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引用本文:周贝贝,王国祥,徐瑶,杨飞,宋康,夏明芳.南京秦淮河叶绿素a空间分布及其与环境因子的关系.湖泊科学,2012,24(2):267-272. DOI:10.18307/2012.0215
ZHOU Beibei,WANG Guoxiang,XU Yao,YANG Fei,SONG Kang,XIA Mingfang.Spatial distribution of chlorophyll-a and its relationships with environmental factors in Qinhuai River, Nanjing. J. Lake Sci.2012,24(2):267-272. DOI:10.18307/2012.0215
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南京秦淮河叶绿素a空间分布及其与环境因子的关系
周贝贝1, 王国祥1, 徐瑶1, 杨飞1, 宋康1, 夏明芳2
1.南京师范大学地理科学学院, 江苏省环境演变及生态建设重点实验室, 南京 210046;2.江苏省太湖水污染防治办公室, 南京 210024
摘要:
近年来,流动的河流开始陆续暴发藻类水华,河流的水华现象是继湖泊水华现象之后又一倍受关注的科学问题.秦淮河水体污染严重并于2010年8月和9月间暴发水华.采用2010年8月15日和9月8日的秦淮河野外调查数据,对秦淮河水体叶绿素a的空间分布特征及其与环境因子的相关关系进行研究.结果表明,从上游到下游,秦淮河水体叶绿素a含量的分布表现出一定的空间差异性,平均值为73.7μg/L,其中马木桥样点的叶绿素a含量最高(184.52μg/L);秦淮河水体氮磷比为26.86,水体叶绿素a浓度的对数与TP的对数呈正相关,与氮磷比的对数呈负相关,表明磷可能是秦淮河蓝藻生长的主要影响因子;河流水体叶绿素a浓度与pH和DO呈极显著正相关,与NO2--N呈显著相关,而与NH4+-N、NO3--N和TN无显著相关.
关键词:  秦淮河  叶绿素a  环境因子  相关分析
DOI:10.18307/2012.0215
分类号:
基金项目:国家水体污染控制与治理科技重大专项项目(2009ZX07101-013-02);江苏省太湖治理科研课题项目(TH2010303)联合资助
Spatial distribution of chlorophyll-a and its relationships with environmental factors in Qinhuai River, Nanjing
ZHOU Beibei1, WANG Guoxiang1, XU Yao1, YANG Fei1, SONG Kang1, XIA Mingfang2
1.Jiangsu Key Laboratory of Environmental Change and Ecological Construction, College of Geographical Science, Nanjing Normal University, Nanjing 210046, P. R. China;2.General Office of Lake Taihu Water Pollution Prevention and Control, Nanjing 210024, P. R. China
Abstract:
In recent years, algae bloom is common in the flowing waters, which has been one of the top scientific problems after the algae bloom in lakes. Due to the water pollution, phytoplankton blooms arose in Qinhuai River between August and September, 2010. Based on the conventional monitoring data in August 15 and September 8, 2010, this paper studied the spatial distribution characteristic of chlorophyll-a and its relationships with environmental factors. Results showed that chlorophyll-a concentration appeared obvious spatial difference from upstream to downstream, with a mean value of 73.7 μg/L and the maximum value occurred in Mamuqiao(184.52 μg/L). The ratio of TN/TP was 26.86, and the logarithmic correlation between chlorophyll-a and TP was positive, but the logarithmic correlation between chlorophyll-a and the TN/TP ratio was negative. It suggested that phosphorous might be the main impact factor for blue-green algae. Significantly positive correlation was found between chlorophyll-a and pH and DO, and significantly positive correlation was found between chlorophyll-a and NO2--N, but no significant correlation between chlorophyll-a and NH4+-N, NO3--N and TN.
Key words:  Qinhuai River  chlorophyll-a  environmental factors  correlation analysis
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