Research on dynamic evolvement of desertification in beijing and its neighboring areas by remote sensing

Desertification is one of the most serious environmental, social and economic problems in the contemporary world including China that has aroused close concerns of many countries´ governments, and China as well. The paper summarized the current status, distribution, dynamic evolvement by remote sensing as monitoring method assisted with field investigation, and forecast the development trend of desertification in Beijing and neighboring areas, analyze reasons mainly accountable for desertification, last put forward proposals concerning action program and principal measures to combat desertification.