谢桥采煤塌陷水域氮、磷时空分布特征

Temporal and spatial distribution of nitrogen and phosphorus of Xieqiao coal mining subsided water area

选取具有代表性的谢桥塌陷水域为研究对象,分别于2011年8月和10月进行现场采样,分析研究了不同形态氮、磷空间分布特点及不同季节的分布规律.结果表明,在空间分布上,靠近农田的塌陷水域水体中氮、磷的含量高.从季节变化上,塌陷水域各监测点的总氮(TN)含量秋季高,夏季低,季节性差异较为明显;氨氮(NH4+-N)秋季含量明显高于夏季,且整体波动性大;塌陷水域中总磷(TP)的含量差异性及波动性不显著.

Coal mining water-subsided area is one of special mining areas in Huainan.In order to analyze the distribution characters of nitrogen and phosphorus of temporal and spatial parts of Coal mining water-subsided areas,Xieqiao mining subsided water area was selected as a target area in this paper.The research was performed by local sampling in the August and October,2011,and then seasonal and spatial distribution of different forms of nitrogen and phosphorus were analyzed.The results indicated that： higher content of nitrogen or phosphorus was presented in those water-subsided areas that closed to the farmlands,and a significant discrepancy existed in the spatial distribution of both summer and autumn.The amount of total nitrogen（TN） was presented higher in the autumn than in the summer,which indicated an obviously seasonal discrepancy;the amounts of NH＋4-N in the autumn were presented significantly higher than in the summer,and the huge volatility existed in the summer and autumn;but no significant discrepancy and volatility was observed in total phosphorus（TP）.