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一、地球化学景观概况莲花山铜矿区位于大兴安岭中段东坡、松辽平原西侧的低山丘陵区,标高250—430米。本区水系不发育,多属季节性河流。因受蒙古高原季风影响,属典型的大陆性气候,年平均降水量400—500毫米,年平均蒸发量达1800毫米。该区地貌上属缓慢上升的正地形,剥蚀速度大于风化速度。松散沉积物厚度一般小于3米,表层(A 层)为灰——浅灰色砂土、亚砂土,植被不发育,厚度一般不超过20厘米;坡积层(B 层)厚度1米左右。
I. Overview of Geochemical Landscape Lianhuashan Copper Mine is located in the middle section of Daxinganling Dongpo, west of Songliao Plain hilly area, elevation 250-430 meters. This area is not developed water system, mostly in seasonal rivers. Due to the Mongolian Plateau monsoon, is a typical continental climate, the average annual rainfall of 400-500 mm, the average annual evaporation of 1800 mm. The topography of the area is a positive terrain that slowly rises, and the erosion rate is greater than the weathering rate. Loose sediments generally less than 3 meters in thickness, the surface layer (A layer) as gray - light gray sand, sandy soil, vegetation is not developed, the thickness is generally not more than 20 cm; slope layer (B layer) thickness of about 1 meter.