CAJ | 학술논문

基于2007-2008年对库区次级河流临江河水质及流量的监测资料,分析了临江河回水区总氮(TN)、总磷(TP)的动态变化特征,并对其通量进行了估算.结果表明,临江河回水区的TN、TP动态变化明显.与TN浓度的季节性变化相反,TP浓度呈现出丰水期高于枯水期的变化规律;TN、TP通量均表现出丰水期明显高于枯水期的规律.平均每年约有4 142 t的TN、455 t的TP汇入临江河回水区;且与2007年相比,2008年的TN输入通量减少了约32.7%,而TP通量却增加了34.3%,这种变化与TN、TP浓度的年际变化一致;TN通量的变化主要受河流流量的影响,TP通量受浓度和流量的双重影响.进一步分析表明,TN主要通过点源途径进入河道,以氨氮(NH3N)为主要存在形态,其次为溶解性有机氮(DON);TP主要通过面源途径进入河道,以磷酸盐(PO_4~(3-)-P)为主要存在形式.研究表明,要改善临江河回水区的水环境质量,控制流域内的点源污染是关键.
기우2007-2008년대고구차급하류림강하수질급류량적감측자료,분석료림강하회수구총담(TN)、총린(TP)적동태변화특정,병대기통량진행료고산.결과표명,림강하회수구적TN、TP동태변화명현.여TN농도적계절성변화상반,TP농도정현출봉수기고우고수기적변화규률;TN、TP통량균표현출봉수기명현고우고수기적규률.평균매년약유4 142 t적TN、455 t적TP회입림강하회수구;차여2007년상비,2008년적TN수입통량감소료약32.7%,이TP통량각증가료34.3%,저충변화여TN、TP농도적년제변화일치;TN통량적변화주요수하류류량적영향,TP통량수농도화류량적쌍중영향.진일보분석표명,TN주요통과점원도경진입하도,이안담(NH3N)위주요존재형태,기차위용해성유궤담(DON);TP주요통과면원도경진입하도,이린산염(PO_4~(3-)-P)위주요존재형식.연구표명,요개선림강하회수구적수배경질량,공제류역내적점원오염시관건.
Based on monitoring data of water quality and river runoff from 2007 to 2008, the dynamics of TN and TP transported into the backwater region of the Linjiang River were investigated and fluxes of TN and TP were also estimated. It was shown that the dynamic changes of TN and TP were significant. The concentration of TP in rainy seasons was higher than that in dry seasons, while the cases for TN was contrary. The fluxes of TN and TP were significantly higher in rainy seasons than those in dry seasons. On average, there were about 4 142 t TN and 455 t TP transported into the backwater region of the Linjiang River every year. And TN flux decreased by 32. 7% from 2007 to 2008, while TP flux increased by 34.3%, which was in agreement with the inter-annual variation of the concentrations of TN and TP. TN flux was primarily influenced by river runoff, whereas TP flux was affected by both concentration and runoff. Further analyses indicated that TN was mainly caused by point source pollutants(dominated by NH_3-N, and then DON). On the contrary, TP was mainly caused by plane source pollutants(dominated by PO_4~(3-) -P). It was also indicated that it was critical to control the point source pollution in the basin to primote the water quaility of the backwater region of the Linjiang River.