关键词: 河西走廊, 沙漠化灾害, 灾情分析, 减灾对策

Abstract: The Hexi Corridor of Gansu Province is one of representive regions for drought and desertification hazards. There are four mean types of hazards, Such as Sand desertification, drought, Secondary Salinazation, and windstorm and dry-hot wind etc. These may cause directily economic loss of 100-200 million Chinese Yuan(￥). According to study, There is anaggravate trend in the hazard region because of bad natural factors and over population pressure. However, the experiments of alleviate hazards in the light done in the Linze research station show that the hazards not only can be countrolled, but also the desertified land can be reversed to receice more economic benefit. The strategic measures to guard against and alleviate hazards in the light are recommanded in the paper:a. To educate local people in guarding against and alleviating hazards and set up mass protective systems; b. To study and evaluate the hazards and creat a comprehensive experimental and demonstrative district to alleviate them; c. To establish mornitoring systems and make forecast; d. To prevent desertification occur and development, study the practical technics, and give necessary financial support.