摘要
为了探讨巢湖东半湖蓝藻水华暴发时空分布规律及其成因,对2008—2009年巢湖东半湖蓝藻密度、叶绿素含量及相关水质指标进行研究。采用逐步剔除法和逐步回归法进行分析,获得巢湖东半湖蓝藻水华暴发时空分布图。结果表明,巢湖东半湖蓝藻暴发存在明显的时空分布差异,藻华形成(叶绿素a含量、蓝藻密度)与透明度、高锰酸钾指数、氨氮以及总氮显著相关,结合多元回归分析可知,影响水华暴发的环境因子有水温、pH、透明度和总氮。
To explore the tempo-spatial dynamics and cause of the cyanobacterial blooms in the east-half part of Lake Chaohu, the density of cyanobaeterial, chlorophyll a, water temperature, total nitrogen, total phosphorus and pH were measured during 2008--2009. Cyanobac- terial blooms generally appeared between June and August, and near the center(Zhongmiao) of the Lake. Cyanobacterial blooming(chloro- phyll a content and algal density) was significantly correlated with transparency index, permanganate index, ammonia nitrogen and total ni- trogen in water. Nitrogen in water was a critical factor leading to tocyanobacterial blooming. Suitable temperature facilitated this phe- nomenon.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2013年第10期2035-2041,共7页
Journal of Agro-Environment Science
基金
国家科技支撑计划项目(2012BAD14B13)
安徽省农业科学院科技创新团队项目(13C0203)
关键词
蓝藻暴发
时空分布
相关性分析
多元回归
巢湖
cyanobacterial bloom
spatial and temporal dynamic
correlation analysis
multiple regressions
Lake Chaohu
作者简介
吴珺(1987-),女,江苏昆山人,在读硕士,主要研究方向为环境评价与规划。E-mail:sleepjunl26@126.com。
通信作者:曹德菊E-mail:cdj@ahau.edu.cn