中国北方沙漠化发展趋势及对策

80年代中期,中国北方已经沙漠化的土地有20.12万平方公里,比十年前增加了2.48万平方公里,平均每年增加2103.2平方公里,发展速率1.47%,沙漠化主要发展在河北坝上、察哈尔草原和乌盟后山地区等农牧交错区.同时约有4.53万平方公里沙漠化土地得到控制,2250平方公里沙漠化土地治理逆转.只要各级重视、采取措施、恢复生态平衡,使农牧交错地区土地沙漠化得以逆转.这里还是一个很有前途的地方.

THE DEVELOPMENTAL TREND OF DESERTIFICATION AND ITS COUNTERMEASURE IN NORTHERN CHINA

It is estimated that there were 201,200 sq.km of desertified lands in Northern China in the middle of 1980's.It is showed by the study that approximately 24,800 sq.km of desertified lands have been inereased than ten years ago.The average annual growth is 2,103.2 sq.km and the growth ratio is 1.47%.It is concluded that the contemporary desertification-prone lands were aecelerated at the marginal areas on Hebei Upland,Qahar Steppe and Ulan Qarb Prefecture of Iner Mongolia.Meanwhile,45,300 sq.km of desertification-prone lands are rationally being utilized and 2,250 sq.km of deserlified lands have been rehabilitated.It can be summarized that these desertified lands are the regions with high potential for development and bright prosperity when a certain attentions were paid to adopt suitable measures for re- store the ecobalance and when desertification growth was controled and desertified lands were rehabilitated.