越南安江省水体地表水水质特征及底栖动物多样性

Q3 Environmental Science
N. Giao, Huynh Thi Hong Nhien, Truong Hoang Dan
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引用次数: 2

摘要

利用底栖动物进行水质评价因其成本低、环境友好而受到广泛关注。本研究于2018年3月雨季和9月旱季对安江省13个地点的水体和底栖动物样本进行了分析。结果表明,地表水受到有机质、悬浮物和大肠菌群的污染。底栖动物共28种,分为寡毛纲、多毛纲、昆虫纲、腹足纲和双壳纲5纲,其中双壳纲种类最多,占75%。干、湿季底栖动物密度从30个种群划分为干季3个种群和雨季6个种群,表明底栖动物组成的季节变化可能与水沙特征的变化有关。Pearson相关分析结果表明,底栖动物的组成与温度、pH、N-NH4+和N-NO3-密切相关。采用水质指数(WQI)、Shannon-Wiener多样性指数(H’)和相关分类单元平均分(ASPT)进行水质评价,结果表明,该地区的水质范围为中度污染(α - β-介面探针)到重度污染(多聚面探针)。利用底栖动物的理化指标与多样性指标进行水质鉴定存在不一致性,导致利用底栖动物进行水质指示可能导致水质失调。今后应进一步研究不同生态区底栖动物与水质的关系,以更好地表明底栖动物在快速诊断水质中的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characteristics of Surface Water Quality and Diversity of Zoobenthos in Water Bodies, An Giang Province, Vietnam
The use of zoobenthos to evaluate water quality has gained considerable interest due to its low cost and environmental friendliness. This study analyzed water and zoobenthos samples at 13 sites in the water bodies in An Giang province in the rainy season (on March) and dry season (on September) in 2018. The results showed that the surface water was contaminated by organic matters, suspended solids and coliforms. There was occurrence of 28 species of zoobenthos divided into five classes including Oligochaeta, Polychaeta, Insecta, Gastropoda, and Bivalvia in which Bivalvia was the most diverse class accounting for 75%. The densities of zoobenthos in the dry and wet season were from 30 divided into three clusters for the dry season and six clusters for the rainy season indicating seasonal variation of zoobenthos composition possibly due to variance of water and sediment characteristics. The results of Pearson correlation indicated that the composition of zoobenthos was strongly correlated with temperature, pH, N-NH4+ and N-NO3-. Using water quality index (WQI), Shannon-Wiener diversity index (H’) and associated average score per taxon (ASPT) for water quality assessment revealed that water quality ranges from medium (from α to β- mesosaprobe) to heavy pollution (Polysaprobe). There was inconsistency between using physicochemicals and diversity index of zoobenthos for water quality identification leading to the use of zoobenthos for water indication could result in misadjustment of water quality. Further study should investigate the relationship between zoobenthos and water quality in different ecological areas to better indicate role of zoobenthos in quick diagnose water quality.
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来源期刊
Applied Environmental Research
Applied Environmental Research Environmental Science-Environmental Science (all)
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