虎杖对水质和微生物群落结构及功能的影响  

Effects of Polygonum cuspidatum on Water Quality, Structure and Function of Microbial Community

作　　者：陈家长[1,2] 赵志祥[2] 施羽露 史磊磊[2] 郑尧[1,2] 邴旭文[1,2] CHEN Jiazhang;ZHAO Zhixiang;SHI Yulu;SHI Leilei;ZHENG Yao;BING Xuwen(Laboratory of Quality&Safety Risk Assessment for Aquatic Products on Environmental Factors(Wuxi),Ministry of Agriculture,Fishery Eco-environment Monitoring Center of Lower Reaches of Yangtze River,Ministry of Agriculture,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Wuxi 214081,China;Wuxi Fishery College,Nanjing Agricultural University,Wuxi 214081,China)

机构地区：[1]中国水产科学研究院淡水渔业研究中心,农业部长江下游渔业生态环境监测中心,农业部水产品质量安全环境因子风险评估实验室(无锡),江苏无锡214081 [2]南京农业大学无锡渔业学院,江苏无锡214081

出　　处：《环境科学与技术》2020年第5期25-32,共8页Environmental Science & Technology

基　　金：国家科技支撑计划(2015BAD13B03);国家特色淡水鱼产业技术体系(CARS-46)。

摘　　要：为研究虎杖种植后池塘水质变化和水体微生物群落碳源利用能力,该研究于室外构建了吉富罗非鱼养殖池塘5%虎杖生态浮床,2017年6-9月持续测定水质,利用Biolog技术分析池塘水体微生物群落结构及功能特征。结果表明6-7月生长期间虎杖种植能有效削减池塘水体中TN、TP、Chl.a浓度,在温度较高的8、9月虎杖种植塘TP显著降低(P<0.05);7-9月虎杖种植塘水体微生物AWCD值显著增加(P<0.05),多样性McIntosh和Richness(除9月)指数均显著提高(P<0.05),且水体微生物对聚合糖类、氨基酸类、醇类的代谢能力显著提高(P<0.05)。在吉富罗非鱼养殖池塘种植虎杖,可在改善水质的基础上提高水体微生物群落多样性指数及对碳源的利用能力。To find the effects of Polygonum cuspidatum on water quality, and the carbon source utilization characteristic of microbial community, this study constructed the ecological floating bed of Polygonum cuspidatum(5% for planting area ratio)in the pond of genetically improved tilapia outside, and assessed the water quality from June to September, 2017. The structure and function of microbial community in water samples of tilapia ponds was analyzed by Biolog technology. The results showed that P. cuspidatum from June to July(during growing period) could effectively reduce the content of TN, TP, Chl.a in water samples of tilapia ponds(P<0.05), but the removal rate of TP in the water sample is not as good as those from August to September(higher temperature period, P<0.05). P. cuspidatum significantly increased AWCD values, McIntosh and Richness(except for September) indexes from July to September(P<0.05) in pond water samples, and which also improved the utilization rate of carbohydrates, amino acids, alcohols by water microbes. P. cuspidatum enhanced carbon source utilization abilities, increased diversity indexes of microbial community in water samples of aquaculture tilapia ponds, which was based on the improvement for water quality of the samples.

关 键 词：罗非鱼 虎杖浮床 微生物群落 多样性 碳源利用 

分 类 号：X52[环境科学与工程—环境工程]