Abstract:

Based on the remote sensing satellite monitoring,line transect and sample investigation methods and questionnaire method,desertified land and sandified land in Guinan County of Qinghai Province from 2009 to 2014 were studied.The results indicate that the desertified land area in Guian county was 3 691.81 hm ² in 2014,the sandifed land area was 99 131.41 hm ²,the trend of sandified land area was 35 418.62 hm ².Compared with these in 2009,over 5 years the desertified land area decreased by 1 154.38 hm ²,while the sandified land area decreased by 2 467.52 hm ²,at meantime the trend of sandified land area diminished by 5 035.82 hm ².Despite the austere situation of combating desertification,there has been a positive situation featured by deterioration generally restrained,desertified and sandified land area acreage decreased continuously.Finally,some countermeasures and antidotes to the problem are proposed on the basis of the analysis of the present situation of desertification.

Key words: desertified land, sandified land, combating desertification, Guinan County