【摘要】 本文从国内外对半荒漠划分指标、概念的歧义，分析了半荒漠的内涵、外延、自然环境特征及在我国的具体分布；讨论了半荒漠与荒漠及干旱地区的关系、区别；明确了半荒漠的划分指标及其概念，并从防沙治沙角度出发，提出了把半荒漠作为特定的生物气候带，并列于草原与荒漠之间。更多还原

【Abstract】 The paper, starting with the differences on classification index and concept of sedri -desert at home and abroad, analyzes the intension and extention physical features and spatial distributionof semi - desert; discusses the relation and difference among semi - desert, desert and arid land; makesdefinite the classilication indexes and concept of semi - desert; suggests taking sewh - desert, a specificbioclirnatic zone,as equal as steppe and desert from the angle of desertification coInbating.更多还原