摘要
表层岩溶带是喀斯特地区水分重要的赋存与运移空间,是该地区水文过程的重要控制因素,其发育受气候、岩性、地貌等多种因素影响。选取贵州普定县陈旗流域典型山体为研究对象,采用山坡剖面曲率描述山坡地形,利用探地雷达现场勘测表层岩溶带发育厚度,在此基础上分析了表层岩溶带发育特征及其受地形因素的影响。结果表明,喀斯特山体地形低凹处具有较好的水动力条件与较强的溶蚀潜力,促进了表层岩溶带的发育;山坡表层岩溶带发育厚度与剖面曲率呈反比关系,凹形山坡对应的表层岩溶带发育厚度大于凸形山坡;坡间连接带低洼处表层岩溶带厚度大于相同高度的山坡表层岩溶带发育厚度。
As important storage and transportation space,epikarst is a main influence factor on the water cycle in karst areas,and there are some influential factors,such as climate,lithology,landform and so on,affect it.The study is implemented in a small watershed of Chenqi within Puding County,Guizhou Province.Profile curvature was used to describe hillslope terrain,and Ground Penetrating Radar（GPR） was used to investigate epikarst depth.Based on these results,the influence of topography on epikarst has been studied.Depressions on karst mountains have better hydrodynamic and dissolution conditions,thus they could accelerate the development of epikarst.There is an inverse relationship between epikarst depth and profile curvature,and the concave hillsolpe has a thicker epikaret zone than the convex hillslope.The results of field investigations also show that the depressions among hillslopes have thicker epikaret zones than the hillslopes.
出处
《地球与环境》
CAS
CSCD
北大核心
2012年第2期137-143,共7页
Earth and Environment
基金
国家自然科学基金项目(40930635
41101018
41001011)
水文水资源与水利工程科学国家重点实验室自主课题(2009586412)
博士点基金项目(20090094120008)资助
