厦门两水库冬季水体氮的空间分布及相关环境因子  

Spatial distributions of water body nitrogen and their relations with environmental factors in two reservoirs in Xiamen during winter

作　　者：汪剑[1] 郭沛涌[1] 钟燕华[1] 邱有信[1] 赵晓艳[1] 

机构地区：[1]华侨大学化工学院环境科学与工程系,福建厦门361021

出　　处：《生态学杂志》2011年第8期1751-1756,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金项目(20777021);教育部科学技术研究重点项目(210253);福建省自然科学基金项目(D0610012和2010J01043)资助

摘　　要：探讨了厦门市湖边、石兜-坂头两座水库冬季水体氮的空间分布特征,并分析了各形态氮与环境因子间的相关性,揭示了水库水体中氮形态的迁移转化,为水库水污染防治提供科学依据。研究表明:湖边水库水体TN的平均含量为1.36mg·L-1,石兜-坂头水库的石兜、坂头库区水体TN的平均含量分别为1.44、1.45mg·L-1。湖边水库潜在污染为外源污染,但石兜-坂头水库潜在污染为内源污染。湖边水库和石兜-坂头水库水体氮形态都以无机氮为主,占TN的比例分别为61.7%和58.0%。湖边水库主要无机氮为NO3-,石兜-坂头水库主要无机氮是NH4+。湖边水库NH4+与NO3-存在显著正相关性,NH4+与DO存在负相关性;石兜-坂头水库坂头库区NH4+与透明度存在正相关性,与pH存在负相关性。This paper probed into the spatial distribution patterns of nitrogen（N） in the water bodies of Hubian and Shidou-Bantou reservoirs in Xiamen during winter,and analyzed the relationships of the N forms in the water bodies with environmental factors,aimed to provide scientific bases for the prevention and treatment of the water pollution of the reservoirs.The average concentrations of total N in the water bodies of Hubian reservoir and of the Shidou and Bantou sections of Shidou-Bantou reservoir were 1.36,1.44,and 1.45 mg·L-1,respectively,with the pollution source being exogenous for the Hubian reservoir whereas endogenous for the ShidouBantou reservoir.Inorganic N was the major N form in the two reservoirs,accounting for 61.7% and 58.0% of the total N in Hubian and Shidou-Bantou reservoirs,respectively.The inorganic N in Hubian reservoir was mainly NO3--N,and that in Shidou-Bantou reservoir was mainly NH4＋-N.In Hubian reservoir,the NH4＋-N was positively correlated with NO3--N but negatively correlated with DO;and in the Bantou section of Shidou-Bantou reservoir,the NH4＋-N was positively correlated with transparency but negatively correlated with pH.

关 键 词：水库 氮形态 空间分布 相关性 环境因子 

分 类 号：X524[环境科学与工程—环境工程]