河西走廊历史时期的人类活动

In this paper, the authors analyse the human activity in Hexi Corridor during historical time. After thousands years, especially since the Han Dynasty, through the immigration and development, constructed of frontier and military guards, built water conservancy projects and promoted farming, set administration, built cities and towns, buildingthrough the Immigration into the development Mita, the construction of frontier, military guards, building water conservancy projects and promoting farming, set county, city building and other development means the establishment, the great envoronmental change of the Hexi Corridor has taken place. Agriculture has been developed the main mode of production. The impact of human activities on the environment gradually increased and has become the main factors affecting the environment.