溶洞硅藻群落特征及其与水质相关性分析  

Study on Diatom Communities and Correlation Analysis between Diatom Communities and Water Quality of Karst Cave Groundwater

作　　者：孙丹[1] 支崇远[1,2] 

机构地区：[1]贵州师范大学生命科学学院 [2]贵州大学贵州省山地环境信息系统与生态环境保护重点实验室,贵州贵阳550001

出　　处：《环境科学与技术》2015年第12期36-40,共5页Environmental Science & Technology

基　　金：国家自然科学基金(41062005);贵州省环保厅项目(黔环科[2012]1号);贵州省国际科技合作重点项目[(2012)800107]

摘　　要：溶洞地下水水质和硅藻分布有较密切关系并有季节变化特征,研究溶洞硅藻种类组成对发展硅藻生物多样性和溶洞水质变化有一定价值。于2013年9月-2014年12月对毕节市七星关区层台镇玉龙村一溶洞地下水实地测定和采集样品,分析了硅藻的种类组成、个体密度、优势种及群落结构的季节变化特征。经鉴定共发现硅藻18属174种,主要的优势属有曲壳藻属(Achnanthes)、桥弯藻属(Cymbella)、脆杆藻属(Fragilaria)、舟形藻属(Navicula)等。并讨论了硅藻与水温、硝氮、电导率等理化因子之间的关系。相关性分析表明,硅藻与水温及水体中二氧化硅、总氮、氨氮、电导率有显著相关性。The quality and diatom distribution of cave groundwater have a close relationship and seasonal variation characteristics,the research of the diatom species composition in cave has a certain value on the development of diatom biodiversity and the quality of groundwater in cave. The groundwater was measured and samples of the groundwater were collected in a cave located at Yulong Village,Chentai Town,Bije City from September 2013 to December 2014,to analyze the diatom species composition,individual density,dominant species and seasonal variation characteristics of community structure. Totally 18 genera and 174 diatom species were identified, with the dominant genus including Achnanthes,Cymbella, Fragilaria, Navicula. The relationship between the environment variables in temperature, nitrate nitrogen,conductivity and the dominant diatom genus were discussed,and correlation analysis showed that diatom had prominent correction with the temperature,silicon dioxide,ammonia nitrogen and conductivity in water.

关 键 词：硅藻 相关分析 溶洞 季节变化 

分 类 号：X171.5[环境科学与工程—环境科学]