摘要
利用轻型人力钻采集土壤剖面样品,利用X-荧光光谱仪测得土壤样品中的重金属含量,研究黄河中段河流阶地土壤钴元素的分布特征及污染情况.结果表明:黄河中段河流阶地土壤中除钴元素以外,其它重金属元素均未超过土壤背景值,土壤中钴元素严重超标.河流阶地土壤中钴元素在30 cm以下土层中主要受到成土母质和成壤过程影响,而30 cm以上土层中的钴元素除受到成土母质和成壤过程影响外,剧烈的人类活动及植物作用是影响其含量的最主要因素.黄河中段河流阶地土壤中钴元素的含量与土壤粒度中砂粒含量成正相关,二级阶地远离山丘样点(B样点)和一级阶地(C样点)土壤粒度以砂粒为主,土壤中钴含量高.而二级阶地靠近山丘样点(A样点)以粘粒和粉粒为主,土壤中钴含量较低.黄河中段河流阶地土壤中钴元素均处于重度污染状态且B、C样点植被已受到钴污染的影响.
In order to analysis the Cobalt content characteristics and pollution assessment on river terrace in the middle of Yellow River,the soil profile samples were collected by light manpower drilling,and soil heavy metals were measured by X-ray fluorescence spectrometer.The results showed that heavy metals were not exceed except for Cobalt compared to background value of the soil.In the soil layer below 30 cm,Cobalt content was mainly affected by the parent material and the process of soil formation below the 30 cm soil layer.However,the Cobalt content above 30 cm soil layer not only affected by parent material and soil formation,but also affected by intense human activity and plant action.The content of Cobalt in the terrace soil of the Middle Yellow River is positively correlated with the content of soil sand.The soil grain size of the B sample point(second terrace:far from the hill)and the C sample point(first terrace)were mainly sand,and the content of cobalt in the soil is higher.However,the A sample point(second terrace:near from the hill)was mainly composed of clay and silt,and the content of Cobalt in the soil was lower.The Cobalt element in the soil of the river terrace of middle Yellow River was heavily polluted and the vegetation in sample B and C has been affected by Cobalt pollution.
作者
戴燕燕
钞锦龙
蔡昕
张鹏飞
DAI Yanyan;CHAO Jinlong;CAI Xin;ZHANG Pengfei(School of Geography Science,Taiyuan Normal University,Jinzhong 030619,China)
出处
《太原师范学院学报（自然科学版）》
2020年第2期78-83,共6页
Journal of Taiyuan Normal University:Natural Science Edition
基金
山西省高等学校科技创新项目“山西省设施连作对番茄农艺性状及品质的影响研究”(2019L0781)
山西省高等学校哲学社会科学研究项目“乡村振兴背景下太行山西麓山区旱井水资源利用研究”(2019W116)
山西省哲学社会科学规划课题“农业供给侧改革背景下山西省山区旱井水资源利用研究”(2019B375)
太原师范学院“天生绿生态农业创新创业基地”项目。
关键词
河流阶地
土壤钴元素
垂直分布
水平分布
污染评价
river terrace
soil Cobalt element
vertical distribution
horizontal distribution
pollution assessment
