云南省蒙自东山岩溶地区村寨水塘调查与环境质量评价
Investigation of the Village Ponds and Environmental Quality Assessment in Dongshan Karst Area, Mengzi,Yunnan Province

摘要： 选取了云南省蒙自东山岩溶地区具有代表性的22个村寨水塘开展调查研究。通过测试分析，发现蒙自东山地区村寨水塘属于中性-碱性水质，水塘的氨氮和TP平均浓度达到地表水体Ⅴ类水标准限值的166倍和068倍；TN和 SO42-平均浓度达到地表水体Ⅴ类水标准限值337倍和1624倍。研究区水塘中 Mn、Cu、Zn、Cd和Pb平均浓度达到地表水体Ⅴ类水标准限值的65154倍、377倍、2174倍、590倍和410倍。据调查，东山岩溶地区村寨水塘污染普遍且严重，均为Ⅴ类水：其中在白姑村水塘中Zn、Cd的浓度达到地表水水体Ⅴ类水限值的4461倍、865倍，应引起当地居民和政府的高度注意。
Abstract: There are 22 village ponds in the Dongshan karst area for investigation in Mengzi, Yunnan Province. Based on pH analysis, the village ponds is belong to the neutralalkaline water quality. The average concentrations of ammonianitrogen and TP in ponds are 166 and 068 times as those of the class Ⅴ on the surface water. The average concentrations of TN and SO42- in ponds are 337 and 1624 times as those of the class Ⅴ on the surface water. On the other side, the average concentrations of Mn, Cu, Zn, Cd and Pb in ponds are 65154, 377, 2174, 590 and 410 times as those of class Ⅴ on the surface water. These reservoirs were polluted heavily by heavy metals. The village ponds pollution was widespread and serious in Dongshan karst area, and the water is class Ⅴ. The concentration of Zn and Cd in Baigu village reservoir is 4461 and 865 times as class Ⅴ water. The local population and the government should pay more attention to these situation