OALib Journal期刊
ISSN: 2333-9721
费用：99美元

投递稿件

查看量	下载量

相关文章
更多...

湖泊科学 2009

湖泊表层沉积物可溶性有机氮含量及分布特性

DOI: 10.18307/2009.0503

林素梅,王圣瑞,金相灿,何星存

Keywords: 湖泊表层沉积物,可溶性有机氮,含量,游离氨基酸,鄱阳湖,洞庭湖

Full-Text Cite this paper Add to My Lib

Abstract:

选择鄱阳湖、洞庭湖等6个湖泊的15个表层沉积物样品,用1mol/LKCl溶液提取沉积物中的可溶性有机氮(SON),并研究了SON的含量、分布状况及特性.结果表明,所研究的沉积物SON含量变异较大,在17.18-292.31mg/kg之间波动,平均为134.45mg/kg,占可溶性总氮(TSN)的51.86%,沉积物总氮的7.14%.污染程度重的沉积物中SON含量均较污染程度轻的高,且SON含量与TN、TSN含量呈正相关,即与沉积物氮污染程度呈正相关.分布状况则与湖泊污染程度、人类活动干扰强度等紧密相关.所研究表层湖泊沉积物中游离氨基酸(FAA)含量处于4.69-42.04mg/kg间,平均为23.27mg/kg,占SON的18.80%,TN的1.24%.FAA与SON含量呈显著正相关,在沉积物中的平均含量及在SON中的比例均较土壤中高,说明湖泊沉积物SON有较大的易分解组分.SON与沉积物可溶性无机氮、有机质、CEC等显著相关.因此,SON是湖泊沉积物氮的重要组成部分,对湖泊富营养化具有重要的影响,特别是对污染严重的沉积物而言,更应重视其SON在湖泊氮循环及富营养化中的作用.

References

[1]	Jones DL, Shannon D, Murphy DV. Role of dissolved organic nitrogen (DON) in soil N cycling in grassland soils. Soil Biology& Biochemistry, 2004, 36: 749-756.
[2]	Jones DL, Shannon D, Fortune TJ. Plant capture of free amino acids is maximized under high soil amino acid concentrations.Soil Biology & Biochemistry, 2005, 37: 179-181.
[3]	Zehr JP, Paulsen SG, Axler RP. Dynamics of dissolved organic nitrogen in subalpine Castle Lake, California. Hydrobiologia,1988, 157: 33-45.
[4]	Li W, Wu FC, Liu CQ et al. Temporal and spatial distributions of dissolved organic carbon and nitrogen in two small lakes onthe Southwestern China Plateau. Limnology, 2008, 9: 163-171.
[5]	杨绒, 严德翼, 周建斌等. 黄土区不同类型土壤可溶性有机氮的含量及特性. 生态学报, 2007, 27(4): 1397-1403.
[6]	牟德海, 黄长江, 张春粦等. 大亚湾沉积物中氨基酸的垂直分布—沉积物柱样 W 0 中的游离氨基酸. 分析测试学报,2002, 21(2): 4-7.
[7]	刘妍, 张建明, 陈政等. 洞庭湖水质污染现状及影响因素分析. 内陆水产, 2007, (8): 34-35.
[8]	金宏, 向建国, 唐文熙. 大通湖渔场浮游生物及其鱼产力的调查. 内陆水产, 2005, (7): 22-35.
[9]	简永兴, 王建波, 何国庆等. 洞庭湖区三个湖泊水生植物多样性的比较研究. 水生生物学报, 2006, 30(2): 160-167.
[10]	鲍士旦. 土壤农化分析(第三版). 北京: 中国农业出版社, 2000.
[11]	McCarthy M, Pratum T, Hedges J. Chemical composition of dissolved organic nitrogen in the ocean. Nature, 1997, 390:150-154.
[12]	葛大兵, 吴小玲, 周慧等. 岳阳南湖浮游植物与富营养化特征分析. 水资源保护, 2005, 21(2): 46-49.
[13]	Chen CG, Xu ZH. On the nature and ecological functions of soil soluble organic nitrogen (SON) in forest ecosystems. J Soils &Sediments, 2006, 6(2): 63-66.
[14]	吴怡, 邓天龙, 廖梦霞. 天然水体沉积物中有机氮的研究进展. 广东微量元素科学, 2006, 13(11): 7-13.
[15]	Murphy DV, Macdonald AJ, Stockdale EA et al. Soluble organic nitrogen in agricultural soils. Soils and Fertility of Soils, 2000,30: 374-387.
[16]	Jones DL, Willett VB. Experimental evaluation of methods to quantify dissolved organic nitrogen (DON) and dissolved organiccarbon (DOC) in soil. Soil Biology & Biochemistry, 2006, 38: 991-999.
[17]	邵孝候, Houba VJG, 胡霭堂等. 土壤可溶性有机态氮的释放动力学研究. 南京农业大学学报(自然科学版), 1990, 13(3):65-69.
[18]	陈文煊, 王志红. 不同形态氮对富营养化水源藻华暴发的潜在影响. 给水排水, 2008, 134(9): 22-27.
[19]	Perakis SS, Hedin LO. Nitrogen loss from unpolluted South American forests mainly via dissolved organic compounds. Nature,2002, 415: 416-419.
[20]	刘艳, 周国逸, 刘菊秀. 陆地生态系统可溶性有机氮研究进展. 生态学杂志, 2005, 24(5): 573-577.
[21]	王毛兰, 胡春华, 周文斌. 丰水期鄱阳湖氮磷含量变化及来源分析. 长江流域资源与环境, 2008, 17(1): 138-142.
[22]	王苏民, 窦鸿身. 中国湖泊志. 北京: 科学出版社, 1998: 225.
[23]	谈毅奇, 杨品红, 桑明强等. 湖南东湖生态系统的能量结构与转换效率. 水利渔业, 2000, 20(6): 6-8.
[24]	Ruban V, Brigault S, Demare D. An investigation of the origin and mobility of phosphorus in freshwater sediments fromBort-Les-Orgues Reservoir, France. J Environ Monit, 1999, 1: 403-407.
[25]	更多...
[26]	中国科学院南京土壤所. 土壤理化分析. 上海: 上海科技出版社, 1978: 73-92.
[27]	国家环境保护总局《水和废水监测分析方法》编委会. 水和废水监测分析方法. 北京: 中国环境科学出版社, 2002.
[28]	张雷, 郑丙辉, 田自强. 西太湖典型河口区湖滨带表层沉积物营养评价. 环境科学与技术, 2006, 29(5): 4-6.
[29]	Zhong ZK, Franz M. Soluble organic nitrogen in temperate forest soils. Soil Biology & Biochemistry, 2003, 35: 333-338.
[30]	Song LC, Hao JM, Cui XY. Soluble organic nitrogen in forest soils of northeast China. Journal of Forestry Research, 2008,19(1): 53-57.
[31]	Glibert PM. Harmful algal blooms in the Chesapeake and coastal bays of Maryland, USA: Comparison of 1997, 1998, and 1999events. Estuaries, 2001, 24: 875-883.
[32]	Tonis P, Serge YM. The role of inorganic and organic nutrients on the development of phytoplankton along a transect from theDaugava River mouth to the Open Baltic, in spring and summer. ICES Journal of Marine Science, 2003, 60: 827-835.
[33]	Yu Z, Zhang Q, Kraus TEC et al. Contribution of amino compounds to dissolved organic nitrogen in forest soils.Biogeochemistry, 2002, 61: 173-198.
[34]	Lipson D, N？sholm T. The unexpected versatility of plants: organic nitrogen use and availability in terrestrial ecosystems.Oecologia, 2001, 128: 305-316.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133