休伦湖Saginaw湾沉积物反硝化率的测定及其时空特征

被引：16

作者：

杨龙元

WayneS.Gardner

机构：

[1] 中国科学院南京地理与湖泊研究所!南京

[2] NOAA/GreatLakesEnvironmentalLaboratory

[3] AnnArbor

[4] Michigan

[5] USA!UniversityofTexasatAustin，MarineScienceInstitute，ChannelviewDrive

[6] PortAransas

[7] Texas，USA

来源：

湖泊科学 | 1998年 / 03期

关键词：

反硝化率; 沉积物; 休伦湖; N2生成法;

D O I：

暂无

中图分类号：

P342 [水文化学];

学科分类号：

081501 ;

摘要：

用N2生成法测定了北美休伦湖Saginaw湾1995年夏季7、8月份沉积物反硝化率，Saginaw湾内湾的沉积物反硝化率为16．0－39．6μmolN2／（m2·h），外湾沉积反硝化率为22．7　－26．1μmolN2／（m2·h），比较了不同湖泊沉积物反硝化率数值大小，指出休伦湖Saginaw湾水体现阶段的营养状况为贫－中营养水平．内外湾沉积物反硝化率数值波动大小与Saginaw河及休伦湖的影响有关；N2：TIN通量比值有不随采样时间的变化而变更等特性．在反硝化率测定过程中，反硝化率与O2消耗率之间有明显的正相关关系；沉积物上覆水中NH+4与NO-3之间通量值在变化趋势上有明显的负相关关系。

引用

页码：32 / 38

页数：7

共 6 条

[1]

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[2]

Denitrification and photcsynthesis in stream sediment studied with microsensor and wholecore techniques. Nielsen L P,et al. Limnology and Oceanography . 1990

[3]

Microzonation of denitrification activity in stream sediments as studied with a combined oxygen and nitrous oxide microsensor. Christensen P B. et al. Applied and Environmental Microbiology . 1989

[4]

A model for total phosphorus in Saginaw Bay, Lake Huron. Canale R P and J Squire. Journal of Great Lakes Research . 1976

[5]

Rates of denitrification of undisturbed sedirnent from six lakes as a function of nitrate concentration, oxygen and temperature. Andersen J M. Archiv fur Hydrobiologie . 1977

[6]

Nitrogen mineralization and denitrification in Lake Michigan sediments. Gardner W S,et al. Limnology and Oceanography . 1987

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