摘要
我国典型溶蚀丘陵系统分布于湖南中西部雪峰山地区的新化 -涟源县一带。主要宏观岩溶地貌类型有丛丘谷地、峰丘谷地、峰丛洼 (谷 )地、丘岭谷地。它们之间岩溶发育程度、形态组合特征差异明显。本文在论述不同地貌系统岩溶水水化学特征及其溶蚀能力的基础上 ,用水化学平衡法对不同地貌区的溶蚀速度进行了计算 ,并分析了现代岩溶作用强度趋异的原因。溶蚀丘陵区平均溶蚀速度为 2 5 .19m3·km- 2 ·a- 1 ,决定了该区宏观地貌以半岩溶形态为主导特征。
The typical corrosional hill system is mainly distributed in Lianyuan_Xinhua County,around Xuefeng mountain area.There are four karst landform types,namely clustered_hill valley,ridged_hill valley,peak_cluster depression and gentle_hill valley,which have quite different karst development histories and complex features.\;Based on the discussion of hydrochemical features of karst water in various geomorphological systems and its corrosion capacity,the author calculated the corrosion velocity by using hydrochemical equilibrium method and analysed varied causes of modern karstification intensity.The average corrosion velocity in corrosional hill is 25.19 m 3·km -2 ·a -1 ,ranging form 10.26 to 30.04 m 3·km -2 ·a -1 , which led the semi_karst formation to the prominent macro_geomorphologhical pattern in the study area.
基金
国家计委专项项目!"滇黔桂湘岩溶贫困区岩溶水有效开发规划建议与开发示范"部分成果之一
关键词
溶蚀丘陵
岩溶作用强度
地貌趋异
构造地貌
corrosional hill modern karstification intensity macro_geomorphological differentiation
