebrate Community Structure and Its Relationship with Environmental Factors in Shibalianwei Wetland and Nanfei River |
| 投稿时间：2021-04-07 修订日期：2022-03-21 |
| DOI：10.15928/j.1674-3075. 202104070098 |
| 中文关键词:大型底栖动物 群落结构 氨氮 十八联圩湿地 南淝河 |
| 英文关键词:Shibalianwei wetland Nanfei River macroinvertebrate community structure NH4+-N sediment heavy metals |
| 基金项目:上海海洋大学十八联圩生态湿地本底资源调查项目 |
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| 中文摘要: |
| 研究十八联圩湿地及南淝河底栖动物群落及环境因子，分析底栖动物群落结构特征并进行水质生物学评价，为十八联圩湿地乃至南淝河的生态治理提供科技支撑。调查时间2018年7月，调查站位十八联圩湿地46个、南淝河5个。共采集到大型底栖动物45种，隶属于3门20科35属。十八联圩湿地内大型底栖动物优势种有霍甫水丝蚓（Limnodrilus hoffmeisteri）、梨形环棱螺（Bellamya purificata）、多巴小摇蚊（Micropsectra chuzeprima）、黄色羽摇蚊（Chironomus flaviplumus）、中国长足摇蚊（Tanypus chinensis）,南淝河底栖动物优势种为霍甫水丝蚓（Limnodrilus hoffmeisteri）。生物学污染指数评价结果，十八联圩湿地内重污染站位共有32个，α中污染站位9个，β中污染站位2个，而轻污染站位仅3个；南淝河的5个站位均为重污染状态。冗余分析结果显示，NH4+-N、CODMn、Pb、重金属Cd是影响大型底栖动物群落结构的主要环境因子，其中NH4+-N是造成十八联圩湿地与南淝河底栖动物群落结构差异的关键因子。十八联圩湿地与南淝河有机污染、重金属污染及富营养化程度均较为严重，区域内生物多样性均较低。 |
| 英文摘要: |
| Shibalianwei wetland receives and purifies the water of Nanfei River before it flows into Chaohu Lake, and is a green wetland and ecological corridor for Hefei City. In July, 2018, we investigated the macroinvertebrates and environmental factors (water quality indices and sediment heavy metal pollution) at 46 sampling sites in Shibalianwei wetland and 5 sampling sites in Nanfei River. The macroinvertebrate community structure and its relationship with environmental factors were then analyzed based on the results. The aim was to provide scientific support for the ecological management of Shibalianwei wetland and Nanfei River. A total of 45 macroinvertebrate species from 35 genera, 20 families and 3 phyla were identified, and consisting of 39 species in Shibalianwei wetland and 6 species in Nanfei River. Limnodrilus hoffmeisteri, Bellamya purificata, Micropsectra chuzeprima, Chironomus flaviplumus and Tanypus chinensis were the dominant species in Shibalianwei wetland, while the dominant species was Limnodrilus hoffmeisteri in Nanfei River, accounting for 98.52% of the total density. Macroinvertebrate diversity was low in both areas, and the ranges of the Shannon-Wiener Diversity Index (H') for Shibalianwei Wetland and Nanfei River were 0-1.73 and 0.04-0.53, with average values of 0.72 and 0.20. The Biological Pollution Index (BPI) was used to evaluate the ecological status of the study area: 32 sites in Shibalianwei Wetland were heavily polluted, 11 sites moderately polluted and 3 sites lightly polluted, and all 5 sites of Nanfei River were heavily polluted. Redundancy analysis showed that NH4+-N, CODMn, and the heavy metals Pb and Cd were the primary factors affecting macroinvertebrate community structure. Regression clustering analysis showed that NH4+-N was the key factor leading to differences in the community structures of Shibalianwei wetland and Nanfei River. Overall, organic and heavy metal pollution, eutrophication and low biodiversity are serious in Shibalianwei wetland and Nanfei River. |
| 周东,雷琦,杜彩丽,张玮,王丽卿,张瑞雷.2022.南淝河和十八联圩湿地底栖动物群落结构特征及其与环境因子的关系[J].水生态学杂志,43(2):54-61. |
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