论文部分内容阅读
3.21万平方公里的毛乌素沙漠,其南缘高为5～10米的新月形沙丘链,多年来,以不可阻挡之势向盐池北部一带重重地挤压过来,而柳杨堡乡首当其冲,狂风推移的明沙丘在逐渐蔓延南移的过程中,一步步淹没了该乡东部古老的戈壁滩,形成了明沙边沿,人们把这里称为“沙边子”。沙边子年降水量不足250毫米,植被覆盖率不足20%,土地沙化程度达75%以上。这里亘古无人居住,唯有黄沙驻足,唯有狂风经过。斗转星移,光阴荏苒,这里的人们经过多年与大
3.21 million square kilometers of the Mu Us Desert, the southern margin of 5 to 10 meters high crescent dune chain, over the years, with an irresistible trend to the salt pond north of heavy squeeze over, but Liu Yangbao Township bear the brunt of the wind During the gradual spread of the south bank, the migrated Ming dune gradually flooded the ancient Gobi Desert in the eastern part of the township to form the edge of Mingsha, which is referred to as the “sandside”. The amount of annual precipitation less than 250 millimeters of sand, vegetation coverage less than 20%, the degree of land desertification of more than 75%. Here ancient uninhabited, only the yellow sand stopped, only the wind through. Fighting stars, time flies, where people after many years and big