写在大漠上的论文常兆丰土地沙漠化是人类面临的一个越来越严重的问题。今天，在人类赖以生存的地球上，沙漠、沙漠化土地和戈壁面积占据了４５６０万平方公里，为陆地面积的３０．５％。我国沙漠、沙漠化土地和戈壁面积１５３．３万平方公里，为国土面积的１５．９％，已... Papers written in the desert Chang Zhao Feng Land desertification is an increasingly serious problem facing mankind. Today, on the planet on which mankind depends, deserts, desertified lands and Gobi areas occupy 45.6 million square kilometers, accounting for 30.5% of the land area. China’s desert, desertified land and Gobi area of ​​153.3 million square kilometers, 15.9% of the land area, has ...