升金湖叶绿素a浓度的时空变化特征  

Seasonal and spatial variation of chlorophyll-a concentration in Shengjin Lake

作　　者：王兰[1] 王超[1] 赵秀侠[2] 周忠泽[1] 

机构地区：[1]安徽大学资源与环境工程学院生物多样性与湿地生态研究所安徽省生物物种资源信息中心,合肥230601 [2]安徽省农业科学院水产研究所,合肥230031

出　　处：《生物学杂志》2016年第1期49-52,共4页Journal of Biology

基　　金：国家自然科学基金(41072251);国家科技支撑计划(2012BAC10B02);中国高等教育博士点基金(20123401110005)

摘　　要：根据2013年1月、4月、8月和11月的监测数据,对升金湖叶绿素a浓度的时空分布特征及其与主要的环境因子的关系进行研究。结果表明,升金湖水体中叶绿素a分布具有明显的时间异质性,其季节变化范围为0.28~30.39μg/L,平均值为（6.83±5.60）μg/L,最小值出现在冬季,最大值出现在秋季。叶绿素a浓度在冬、春季较低,夏、秋季较高。在空间分布上,叶绿素a浓度具有明显的空间异质性,即在下湖区最高,其次是中湖区,上湖区最低。Pearson相关性分析和PCA分析表明,升金湖叶绿素a浓度与水温、溶解氧及浊度均呈极显著相关,与总磷也具有一定的相关性。Seasonal and spatial variation of chlorophyll-a concentration and its relationships with the main environmental factors in Shengjin Lake in January,April,August and November of 2013 were investigated. Results showed that the obvious seasonal variations were observed in chlorophyll-a concentration in Shengjin Lake. The concentration of chlorophyll-a ranged from 0. 28 μg / L to 30. 39μg /L with an average value of（ 6. 83 ± 5. 60） μg /L. The minimum and maximum of chlorophyll-a concentrations were recorded in winter and autumn,respectively. The chlorophyll-a concentrations were relatively lower in winter and spring while much higher in summer and autumn. It also was found to have significant spatial heterogenity in chlorophyll-a concentration. The chlorophyll-a concentrations were the highest in the lower lake of the Shengjin Lake,followed by the middle and the upper lake. Pearson correlation analyses and Principal component analysis（ PCA） revealed that the chlorophyll-a concentration in Shengjin Lake showed a significant correlation with water temperature,dissolved oxygen,and turbidity,while correlated with total phosphorus.

关 键 词：升金湖 叶绿素A 环境因子 时空变化 

分 类 号：Q948.8[生物学—植物学]