Ecology and Environment ›› 2024, Vol. 33 ›› Issue (1): 101-110.DOI: 10.16258/j.cnki.1674-5906.2024.01.011

• Research Article • Previous Articles     Next Articles

Community Structure and Influencing Factors of Macroinvertebrate in Urban Rivers of Dongguan

LI Qing1,2(), ZHANG Mengyue1, YU Mingqiao1, LI Xiaoxuan1, CHANG Ming1, CHEN Libin2, DING Sen1,*()   

  1. 1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, P. R. China
    2. College of Resources and Environment, Yangtze University, Wuhan 430000, P. R. China
  • Received:2023-07-30 Online:2024-01-18 Published:2024-03-19
  • Contact: DING Sen

东莞城市河流大型底栖动物群落结构及影响因子

李晴1,2(), 张梦悦1, 于明乔1, 李小璇1, 常明1, 陈立斌2, 丁森1,*()   

  1. 1.环境基准与风险评估国家重点实验室/中国环境科学研究院,北京 100012
    2.长江大学资源与环境学院,湖北 武汉 430000
  • 通讯作者: 丁森
  • 作者简介:李晴(1997年生),女,硕士研究生,主要从事水生生物生态学研究。E-mail: lq2512735858@163.com
  • 基金资助:
    国家重点研发计划(2021YFC3201003);黄河流域生态保护和高质量发展联合研究一期项目(2022-YRUC-01-0603-01)

Abstract:

The research of effects of urbanization process on the structure and composition of river ecosystem is the basis of scientific planning for urban aquatic environment protection. To explore the spatial and temporal variation characteristics of macroinvertebrate community structure in urban rivers, the macroinvertebrates were sampled in the Dongjiang River, Dongyin Canal and Shima River in Dongguan City during dry season (from December 2021 to January 2022) and wet season (from May to June 2022). The results showed that arthropods were the dominant taxa and followed by mollusks in these rivers. According to the family-level classification, Nereisidae, Cipanidae, Chironomidae, Palaemonidae were the common units in dry season, whereas Cipanidae and Tubificidae were the common units in wet season. Limnodrilus hoffmeisteri, Glossiphonia lata, Bellamya purificatas, Parafossarula sinensis, Limnoperna lacustri, Gammarus sp. and Limnoper lacustris mainly contributed to the spatial and temporal differences in the community structure. The density and biomass in dry season are higher than those in wet season. The density and biomass in the Shima River are higher than those in the Dongjiang River and the Dongyin Canal. The species richness was 38-42 in dry season, 28-31 in wet season, and 46-52 in both seasons, respectively, according to the field survey and statistical results. The highest species number (35-38) was found in the Shima River, while the lowest species number (23-27) was in the Dongjiang River. CCA analysis showed that macroinvertebrate community structure was significantly influenced by water temperature, permanganate, dissolved oxygen, total dissolved solids and heavy metals (copper, mercury, zinc and arsenic) in sediment in dry season, whereas affected by dissolved oxygen and total dissolved solids in wet season. The results indicate that water pollution control and channel habitat diversity restoration are important measures for future management of Dongguan urban rivers.

Key words: urban river, macroinveterbrates, community structure, characteristics of spatiotemporal variation, environmental factor, bio-diversity

摘要:

了解城市化进程对河流生态系统结构组成的影响是城市水生态环境保护的基础。为探究城市河流大型底栖动物群落结构的时空变化特征,于2021年12月-2022年1月和2022年5-6月对东莞市内东江、东引运河、石马河3条城市河流开展大型底栖动物监测。结果显示,东莞城市河流大型底栖动物种类组成上节肢动物占优势地位,其次是软体动物。科级分类水平上,枯水期常见科级分类单元包括齿吻沙蚕科、田螺科、摇蚊科、长臂虾科等,丰水期常见科级分类单元为田螺科、颤蚓科等。霍甫水丝蚓Limnodrilus hoffmeisteri、宽身舌蛭Glossiphonia lata、梨形环棱螺Bellamya purificata、中华沼螺Parafossarulus sinensis、钩虾属一种Gammarus sp.和湖沼股蛤Limnoper lacustris是造成群落结构时空差异的关键物种。物种丰富度和现存量枯水期高于丰水期,石马河高于东江和东引运河。基于统计学的估计值表明,整体上大型底栖动物物种数46-52种,枯水期约38-42种,丰水期约28-31种,石马河物种数最高(约35-38种)而东江最低(约23-27种)。β多样性丰水期高于枯水期,东引运河最高而石马河最低。CCA分析发现水温、高锰酸盐指数、总溶解性固体和底质重金属(铜、汞、锌、砷)是枯水期大型底栖无脊椎动物群落结构的主要影响因子;溶解氧和总溶解性固体是丰水期的主要影响因子。该研究结果表明减少水质污染、增加河道生境多样性是东莞城市河流未来生态修复的管理方向。

关键词: 城市河流, 大型底栖动物, 群落结构, 时空特征, 环境影响要素, 生物多样性

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