CAJ | 학술논문

丰水期对汇入红枫湖的后六河、麻线河、羊昌河和桃花园河等河水中氮素的形态和含量进行测定,结果表明NO_3~--N是氮素的主要形态,约占TN的25%～65%;三态氮在空间分布上,从上游至下游,四条河流表现出不同的变化规律,后六河NH_4~+-N、NO_2~--N与NO_3~--N的变化规律基本上一致外,含量总体上逐渐增加;其它三条河流中,NH_4~+-N与NO_3~--N的含量呈现相反的变化趋势,NO_2~--N的变化规律则不明显.该流域整体上表现为非点源污染的特征.后六河和麻线河地下水中NO_3~--N的含量明显高于相应河水中的含量.该研究对亚热带小流域河水中氮磷含量及形态变化研究具有借鉴意义,对该流域的环境规划、环境管理和环境污染治理具有指导意义.
봉수기대회입홍풍호적후륙하、마선하、양창하화도화완하등하수중담소적형태화함량진행측정,결과표명NO_3~--N시담소적주요형태,약점TN적25%～65%;삼태담재공간분포상,종상유지하유,사조하류표현출불동적변화규률,후륙하NH_4~+-N、NO_2~--N여NO_3~--N적변화규률기본상일치외,함량총체상축점증가;기타삼조하류중,NH_4~+-N여NO_3~--N적함량정현상반적변화추세,NO_2~--N적변화규률칙불명현.해류역정체상표현위비점원오염적특정.후륙하화마선하지하수중NO_3~--N적함량명현고우상응하수중적함량.해연구대아열대소류역하수중담린함량급형태변화연구구유차감의의,대해류역적배경규화、배경관리화배경오염치리구유지도의의.
This paper measured the chemical species and the concentration of nitrogen in the tributary rivers of the Hongfeng Lake, Houliu River, Maxian River, Yangchang River and Taohuayuan River, during the high water period. The results showed that the NO_3~--N is the dominated chemical species, accounts of 25 to 65 percent of the total nitrogen (TN). From the upstream to the downstream of the Houliu River, the TN content increases and the contents of NH_4~+-N, NO_2~--N and NO_3~--N are positively correlated. In the case of other three rivers, the contents of NH_4~+-N and NO_3~--N are negatively correlated and the variations of NO_2~--N are irregular. The nitrogen pollution of the watershed of Hongfeng Lake is dominated by non-point sources. The concentrations of NO_3~--N in the groundwater samples of Houliu River and Maxian River are higher than those of the respective river samples. The approach of this study is useful in the studies of phosphorus in the streams of subtropical area, and the result of this study has directive significance to environmental programming and management of this area.