【摘要】 作为广西的重要粮食基地的喀斯特平原区,是气候干旱和喀斯特干旱迭加的地区,干旱问题已成为该区经济发展的障碍。本文主要通过以往的研究资料的分析、计算,从造成干旱的气候、喀斯特地质背景及人类活动3个方面的主要因素,分析干旱形成原因和量化干旱程度。研究结果表明,气候因素是产生干旱的基本原因;可溶岩地质基础是干旱形成的重要原因;人类不合理活动则加重了旱灾的程度。其干旱程度,在峰丛谷地农业区最为严重,峰林谷地农业区和峰林平原区中等,孤峰平原区最轻。更多还原

【Abstract】 As an important agricultural production base, it is an area suffers drought not only being lead by climate but also by karst geologic factors there in central Guangxi karst drought agricultural area. Drought has become serious impediment to regional development. In order to promote agricultural development, status quo and the reason of drought are studied rationally in view of the major factors including climate, geology, and the impact of human action, especially the liability to drought. The result of the study proves that the basic reason for the drought is the climate, and the karst hydrogeological background is very important for the drought, the impact of unreasonable human action enforced the degree of the drought. About the degree of the drought, the karst clustervalley is the most serious area, the stone peak valley and the stone peak plain is moderate, and the slightest area is isolated stone peak plain.更多还原