摘要
在对云南路南石林的实地研究基础之上,结合前人的研究成果,文章对喀斯特地区的成土过程和土壤侵蚀对石林发育的影响进行了探讨。研究表明,土壤是石林向深性发育的原动力。土壤CO2和土壤水组合形成的土下强溶蚀带的存在使得石林通过土下溶蚀不断增长拔高,但溶蚀下限一般在土下10m以内。表土的剥蚀使土壤趋于减少,一旦其速率大大快于成土速率,将导致土壤变薄,石林的向深性发育也将因此而停滞并走向消亡。
<Abstrcat>Based on the field investigation on the stone forests in Yunnan,and integrated with achievements of other researchers,the influence of soil formation and erosion in karst areas on the evolution of stone forest are discussed.The results show that soil is the fundamental driving force in vertical development of stone forest.An intensive sub-soil dissolution zone,brought about by the harmonious working of soil CO2 and soil water,makes stone forest higher and higher,and the bottom line for the zone lies in around 10 m below ground surface.Soil erosion takes away soil matters,and once soil denudation rate goes beyond its formation rate,soil would become thinner and thinner,as a result, stone forest would disappear over time without soil cover.
出处
《水土保持研究》
CSCD
北大核心
2005年第4期49-52,共4页
Research of Soil and Water Conservation
基金
国家自然科学基金重点项目(40335046)
教育部高等学校博士学科点专项基金(20040001038)
关键词
土壤
石林
喀斯特
土下溶蚀
土壤侵蚀
soil
stone forest
karst
sub-soil dissolution
soil erosion
