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| Occurrence characteristics and release potential of nitrogen fractions in sediment of Lihu Lake |
| WANG Wen-wen1,2, WANG Shu-hang2, JIANG Xia2, ZHENG Bing-hui2, ZHAO Li2, CHEN Jun-yi2 |
1. College of Water Sciences, Beijing Normal University, Beijing 100875, China;
2. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China |
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Abstract To reveal the impacts of sediment nitrogen on overlying water of Lihu Lake, the spatial distribution characteristics of nitrogen species were studied by sequential extraction method, the impacts of potential bioavailable nitrogen on nitrogen release from sediment were identified by Fick's first diffusion law and correlation analysis. And the potential for mineralization of organic nitrogen and its main source were assessed by mineralization experiment in laboratory at the same time. Results showed that the mean value of w(TN) was 1417.97mg/kg, w(TN) in the east lake was significantly higher than the west. HN (hydrolysable nitrogen) was the main form for TN, and w(HTN) accouted for 66.5% of w(TN). Emission flux of NH4+-N ranged from 1.93 to 20.88mg/(m2·d), and was manly affected by F-NH4+-N (free ammonia nitrogen) and E-NH4+-N (exchangeable ammonia nitrogen). The average nitrogen mineralization potential was 248.55mg/kg. F-ON (free organic nitrogen) and AAN (amino acid nitrogen) are the biggest contributors to mineralization of organic nitrogen, and they can directly influence the capacity of sediment nitrogen release into overlying water.
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Received: 28 May 2016
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| [1] |
周伟华,吴云华,陈绍勇.南沙群岛海域表层沉积物中有机物、铁和锰的分布特征[J]. 热带海洋学报, 2003,22(1):43-49.
|
| [2] |
李俐俐,武安泉,覃雪波.沙蚕生物扰动对河口沉积物中菲释放的影响[J]. 环境科学学报, 2014,(9):2355-2361.
|
| [3] |
Chen M S, Ding S M, Liu L, et al. Kinetics of phosphorus release from sediments and its relationship with iron speciation influenced by the mussel (Corbicula fluminea) bioturbation[J]. Science of The Total Environment, 2016,542,Part A:833-840.
|
| [4] |
金相灿,屠清瑛.湖泊富营养化调查规范(第二版)[M]. 北京:中国科学出版社, 1990.
|
| [5] |
王书航,姜霞,钟立香,等.巢湖沉积物不同形态氮季节性赋存特征[J]. 环境科学, 2010,31(4):946-953.
|
| [6] |
王雯雯,王书航,姜霞,等.洞庭湖沉积物不同形态氮赋存特征及其释放风险[J]. 环境科学研究, 2013,26(6):598-605.
|
| [7] |
Wang P D, Zhao L, Wang C, et al. Nitrogen distribution and potential mobility in sediments of three typical shallow urban lakes in China[J]. Environmental Engineering Science, 2009, 26(10):1511-1521.
|
| [8] |
胡佳晨,姜霞,李永峰,等.环境治理工程对蠡湖水体中氮空间分布的影响[J]. 环境科学研究, 2013,26(4):380-388.
|
| [9] |
欧阳媛,王圣瑞,金相灿,等.外加氮源对滇池沉积物氮矿化影响的研究[J]. 中国环境科学, 2009,29(8):879-884.
|
| [10] |
国家环境保护总局.水和废水监测分析方法(第四版)[M]. 北京:中国环境科学出版社, 2009.
|
| [11] |
吴丰昌,万国江,蔡玉蓉,等.沉积物-水界面的生物地球化学作用[J]. 地球科学进展, 1996,11(2):191-197.
|
| [12] |
Bremner J M. Organic forms of soil nitrogen[C]//Bremner J M, Black C A (cds). Methods of Soil Analysis. USA:Madison, American Society of Agronomy, 1965:1148-1178.
|
| [13] |
Stevenson F J. Organic forms of soil nitrogen[M]. Humus Chemistry, Wiley, New York, 1997:55-119.
|
| [14] |
姜霞,王书航.沉积物质量调查评估手册[M]. 北京:科学出版社, 2012.
|
| [15] |
Bolalek J, Graca B. Ammonium nitrogen at the water-sediment interface in Puck Bay (Baltic Sea)[J]. Estuarine Coastal and Shelf Science, 1996,43:767-779.
|
| [16] |
Billen G. A budget of nitrogen recycling in North Sea sediments off the Belgian coast[J]. Estuarine Coastal and Shelf Science, 1978,7:127-146.
|
| [17] |
钟立香,王书航,姜霞,等.连续分级提取法研究春季巢湖沉积物中不同结合态氮的赋存特征[J]. 农业环境科学学报, 2009,28(10):2132-2137.
|
| [18] |
Delange G J. Distribution of exchangeable, fixed, organic and total nitrogen in interbedded turbiditic pelagic sediments of the Madeira abyssal-plain, eastern north-Atlantic[J]. Marine Geology, 1992,109(1/2):95-114.
|
| [19] |
王圣瑞,焦立新,金相灿,等.长江中下游浅水湖泊沉积物总氮、可交换态氮与固定态铵的赋存特征[J]. 环境科学学报, 2008,28(1):37-43.
|
| [20] |
Depinto J V, Schmidt M, Paul J F. Transport and transformation of contaminants near the sediment-water interface[M]. New York:Lewis Publisher, 1993.
|
| [21] |
陈国元,李建秋,李清曼,等.武汉月湖沉积物不同形态氮含量与转换途径的垂直变化[J]. 湖泊科学, 2008,20(4):463-469.
|
| [22] |
Stevenson F J. Humus chemistry:Genesis, composition, reactions[M]. New York:John Wiley & Sons, 1994:55-119.
|
| [23] |
Schulten H R. The three-dimensional structure of humic substances and soil organic matter studied by computational analytical chemistry[J]. Fresenius Journal of Analytical Chemistry, 1995,351(1):62-73.
|
| [24] |
Sowden F J, Chen Y, Schnitzer M. The nitrogen distribution in soils formed under widely differing climatic conditions[J]. Geochim Cosmochim Acta, 1997,41:1524-1526.
|
| [25] |
Sulce S, Palma L D, Jaquin F,et al. Study of immobilization and remobilization of nitrogen fertilizer in cultivated soils by hydrolytic fractionation[J]. European Journal of Soil Science, 1996,47:249-255.
|
| [26] |
Qiu H M, Geng J J, Ren H Q, et al. Phosphite flux at the sediment-water interface in northern Lake Taihu[J]. Science of the Total Environment, 2016,543, Part A:67-74.
|
| [27] |
Kalkhoff S J, Hubbard L E, Tomer M D, et al. Effect of variable annual precipitation and nutrient input on nitrogen and phosphorus transport from two Midwestern agricultural watersheds[J]. Science of the Total Environment, 2016,559:53-62.
|
| [28] |
Mayer T, Ptacek C, Zanini L. Sediments as a source of nutrients to hypereutrophic marshes of Point Pelee, Ontario, Canada[J]. Water Research, 1999,33(6):1460-1470.
|
| [29] |
Li Q M, Zhang W, Wang X X, et al. Phosphorus in Interstitial Water Induced by Redox Potential in Sediment of Dianchi Lake, China[J]. Pedosphere, 2007,17(6):739-746.
|
| [30] |
Geurts J J M, Smolders A J P, Banach A M, et al. The interaction between decomposition, net N and P mineralization and their mobilization to the surface water in fens[J]. Water Research, 2010,44(11):3487-3495.
|
| [31] |
Stanford G, Smith S L. Nitrogen mineralization potentials of soils[J]. Soil Science Society of America Journal, 1972,36:465-470.
|
| [32] |
付会芳,张兴昌.旱地土壤氮素矿化的动力学研究[J]. 干旱区资源与环境, 1997,11(1):53-58.
|
|
|
|
