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长江中下游浅水湖泊中总氮及其形态的时空分布
引用本文:王东红,黄清辉,王春霞,马梅,王子健.长江中下游浅水湖泊中总氮及其形态的时空分布[J].环境科学,2004(Z1).
作者姓名:王东红  黄清辉  王春霞  马梅  王子健
作者单位:中国科学院生态环境研究中心环境水质学国家重点实验室
基金项目:中国科学院知识创新工程重大项目 (KZCX1 SW 12 Ⅱ 3 2 ),国家自然科学基金项目 ( 4 0 2 73 0 46)
摘    要:分析和比较了长江中下游 3个浅水湖泊———太湖、巢湖和龙感湖夏、秋和冬季沉积物和上覆水中的总氮及其氮形态 ,描述了氮及其各形态在 3个湖泊中的时空分布特征 .结果表明 :空间上 ,无论是在表层沉积物还是在上覆水中 ,太湖中总氮的含量均高于其他 2个湖泊 ,且在太湖和巢湖都呈现西高东低的分布特征 .氨氮在沉积物和上覆水及溶解态硝态氮在上覆水中的分布与总氮分布趋势基本相同 .巢湖沉积物中氨氮浓度所占的比例稍高于太湖和龙感湖 .在不同季节 ,表层沉积物和上覆水中的总氮含量冬季高于秋季和夏季 ,表层沉积物中氨氮浓度在秋季最高 .巢湖和龙感湖上覆水中的溶解态硝态氮在冬季浓度较高 ,而在太湖西北部这种季节差异几乎没有 ,氨氮的浓度季节性差异也不十分明显

关 键 词:总氮  氨氮  硝态氮  沉积物  上覆水

Temporal and Spatial Distribution of Total Nitrogen and Its Species in Shallow Eutrophic Lakes of China
WANG Dong-hong,HUANG Qing-hui,WANG Chun-xia,MA Mei,WANG Zi-jian.Temporal and Spatial Distribution of Total Nitrogen and Its Species in Shallow Eutrophic Lakes of China[J].Chinese Journal of Environmental Science,2004(Z1).
Authors:WANG Dong-hong  HUANG Qing-hui  WANG Chun-xia  MA Mei  WANG Zi-jian
Abstract:The temporal and spatial distribution of total nitrogen(Tot-N) and its species in sediments and overlying water of three shallow eutrophic lakes (Taihu Lake, Chaohu Lake and Longganhu Lake) in China were examined and analyzed. The spatial characteristic showed that higher concentration of Tot-N in sediments and overlying water were observed in Taihu Lake. The concentration of (Tot-N) was higher in the west side than that in the east side in Taihu Lake and Chaohu Lake. The spatial distribution trend of dissolved ammonium nitrogen (DAN) in sediments and overlying water and dissolved nitrate and nitrite(DNN) in overlying water were same as the distribution of Tot-N. The proportion of ammonium in sediment was higher in Chaohu Lake. The temporal difference showed that higher concentration of Tot-N in sediments and overlying water was occurred in winter, but higher concentration of ammonium in sediments was occurred in autumn. DNN in overlying water of Chaohu Lake and Longganhu Lake was higher in winter. However, temporal difference of DNN in the north-west of Taihu Lake and DAN were not significant.
Keywords:total nitrogen  dissolved ammonium nitrogen  dissolved nitrate and nitrite  sediment  overlying water
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