一花海子位于河西走廊中玉门与酒泉之间,即嘉峪关附近之榆树山西北面的地区。这儿是一东西长约50公里,南北宽约25公里,面积约达1250方公里的封闭式盆地。盆地底部除局部(营盘部周围)的耕地及沼泽地区外,其余全部被沙漠占据。这种沙漠的质地多是细砂及粉砂质细砂,而且在好几处见到砂丘的下面埋藏着古代水流沉积层及沼泽化的遗迹,由这些观察资料 A flower in the Hexi Corridor in the corridor between Yumen and Jiuquan, Jiayuguan near the northwest of the Yushu area. Here is a closed basin of 50 km east to west and 25 km south to north with an area of ​​1250 km2. At the bottom of the basin, except the part of the arable land and marshy area (around Yingpan department), the rest are all occupied by deserts. The texture of this desert is mostly fine sand and fine silty sand, and in several places to see below the sand buried ancient flow sediments and swampy traces of these observations