The wind-sand impacted lands in Tibet Autonomous Region are mainly distribrted in the inter-mountain basin and on river beaches,river terraces and on alluvial-deluvial fans and hill slopes at mountain pass in river valley.There are three natural belts from the sortheast to the nothwest of Tibet and there are remarkable differences in wind-sand impacted lands Patterns and their characteristics in each belt.The southeast part of Tibet belongs to sub-humid forest-meadow steppe belt in Alpine temperote-sub-tropical zone and its surface is mainly composed of vegetated and semi-fixed dunes.The south'part of Tibet is located in the semi-arid steppe of alpine temperate zone and semi-fixed,semi-shifting and partially mobile dunes are the main duneforms.The north and the northwest parts of Tibet are situated in the arid desert and extremely arid desert of alpine temperatr-frigid zone and mobile dunes occupy the dominant percentage of duneforms,and there are some existence of a few vegetated semi-fixed dunes and bush vegetated sand mounds along river courses,lake shores and in the low-lying areas with high underground water table.It is concluded on the basis of the field invvestigation and the study in recent years that the contemporary wind-sand impacted lands and their distributive situation in Tibet are related to the physical Process caused by natural factors and to the human accelerative process caused by human factors.Consequently,the developmental trend of wind-sand impacted lands in future in Tibet Region will be determind by the impacts of natural factors and human factors in coming years.