黄河下游流域土壤硒元素分布特征及影响因素研究——以山东省聊城茌平地区为例  

Distribution characteristics and influencing factors of soil selenium in the Lower Yellow River Basin:Take Chiping District of Liaocheng Shandong for example

作　　者：常彬 郭忠华 刘根驿 孙彦伟 CHANG Bin;GUO Zhonghua;LIU Genyi;SUN Yanwei(Shandong Geophysical and Geochemical Exploration Institute,Shandong Jinan 250013,China;Shandong Technology Research Center of Geological Exploration,Shandong Jinan 250013,China)

机构地区：[1]山东省物化探勘查院,山东·济南250013 [2]山东省地质勘查工程技术研究中心,山东·济南250013

出　　处：《上海国土资源》2022年第3期93-98,共6页Shanghai Land & Resources

基　　金：山东省矿产资源专项收入转移支付资金项目“山东省茌平县农业生态地球化学调查评价”。

摘　　要：以黄河下游流域的山东省聊城市茌平地区为典型研究区,开展农业生态地球化学调查评价工作,在0~20 cm表层土壤中共采集样品1222件,系统分析了土壤硒元素含量的空间分布特征,并初步探讨了硒元素影响因素。结果表明:茌平地区表层土壤硒元素的分布整体表现为中部、南部高,东高西低的特点,硒元素含量变幅为0.08~1.51 mg/kg,平均值为0.18 mg/kg,属于足硒状态,占整个调查研究区的54.16%。研究区土壤离子活动态硒含量与土壤有机质的含量相关性不明显,与土壤pH值关系密切,离子活动态硒含量在弱碱性条件下较多,生物有效性也更高,有利于农作物对硒元素的吸收。This paper takes Chiping area of the lower Yellow River basin as a typical area to carry out the investigation and evaluation of agricultural ecological geochemistry in Chiping area.A total of 1222 samples were collected from 0-20 cm surface soil.The spatial distribution characteristics of soil selenium content were systematically analyzed,and the influencing factors of selenium were preliminarily discussed.The results showed that the distribution of selenium in the surface soil of Chiping District was generally high in the central and southern regions,and high in the east and low in the west.The content of selenium varied from 0.08 mg/kg to 1.51 mg/kg,with an average of 0.18 mg/kg,belonging to the selenium-rich state,accounting for 54.16% of the total survey area.There is no obvious correlation between the content of soil ionic active Se and soil organic matter in the study area,and it is closely related to soil pH value.The content of ionic active Se is more under weak alkaline conditions,and the bioavailability is higher,which is beneficial to the absorption of selenium by crops.

关 键 词：农业地质 土壤质量 生态地球化学 调查评价 硒元素 分布特征 影响因素 黄河下游 

分 类 号：P632[天文地球—地质矿产勘探] S151.9[天文地球—地质学]