一、地理位置与自然条件肃南县明花区位于祁连山南冲积扇一马营岗滩的边缘。东径99°—99°30,北纬39°20—39°40,东西长约61公里,南北宽约27.5公里,地形由东南向西北倾斜,坡度1/200—3/1000。在西部界牌墩至前滩一线是一微高的沙梁;在北部盐池及东北部黑泉一带是剥蚀的低山,形成一个四面高中间低平的碟形封闭式盆地。 I. Geographical Position and Natural Conditions Minghua District, Sunan County is located at the edge of Mamayingang Beach in the southern alluvial fan of Qilian Mountains. East of 99 ° -99 ° 30, north latitude of 39 ° 20-39 ° 40, something about 61 kilometers long, north-south width of 27.5 kilometers, topography from southeast to northwest tilt, slope 1 / 200-3 / 1000. In the west, the boundary between the pier and the foreshore is a slightly elevated sand beam; in the northern part of Yanchi and in the northeast of Heiquan, there is an eroded low mountain, forming a dish-shaped closed basin with high, medium and low levels on all four sides.