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现代地质 ›› 2009, Vol. 23 ›› Issue (1): 82-85.

• 水环境与水处理 • 上一篇    下一篇

内蒙古乌梁素海底泥总氮空间分布特征

赵锁志1,2,孔凡吉2,赵军2,王喜宽1,2,李世宝2,张青2   

  1. 1中国地质大学 水资源与环境学院,北京100083;2内蒙古自治区地质调查院,内蒙古 呼和浩特010020
  • 收稿日期:2008-04-05 修回日期:2008-12-01 出版日期:2009-02-20 发布日期:2011-12-21
  • 作者简介:赵锁志,男,高级工程师,博士研究生,1964年出生,水文地质与环境地质专业,主要从事水文地球化学研究。 Email:zhaosz1964@sohu.com。
  • 基金资助:

    中国地质调查局国土资源大调查省部合作项目“内蒙古河套农业经济区生态地球化学调查项目”(200414200005)

Distribution Characteristics of TN in Sediment of the Wuliangsu Lake, Inner Mongolia

ZHAO Suo-zhi 1,2,KONG Fan-ji2,ZHAO Jun2,WANG Xi-kuan 1,2,LI Shi-bao2,ZHANG Qing2   

  1. 1School of Water Resources and Environment, China University of Geosciences,Beijing100083,China; 2Institute of Geological Survey of Inner Mongolia Autonomous Region,Hohhot,Inner Mongolia010020,China
  • Received:2008-04-05 Revised:2008-12-01 Online:2009-02-20 Published:2011-12-21

摘要:

        湖泊底泥作为湖泊湿地生态系统中氮素的主要源与汇,对氮素的生物地球化学循环具有重要意义。针对乌梁素海富营养化日趋严重和湿地面积逐渐萎缩的现象,研究了底泥总氮的分布规律及其地球化学特征。结果表明,底泥中总氮含量在水平方向上总体表现为西高东低的径向分异特征;其在乌梁素海沉积剖面上具有随深度增加含量递减的规律。乌梁素海底泥氮污染主要由人类活动引起;20世纪90年代,乌梁素海富营养化进程开始加速。通过研究湖泊底泥中氮素的分布规律及其地球化学特征,为乌梁素海富营养化的治理提供科学依据。

关键词: 总氮, 底泥, 分布特征, 乌梁素海, 内蒙古

Abstract:

     As a main source and sink of nitrogen from lake wetland ecosystem,lake sediment has an important significance for biogeochemical cycle of nitrogen.In recent years,the Wuliangsu lake area is shrinking and europhication becomes more and more serious.Aiming to the above problems,spatial distribution law of total nitrogen(TN) content and its geochemical characteristics in sediment are studied in this paper.TN content in the west of the Wuliangsu lake is higher than that of the east area;TN content decrease with depth in sediment profile of the Wuliangsu lake. N pollution in sediments of the Wuliangsu lake is caused by human activity; Eutrophication of the Wuliangsu lake started in 1990s.Studying the distribution law of nitrogen in lake sediment and its geochemical characteristics can provide scientific basis for the eutrophication control of the Wuliangsu lake.

Key words: TN, bed mud, distribution characteristic, Wuliangsu lake, Inner Mongolia

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