水资源保护2017，Vol.33Issue(4)：80-87,8.DOI:10.3880/j.issn.1004-6933.2017.04.013
北江大型底栖无脊椎动物群落结构及水质的生物评价
Benthic macroinvertebrate community structure and bioassessment of water quality of Beijiang River
摘要
Abstract
Water quality bioassessment was conducted based on the community structure of benthic macroinvertebrates investigated at 25 sampling sites in the Beijiang River.In this study, 46 genera of macroinvertebrates belonging to 31 families and 15 orders were identified, among which aquatic insects (30 genera), mollusks (eight genera), annelids (six genera), and crustaceans (two genera) accounted for 65.22%, 17.39%, 13.04%, and 4.35% of the total, respectively.Polypedilum, Barbronia, and Branchiura sowerbyi were the dominant species among all the benthic macroinvertebrates.The Shannon-Wiener index, Margalef index, Pielou index, biotic pollution index (BPI), biotic index (BI), family biotic index (FBI), and Goodnight-Whitley modified index (GBI) were used to comprehensively evaluate the water quality of the Beijiang River.The results show that the variety and the number of macroinvertebrates during the study period had changed remarkably compared with those in the 1980s.The biodiversity had decreased, the proportion of pollution-tolerant species had increased, and the water quality had deteriorated according to physical and chemical parameters.The evaluation results of the seven biological indices showed a certain difference.Some of the indices had significant correlations between each other.The BPI and FBI indices were more adaptable to the water quality bioassessment of the Beijiang River due to their accuracy and rationality.The water quality was at low or extremely low levels at six sites, at moderate levels at 16 sites, and at high levels at three sites, indicating that the water quality at all the 25 sites was at a moderate level on the whole.Human activities had some influence on the water quality of the river.The overall water quality of the Beijiang River showed a downward trend based on water quality bioassessment.关键词
大型底栖无脊椎动物/群落结构特征/生物评价/水质/北江Key words
benthic macroinvertebrates/community structure features/biological assessment/water quality/Beijiang River分类
资源环境引用本文复制引用
曹然,黎征武,毛建忠,盛萧,王旭涛,邓培雁..北江大型底栖无脊椎动物群落结构及水质的生物评价[J].水资源保护,2017,33(4):80-87,8.基金项目
广东省水利科技创新项目(2014-16) （2014-16）
