• 首页
  • 刊物介绍
  • 编委会
  • 过刊浏览
  • 订阅指南
  • 在线投稿
  • 联系我们
基于数字高程模型的岩溶地貌类型划分——以1:5000西南岩溶区地质填图试点为例
    点此下载全文
引用本文:山克强.基于数字高程模型的岩溶地貌类型划分——以1:5000西南岩溶区地质填图试点为例[J].中国岩溶,2021,(2):334-345. SHAN Keqiang.Landscape classification in karst areas based on DEM:A case study of 1∶50,000 pilot geological mapping of karst areas in southwestern China[J].Carsologica Sinica,2021,(2):334-345.
摘要点击次数: 20
全文下载次数: 37
学科分类:
作者单位
山克强 中国地质科学院岩溶地质研究所 
基金项目:中国地质调查局地质调查项目(DD20190672、DD20160060、12120114042601、DD20160061)
中文摘要:数字高程模型可以定量描述地貌,而基于峰丛洼地实体的岩溶地貌量化统计方法目前尚未确立。文章在1:50 000地质测量的基础上,将西南岩溶区地质填图试点地区的地层重新划分组合为火山岩层组、碎屑岩层组、灰岩层组、白云岩层组、泥灰岩层组、灰岩碎屑互层层组、白云岩碎屑岩互层层组7种层组类型;基于1:50 000数字地形图构建了研究区数字高程模型(DEM),通过空间分析技术建立了区域洼地锥峰DEM,以岩溶层组为统计单元,分析出各个单元的锥峰洼地数字特征,并定义锥峰洼地发育系数(k),量化峰丛洼地发育程度,将研究区地貌划分为5种地貌类型:峰丛洼地(k>8.5),锥峰洼地极为发育;峰丛谷地(1.9<k≤8.5),锥峰较为发育,洼地中等发育;丘岭谷地(0.9<k≤1.9),锥峰弱发育,洼地极少发育;溶蚀中山(0<k≤0.9),锥峰、洼地极少发育;侵蚀中山(k=0),发育冲沟,无岩溶形态发育。
中文关键词:乌蒙山  岩溶地貌  高程模型  层组  地貌类型
 
Landscape classification in karst areas based on DEM:A case study of 1∶50,000 pilot geological mapping of karst areas in southwestern China
Abstract:Digital elevation model(DEM)can quantitatively describe landforms. While the statistic approach of karst entities based on peck-cluster depression has not been established yet. Based on 1:50,000 digital topographic maps of Dawan,Muxiang,Yanzikou and Zhuzhong in the Wumengshan mountains, this work builds the DEM of the study area and the peak-cluster depression DEMs by spatial analysis. On the basis of 1:50,000 geology surveys, the strata in the survey area are reclassified into seven karst strata association types, volcanic strata group, clastic strata group, limestone strata group, dolomite strata group, marl strata group, limestone-clastic interbed group and dolomite-clastic interbed group. Taking karst strata association as a statistical unit, the parameters of peak-cluster depression of each unit are analyzed. Peak-cluster depression development coefficient (k) is defined to quantify the development degree of karst. The geomorphology of the survey area is divided into 5 landscape types. Of them, Ppeak-cluster depression, k>8.5, peak depression is extremely developed. Ridged-hill valley, 1.9<k≤8.5, the cone peak is relatively developed, and the depression is moderately developed. Clustered-hill valley, 0.9<k≤1.9, the cone peak is weakly developed, and the depression is rare. Karst mountain,0<k≤0.9, cone peak depression is also rare. Middle mountain,k=0, developed gullies, no karst. The karst geomorphologic types established are consistent with the combined characteristics of karst entities. The classification results reflect the distribution and differentiation characteristics of different karst landscape in a small range.
keywords:Wumengshan mountains, karst landscape, DEM, karst strata association, landscape classification
查看全文  查看/发表评论  下载PDF阅读器


您是第 5690776 位访问者
版权所有《中国岩溶》编辑部
主管单位:中国地质科学院 主办单位:中国地质科学院岩溶地质研究所 地址:广西桂林七星路50号
邮政编码:541004 电话:0773-5812949 7796657 电子邮件:zgyr@mail.cgs.gov.cn

技术支持:北京勤云科技发展有限公司