Change trend analysis of ammonia nitrogen in Nenjiang River main stream under fluctuating precipitation  

作　　者：李远[1] 常学礼[2] 孙朋[3] 吴孟泉[2] 刘紫恩[3] 付益伟[3] 王琼[3] 向明灯[1] 于云江[1] 

机构地区：[1]环境保护部华南环境科学研究所,广东广州510655 [2]鲁东大学地理与规划学院,山东烟台264025 [3]中国环境科学研究院,北京100012

出　　处：《环境污染与防治》2013年第5期I0002-I0007,12,共6页Environmental Pollution & Control

摘　　要：将2004-2010年嫩江流域沿途13个气象站的降水量作为径流的主要考察因子，以嫩江最下游的自沙滩水环境监测站获得的氨氮监测数据为流域总体氨氮污染水平表征，分析了降水波动对嫩江流域氨氮污染变化的影响。结果表明，嫩江流域在年度内的氨氮质量浓度以枯水期最高，平均为（0．99±0．48）mg／L，在丰水期最低，平均为（O．58±0．08）mg／L。从年际总体变化趋势来看，2004-2010年嫩江流域氨氮浓度总体呈增加趋势。降水量的年内分布格局对嫩江流域氨氮浓度的影响在不同时期略有差别。在平水期，降水量变化对氨氮浓度的影响不显著；但在枯水期、丰水期，降水量的波动对氨氮浓度有较显著（Sig．〈O．05）的影响。从年尺度上看，随降水量增加，嫩江流域中氨氮浓度总体呈下降趋势。The influence of precipitation fluctuation on ammonia ni- trogen pollution in Nenjiang River watershed was investiga- ted with rainfall data as main inspective factor of runoff and ammonia nitrogen data to represent the ammonia nitrogen pollution level. The rainfall data （2004-2010） were obtained from thirteen national meteorological stations along Nenjiang river watershed, and ammonia nitrogen data were measured at Baishatan water quality monitoring stations situated lower reaches of the Nenjiang River. Results showed that ammonia nitrogen content was highest in dry period and lowest in high water period, the average value of ammonia nitrogen in dif- ferent periods were （0.99~0.48） , （0.58~0.08） mg/L re- spectively. Among different period in yearly scale, the am- monia nitrogen content shows similar changing trends and in- crease by year from 2004 to 2010. The yearly precipitation distribution had different effects on ammonia nitrogen content at different periods. The influence of precipitation on river ammonia content was insignificant in normal river flow peri- od, while the influence was significant in water period and dry period （Sig. dO. 05）. In terms of changing trend, pre- cipitation fluctuation had in significant effect on ammonia content, the ammonia concentration in Neijiang River was de- creased with increasing the precipitation at entire year period.

关 键 词：《环境污染与防治》 英文摘要 期刊 编辑工作 

分 类 号：G353.23[文化科学—情报学]