王建伟, 宋立东, 佟智强, 刘浩, 杨洪祥, 高博. 基于地貌单元分区的地表基质结构调查方法与实践——以长春地区为例[J]. 地质与资源, 2024, 33(3): 355-364. DOI: 10.13686/j.cnki.dzyzy.2024.03.011
    引用本文: 王建伟, 宋立东, 佟智强, 刘浩, 杨洪祥, 高博. 基于地貌单元分区的地表基质结构调查方法与实践——以长春地区为例[J]. 地质与资源, 2024, 33(3): 355-364. DOI: 10.13686/j.cnki.dzyzy.2024.03.011
    WANG Jian-wei, SONG Li-dong, TONG Zhi-qiang, LIU Hao, YANG Hong-xiang, GAO Bo. METHOD AND PRACTICE OF GROUND SUBSTRATE STRUCTURE SURVEY BASED ON GEOMORPHIC DIVISION: A Case Study of Changchun Region[J]. Geology and Resources, 2024, 33(3): 355-364. DOI: 10.13686/j.cnki.dzyzy.2024.03.011
    Citation: WANG Jian-wei, SONG Li-dong, TONG Zhi-qiang, LIU Hao, YANG Hong-xiang, GAO Bo. METHOD AND PRACTICE OF GROUND SUBSTRATE STRUCTURE SURVEY BASED ON GEOMORPHIC DIVISION: A Case Study of Changchun Region[J]. Geology and Resources, 2024, 33(3): 355-364. DOI: 10.13686/j.cnki.dzyzy.2024.03.011

    基于地貌单元分区的地表基质结构调查方法与实践——以长春地区为例

    METHOD AND PRACTICE OF GROUND SUBSTRATE STRUCTURE SURVEY BASED ON GEOMORPHIC DIVISION: A Case Study of Changchun Region

    • 摘要: 地表基质是自然资源调查的基础内容,如何开展这项调查还未形成统一的工作指南. 本文在长春地区地表基质调查工作的基础上,提出基于地貌单元分区的地表基质结构调查方法,并系统总结该区地表基质的空间结构特征. 结果表明: 地表 0~20 cm深度内,河谷冲积平原、山前台地和山间盆谷地区地表基质以土质为主、泥质为辅,低山丘陵区地表基质以岩石为主、砾质为辅; 0~5 m,漫滩和一级阶地区地表基质典型结构分为壤土+砂土和壤土+黏质壤土+黏质壤土两种类型,二级阶地、山前台地和山间盆谷地区地表基质典型结构为灰黑色壤土+黄褐色黏质壤土+黄色黏质壤土,低山丘陵区地表基质典型结构为壤土+砂土(或粗骨土)+岩石; 0~50 m,漫滩和一级阶地区地表基质典型结构为壤土+砂土+岩石,二级阶地区地表基质典型结构为黏质壤土+砂土+岩石,山前台地区地表基质典型结构为黏质壤土+岩石,山间盆谷地区地表基质结构基本与二级阶地或山前台地区相同,低山丘陵区地表基质典型结构为壤土+砂土(或粗骨土)+岩石.

       

      Abstract: Ground substrate is the basic content of natural resources survey, but there is not yet a unified working guideline on how to carry out the work. Based on the ground substrate survey in Changchun region, the paper proposes the method of ground substrate structure survey based on geomorphic unit division, and systematically summarizes the spatial structure characteristics of ground substrate in the area. The results show that the ground substrate at the depth of 0-20 cm below surface is mainly soil and complemented by mud in the valley alluvial plain, piedmont platform and intermountain basin valley area, while mainly rock and supplemented by gravel in low mountain and hilly area. At the depth of 0-5 m below surface, the typical structure of ground substrate in floodplain and first terrace can be divided into two types, i.e., loam+sandy soil and loam+clayey loam+clayey loam, with grayish black loam+yellow brown clayey loam+yellow clayey loam in second terrace, piedmont platform and intermountain basin valley area, and loam+sandy soil(or skeleton soil)+rock in low mountain and hilly area. At the depth of 0-50 m below surface, the typical structure of ground substrate in floodplain and first terrace is loam+sandy soil+rock, with clayey loam+sandy soil+rock in second terrace, and clayey loam+rock in piedmont platform, and loam+sandy soil (or skeleton soil)+rock in low mountain and hilly area. The ground substrate structure in intermountain basin valley area is basically the same as that in second terrace or piedmont platform.

       

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