关键词: 整体抗旱性, 阶段性响应, 极端干旱, 应激反应, 主动适应, 被动适应

Abstract: Based on conceptual review of desertification, the situations of land desertification in Liaoningprovince were analysed.About 60.7%of the total land area of Liaoning province has been affected by desertification or potential desertmcation. Factors resulting desertification include waterand soil erosion, desertification,salinization, forest and grass land degeneration, etc. Strategiesfor preventing further desertification were also put foeward in the paper.

Key words: overall drought resistance, staged response, extreme drought, acute response, active adaptation, passive adaptation.