CAJ | 학술논문

[目的]研究凤眼莲残体对城市河道有机物的影响.[方法]监测调查污染河道内凤眼莲死亡前后水体有机污染主要指标的变化,探讨凤眼莲残体对污染河流有机污染的影响.[结果]在调查河段,凤眼莲的腐烂分解主要发生在生长后第2年2～4月,对河流水体的有机污染也主要集中在此期间;凤眼莲残体导致水体高锰酸钾指数(COD_(Mn))、5 d生化需氧量(BOD_5)略有增加,在4月份各监测点的COD_(Mn)、BOD_5均达年度最大值;凤眼莲死亡分解对下游虽有一定的影响,但影响并不显著(P>0.05).[结论]该研究为进一步了解凤眼莲死亡引起的二次污染状况提供参考.
[목적]연구봉안련잔체대성시하도유궤물적영향.[방법]감측조사오염하도내봉안련사망전후수체유궤오염주요지표적변화,탐토봉안련잔체대오염하류유궤오염적영향.[결과]재조사하단,봉안련적부란분해주요발생재생장후제2년2～4월,대하류수체적유궤오염야주요집중재차기간;봉안련잔체도치수체고맹산갑지수(COD_(Mn))、5 d생화수양량(BOD_5)략유증가,재4월빈각감측점적COD_(Mn)、BOD_5균체년도최대치;봉안련사망분해대하유수유일정적영향,단영향병불현저(P>0.05).[결론]해연구위진일보료해봉안련사망인기적이차오염상황제공삼고.
[Objective] The research aimed to study the effects of Eichhornia crassipes remains on the organic mater in urban riverway. [Method] The main indices changes of organic pollution in polluted river before and after the death of Eichhornia crassipes were surveyed. The effects of Eichhornia crassipes remains on the organic pollution in polluted river were discussed. [Result] The investigation indicates that Eichhornia crassipes remains decomposed and polluted water from February to April mainly. It made the value of COD_(Mn) and BOD_5 increase slightly. The disparity in the content of organic pollution was bigger on March, 2004. In April, the value of COD_(Mn) got the maximum, and the value of BOD_5 got the peak. Moreover, it influenced on the lower reches sightly(P>0.05). [Conclusion] The research provided reference for understanding the second pollution caused by the death of Eichhornia crassipes further.