摘要
为查明惠州市金山新城规划区的富硒土地资源,采集了规划区585件表层土壤样品,测试分析了Se元素、有机质和pH指标。结果表明:①规划区表层土壤Se含量范围为0.1~1.48 mg/kg,Se背景值为0.35 mg/kg,是全国土壤的背景值的1.74倍;②规划区富硒土壤资源较为丰富,富硒土壤面积为43.38 km^(2),占规划区总面积的38.21%,土壤硒适量面积为68.15 km^(2),占规划区总面积比达到60.02%;③成土母质类型、有机质和土壤酸碱度(pH)是影响表层土壤Se含量的重要因素,规划区晚白垩世花岗岩成土母质土壤Se元素相对富集,表层土壤有机质和Se元素具有显著的正相关关系,表层土壤pH和Se元素具有显著的负相关关系。
In order to identify selenium-rich land resources in Jinshan New Town,Huizhou City,585 surface soil samples were collected,Se element,organic matter and pH index were tested and analyzed.The results showed as follows:①The Se content of surface soil in the planning area ranged from 0.1 to 1.48 mg/kg,and the Se background value was 0.35 mg/kg,which was 1.74 times that of the national soil background value.②Selenium-rich soil resources were abundant in the planning area,with an area of 43.38 km^(2),accounting for 38.21%of the total area of the planning area,and an area of 68.15 km^(2),accounting for 60.02%of the total area of the planning area.③Parent material type,organic matter and soil pH are important factors affecting Se content in the surface soil.Se elements are relatively enriched in the late Cretaceous granite parent soil in the planned area,and there is a significant positive correlation between surface soil organic matter and Se elements,and a significant negative correlation between surface soil pH and Se elements.
作者
孔琳琳
刘梦翔
KONG Linlin;LIU Mengxiang(No.935 Team,Bureau of Nonferrous Metals Geological Guangdong Province)
出处
《现代矿业》
CAS
2023年第11期41-45,共5页
Modern Mining
关键词
地球化学
背景值
富硒土壤
geochemical characteristics
background value
Selenium-rich soil
