CAJ | 학술논문

以巢湖野生芦苇湿地为研究对象,调查了芦苇湿地去除浅层地下水中硝酸盐氮的效果.在芦苇生长旺盛阶段(3-5月),在芦苇湿地钻孔,聚水,取样分析了水中三氮含量及水孔不同深度土壤中反硝化细菌的数量.结果表明:芦苇区浅层地下水中硝酸盐氮仅为0.2～0.8 mg/L,远低于湿地周围井水中硝酸盐氮质量浓度(大于20 mg/L),芦苇湿地能够去除浅层地下水中硝酸盐污染;反硝化细菌在土壤中的分布呈现明显的根际效应;野生芦苇湿地较强的生物脱氮作用与反硝化细菌分布有关, 地下水中硝酸盐氮含量与反硝化细菌分布呈负相关.
이소호야생호위습지위연구대상,조사료호위습지거제천층지하수중초산염담적효과.재호위생장왕성계단(3-5월),재호위습지찬공,취수,취양분석료수중삼담함량급수공불동심도토양중반초화세균적수량.결과표명:호위구천층지하수중초산염담부위0.2～0.8 mg/L,원저우습지주위정수중초산염담질량농도(대우20 mg/L),호위습지능구거제천층지하수중초산염오염;반초화세균재토양중적분포정현명현적근제효응;야생호위습지교강적생물탈담작용여반초화세균분포유관, 지하수중초산염담함량여반초화세균분포정부상관.
The natural reed wetland near Chaohu Lake was taken as the research target,and the denitrification efficiency of natural reed wetland in shallow groundwater was investigated. Through boring and gathering water in natural reed wetland, the concentration of three kinds of nitrogen (nitrate-N, nitrite-N and ammonia-N) and the quantities of denitrifying bacteria in the soil of different depths were sampled and analyzed in the bloom period (from March to May) of reeds. The results show that, the nitrate-N concentration in groundwater in the reed area was 0.2～0.8 mg/L and significantly lower than that in surrounding wells (more than 20 mg/L), and the reed wetland can remove nitrate pollution in shallow groundwater. The distribution of denitrifying bacteria showed obvious rhizosphere effect,and the higher biodenitrification in natural reed wetland was related to the distribution of denitrifying bacteria. There was a negative relationship between the nitrate-N concentration and the number of denitrifying bacteria in groundwater.