中国南方喀斯特地区水土流失特殊性研究

Research on Distinctiveness of Soil and Water Loss in South China Karst Area

近20年来,人们对中国南方喀斯特地区的研究日渐深入。在石漠化已成为研究热点的今天,笔者提出应当强调该地区水土流失的特殊性这一基本条件。以其特殊性为出发点,才能科学地认识该地区水土流失的本质和危害性。中国南方喀斯特地区特殊的水土流失是诸多因素造成的,地质背景是特殊性产生的前提条件,气候背景是特殊性产生的重要原因,自然因素的特殊性是水土流失特殊性产生的直接原因,人文因素对水土流失的产生有巨大驱动作用。石漠化是这一地区特殊水土流失的结果,其特殊性的研究意义在于获得适用于该地区水土流失特点的评价标准、研究方法和防治手段,最终指导石漠化防治工作。

There were more and more research activities on south China Karst in the past 20 years.Since rocky desertification becomes a research hot spot nowadays,the author suggested that the distinctiveness of soil and water loss in south China Karst area,which was a basic condition for rocky desertification,should be highlighted.Only by studying based on distinctiveness of soil and water loss,can we correctly realize its essence and hazard.The distinctiveness was caused by many factors,among which geological background was a precondition,climate background played an important role,special natural factors were direct reasons,and human activities were tremendous driving force.Rocky desertification was the result from the distinctive soil and water loss in south China Karst area.All researches on its distinctiveness aimed to obtain evaluation standard,research methods,soil and water conservation measures applied to south China Karst,which would help us prevent and control rocky desertification.