地质与资源2026，Vol.35Issue(2)：237-244,222,9.DOI:10.13686/j.cnki.dzyzy.2026.02.012
科尔沁沙地双辽地区地表基质化学元素垂向分布特征及含量等级
Vertical distribution and content levels of chemical elements in the ground substrate in Shuangliao area of Horqin sandy land
摘要
Abstract
This study systematically investigates the vertical distribution characteristics of major,mineral,beneficial,and harmful elements in the top 50 m of borehole SLZK04 in Shuangliao area,Jilin Province.The results reveal that the contents of Al2O3,CaO,MgO,TiO2,P2O5,and Fe2O3 exhibit a negative correlation with SiO2 content,which is closely associated with soil texture.The distribution patterns of mineral elements generally show higher concentrations in oxidizing weathering and transport environments,whereas lower concentrations are found in reducing lacustrine sedimentary conditions.The distribution of beneficial elements is also constrained by sedimentary environments,while harmful elements maintain consistently low levels throughout the borehole.Quality assessment of chemical elements in the whole soil profile indicates that the average CaO content falls into Grade Ⅱ(relatively abundant),MgO into GradeⅣ(relatively deficient),Fe2O3,Mn,and P into Grade V(deficient),K into Grade Ⅲ(moderate),and Se,I,and F into Grade V(deficient).The soil environmental quality is classified as Class Ⅰ(clean).关键词
地表基质/矿质元素/有益元素/有害元素/地球化学/科尔沁沙地/吉林省Key words
ground substrate/mineral element/beneficial element/harmful element/geochemistry/Horqin sandy land/Jilin Province分类
天文与地球科学引用本文复制引用
高远,裴阳,秦天,侯红星,周业泽,关雨男,朱志阳..科尔沁沙地双辽地区地表基质化学元素垂向分布特征及含量等级[J].地质与资源,2026,35(2):237-244,222,9.基金项目
中国地质调查局自然资源综合调查项目"辽河平原梨树地区黑土地地表基质层调查"(DD20211590). （DD20211590）
