艾比湖氮素的水平分布及环境意义

Nitrogen Horizontal Distribution and Environmental Meaning in Ebinur Lake

中文关键词:  氮索  水平分布  艾比湖

英文关键词:Nitrogen  Distribution  Ebinur lake

中文摘要:

      针对艾比湖水域面积逐渐萎缩的现实，系统地研究了TN、NH4^＋、NO3^--N和NO2^--N在艾比湖水体中的水平分布规律及其环境意义。结果表明，艾比湖水体中总氮分布特征有浅水区向深水区递减的特征，湖南部区域为总氮高值区，北部区域次之，中部最小。铵态氮为氮素的主要存在形态，其分布状况与总氮基本一致。硝态氮、亚硝态氮含量较小，分布水平与总氮基本一致。水体中总氮对底栖生物已经具有最低级别的生态毒性效应，对底栖生物群落及生态环境构成了威胁。

英文摘要:

      Based on the reality that Ebinur lake area is gradually shrinking,the paper studied horizontal distribution of TN,NH_4~+ ,NO_3~- -N and NO_2~- -N in the lake water and their meaning.The results showed that the content of total nitrogen is decreasing from shallow to deep water zone,and its south area has higher nitrogen content than north area,while the centre has the least.The main existing form of nitrogen is ammonium,nitrate and sub-nitrate content are smaller,all the three have same distribution as the total nitrogen.Total nitrogen in the lake water has reached the lowest value of coo-toxic which can threaten the benthic community and affect the ecological environment.