北民湖沉积物氮、磷形态竖向分布研究  

Study about Vertical Distribution of Nitrogen and Phosphorus Species in the Sediments of Beimin Lake

作　　者：李必才 曾淳[2] 董萌 宋娟娟 何连生[3] 孟睿[3] 

机构地区：[1]湖南城市学院材料与化学工程学院,湖南益阳413000 [2]湘潭大学,湖南湘潭411105 [3]中国环境科学研究院,北京100012

出　　处：《湖南城市学院学报（自然科学版）》2017年第2期71-75,共5页Journal of Hunan City University:Natural Science

基　　金：国家重大科技专项基金资助项目(2014ZX07504003)

摘　　要：为了解养殖类湖区不同深度沉积物中氮、磷形态的分布状况,选取典型养殖湖区北民湖为研究对象,运用柱状取样法将沉积物进行分层,探讨不同深度沉积物中氮、磷形态的分布特征.结果显示:北民湖沉积物中有机氮为主要氮形态,约占TN的94.53%,无机磷为主要磷形态,约占TP的76.10%.无机磷中,又以Fe/Al-P含量相对最高,约为IP的66.05%,而Ca-P和OP含量均相对较低.沉积物中TN随沉积深度增加呈下降趋势,硝态氮随沉积深度的增加呈先下降后稳定的趋势,而氨氮呈先增大后减小的趋势;沉积物中TP、IP、Fe/Al-均随沉积深度增加呈明显下降趋势,而Ca-P、OP相对较为稳定.To understand the distribution of nitrogen and phosphorus in farmed lake sediments at different depths, this thesis, based on the research of a typical farming Lake, Beimin Lake, discusses the distribution characteristics of nitrogen and phosphorus forms in sediments of different depths by delaminating the sediments with the column sampling method. The results show that organic nitrogen is the main form of nitrogen, accounting for about 94.53% of TN, and inorganic phosphorus is the main form of phosphorus in the sediments of the Beimin Lake, accounting for about 76.10% of TP; in inorganic phosphorus, Fe/A1-P content is the highest, accounting for about 66.05% of IP, and Ca-P and OP contents are relatively low; TN in the sediments declines with the increase of the depth, and nitrate nitrogen remains stable after the preliminary drop while ammonia nitrogen increases and then decreases; TP, IP, Fe/Al-P in sediments decrease obviously with the increasing depth of sediments, while Ca-P and OP are relatively stable.

关 键 词：北民湖 沉积物 氮磷形态 竖向分布 

分 类 号：X131[环境科学与工程—环境科学]