基于转移概率的河北省定兴县地表基质垂向分布特征分析  

VERTICAL DISTRIBUTION CHARACTERISTICS OF GROUND SUBSTRATE BASED ON TRANSITION PROBABILITY MATRIX:A Case Study of Dingxing County,Hebei Province

作　　者：乔衍溢 霍润斌 鲁敏 王献 赵凯明 张盼望 刘勇[1] QIAO Yan-yi;HUO Run-bin;LU Min;WANG Xian;ZHAO Kai-ming;ZHANG Pan-wang;LIU Yong(Langfang Natural Resources Comprehensive Survey Center,CGS,Langfang 065000,Hebei Province,China)

机构地区：[1]中国地质调查局廊坊自然资源综合调查中心,河北廊坊065000

出　　处：《地质与资源》2023年第6期789-798,共10页Geology and Resources

基　　金：中国地质调查局项目“河北省保定地区自然资源地表基质层试点调查”(ZD20220117).

摘　　要：地表基质层为地表自然资源的承载体和赋存体的空间实体.查明地表基质平面分布、垂向组合及空间变异是地表基质调查的关键.将转移概率统计方法应用到河北省定兴县5 m以浅地表基质层,通过极限概率分析、置换分析、熵分析和差值矩阵环流分析,总结出定兴县及各地貌类型的地表基质的垂向组合与横向变化特征,并构建地表基质结构序列.研究表明,该地区长地表基质受多种复杂成因因素的影响,其类型剧烈变化,自下至上的砂土基质-壤质砂土基质-砂质壤土基质-壤土基质为区内典型代表组合,壤质砂土基质-黏质壤土基质为次级组合类型.结果显示,转移概率方法能够较为准确地刻画地表基质的空间分布,能够从大量繁杂的编录中获取区域内地表基质垂向变化的宏观规律.Ground substrate serves as the carrier of surface natural resources and spatial entity of occurrence body.Finding out the characteristics of plane distribution,vertical assemblage and spatial variation of ground substrate is the key to ground substrate survey.The transition probability statistical method is applied to the ground substrate in the depth of 0-5 m in Dingxing County of Hebei Province.The vertical combination and lateral variation characteristics of ground substrate in Dingxing County and various geomorphic types are summarized and the structure sequence of ground substrate is constructed through limit probability analysis,displacement analysis,entropy analysis and difference matrix circulation analysis.The study shows that the types of ground substrate in the area vary dramatically under the influence of many complex genetic factors.The typical combination is sand-loamy sand-sandy loam-loam ground substrate from bottom to top,and the secondary combination loamy sand-clay loam ground substrate.The results indicate that the transition probability method can accurately describe the spatial distribution of ground substrate,and obtain the macroscopic rule of vertical change of ground substrate in the region from large numbers of miscellaneous catalogues.

关 键 词：转移概率矩阵 马尔可夫链 地表基质 垂向结构 环流分析 河北省 

分 类 号：P642.1[天文地球—工程地质学]