上海滨岸潮滩水沉积物中无机氮的季节性变化
收稿日期: 2001-09-10
修回日期: 2002-04-25
网络出版日期: 2002-07-25
基金资助
国家自然科学基金项目 (49901015,40131020和40173030)
Seasonal Variation of Inorganic Nitrogen in Water and Sediment of Intertidal Flats on the Shanghai Coast
Received date: 2001-09-10
Revised date: 2002-04-25
Online published: 2002-07-25
Supported by
National Natural Science Foundation of China, No. 49901015, 40131020 and 40173030
对长江口南翼上海滨岸带3个站点潮滩上覆水、沉积物和间隙水中的3态无机氮的含量分布的年度季节性监测研究表明：潮滩上覆水中溶解无机氮以NO3-N为主;表层沉积物中可交换态无机氮以NH4-N为主,约占70%~85%;沉积物间隙水中主要无机氮为NH4-N 和 NO3-N。潮滩水体中NH4-N的季节性变化幅度不大,而NO3-N和NO2-N的季节性变化明显,在冬季含量明显降低;但沉积物和间隙水中氨氮和硝态氮的浓度在冬季则有较大增加。初步探讨了潮滩水和沉积物中无机氮分布季节性变化的主要影响因素,估算了潮滩表层沉积物-水界面无机氮的扩散通量,指出NH4-N的扩散释放对滨岸水环境质量影响较大。
高效江,张念礼,陈振楼,许世远,陈立民 . 上海滨岸潮滩水沉积物中无机氮的季节性变化[J]. 地理学报, 2002 , 57(4) : 407 -412 . DOI: 10.11821/xb200204004
In 1998-1999, contents of inorganic nitrogen (NH4-N, NO3-N and NO2-N) in water and sediment of intertidal flats of the Shanghai coast were investigated at three stations (CY, DH and LY). Results show that the main form of inorganic nitrogen in water of intertidal flats is of NO3-N with a wide range (37.2~226.1 mol-1); most of exchangeable N in surface intertidal sediments is of NH4-N, accounting for 70%~85%; NH4-N and NO3-N are the main form of inorganic N in pore water of surface sediments. Content distributions of NH4-N, NO3-N and NO2-N in water and sediment of intertidal flats vary seasonally. The basic factors affecting the seasonal variation of inorganic N were discussed. Moreover, the diffusion fluxes of NH4-N, NO3-N and NO2-N between water and intertidal sediment interface were estimated, indicating that NH4-N in sediments may play an important role in the Yangtze estuarine and coastal environment.
Key words： inorganic nitrogen; distribution; water and sediment; intertidal flat
[1] Richardson K, Jgensen B B. Eutrophication in coastal marine ecosystem. Coastal and Estuarine Studies, 1996, 52: 1-19
[2] Lin Ronggen, Zou Jingzhong. Consequences and countermeasures of coastal eutrophication. Marine Environmental Science, 1997, 16(3): 71-75.
[林荣根,邹景忠. 近海富营养化的结果与对策. 海洋环境科学, 1997, 16(3):71-75.]
[3] Duan Shuiwang, Zhang Shen, Chen Xibao et al. Concentration of nitrogen and phosphorus and nutrient transport to estuary of the Yangtze River. Environmental Science, 2000, 21(1):53-56.
[段水旺, 章申, 陈喜保等. 长江下游氮磷含量变化及其输送量的估算. 环境科学, 2000, 21(1): 53-56.]
[4] Gu Hongkan, Xiong Xiaoxian, Liu Mingxing et al. Marine geochemistry of nitrogen near estuary of Yangtze River: I. nitrate in sea water near estuary. Journal of Shandong College of Oceanology, 1981, 11(4): 37-46.
[顾宏堪, 熊孝先, 刘明星 等. 长江口附近氮的地球化学 I. 长江口附近海水中的硝酸盐. 山东海洋学院学报. 1981,11(4): 37-46.]
[5] Wang Baodong. On the extension and nutrent transportation of the Changjiang River dilute water. Journal of Oceanography of Huanghai & Bohai Seas, 1998, 16(2): 41-48.
[王保. 长江冲淡水的扩展及其营养盐的输运. 黄渤海海洋, 1998, 16(2): 41-48.]
[6] National Bureau of Ocean. Criterion of Ocean Monitoring. Beijing: Ocean Press, 1989.
[国家海洋局. 海洋监测规范. 北京: 海洋出版社, 1989.]
[7] Herbert R A. Nitrogen cycling in coastal marine ecosystems. FEMS Microbiology Reviews, 1999, 23: 563-590.
[8] Bolalek J, Graca B. Ammonia nitrogen at the water-sediment interface in Puck Bay (Baltic). Estuarine, Coastal and Shelf Science, 1996, 43: 767-779.
[9] Barnes J, Owens N J P. Denitrification and nitrous oxide concentrations in the Humber estuary, UK, and adjacent coastal zones. Marine Chemistry, 1996, 65: 97-110.
[10] Jickells T D. Nutrient biogeochemistry of the coastal zone. Science, 1998, 281: 217-222.
[11] Williams J U, Mark W S. Dissolved nutrient fluxes from the nearshore sediments of Bowling Green Bay, Central Great Barrier Reef Lagoon (Australia). Estu. Coastal and Shelf Science, 1987, 24(3): 289-303.
[12] Jeff M, John W M. Ammonium release from resuspended sediments in the laguna Madre estuary. Marine Chemistry, 1999, 65: 97-110.
[13] Qiu Yaowen, Wang Zhaoding, Gao Honglian et al. Diffusive fluxes of nutrients across sediment-seawater interface in cultural sea area of Daya Bay. Tropical Oceanology, 1999, 18(3): 83-90.
[丘耀文, 王肇鼎, 高红莲 等. 大亚湾养殖水域沉积物-水界面营养盐扩散通量. 热带海洋, 1999, 18(3): 83-90.]
[14] Liu Sumei, Zhang Jing, Yu Zhigang et al. Benthic fluxes of dissolved inorganic nitrogen in the Laizhou Bay, Bohai Sea. Environmental Science, 1999, 20(2): 12-16.
[刘素美, 张经, 于志刚 等. 渤海莱州湾沉积物-水界面溶解无机氮的扩散通量. 环境科学, 1999, 20(2): 12-16.]
/
| 〈 |
|
〉 |