| Amount of comprehensive, detailed observation and investigation on geology, geomorphology and hydrology has been carried on in the Wudalianchi volcanic area in this paper. By the way of the systematic and holistic thoughts, the paper elaborated the spatial distribution and the geochemical characteristics of the surface water body and the underground water body in the area, and has given the detailed explanation to the origin of mineral water.The condition of environmental quality of surface water has been evaluated in the method of fuzzy mathematics, while the internal relationship among the main pollution factors of surface water body has been carried on in the factor analysis. Main factors controling the characteristics of the water bodies in Wudalianchi volcanic area, is the fracture in the area, the rock-water interaction of basalt and granite, and the permafrost layer. The water qualities of Sanchizi Lake and Yaoquan Lake, mainly polluted by nitrogen and phosphorus, conform to the State Surface Water QualityⅡ,ⅤClass Standards respectively. The thirteen pollution factors of Sanchizi Lake and Yaoquan Lake can be approximated in the four and the three principal factors each. |
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