Nitrogen isotopic technique was used to study the situation and seasonal change of nitrogen pollution in inflowing rivers and an outflowing river of Hongfeng Lake in this paper.

• 利用氮同位素技术对贵州红枫湖各输入、输出河流氮污染状况和季节性变化规律进行了研究,并通过对输入河流和输出河流的氮对比,探讨红枫湖的氮负荷变化。