山东半岛蓝色经济区土壤地球化学基准值与背景值

Geochemical Reference Value and Background Value of Soil in Blue Economic Zone of Shandong Peninsula

山东半岛蓝色经济区土壤地球化学调查是按1km2采集1件表层土壤样品,4km2组合成1件分析样品,4km2采集1件深层土壤样品,16km2组合成1件分析样品,测试Ag,As,Au,B,Ba,Be,Bi,Br,C等54项指标。对这些指标的地球化学基准值和背景值进行研究,认为表层、深层土壤中除与金及多金属成矿作用有关的Ag,Au,Hg,Mo,S,Sb等元素和Cl,Br,I等卤族元素空间变异性大外,大部分元素分布均匀,且表层土壤与深层土壤元素分布具有相似性。统计了青岛、东营、烟台、潍坊、日照、威海等6市的土壤地球化学基准值和背景值,发现6市绝大部分元素基准值和背景值相对稳定,与半岛蓝色经济区基本一致,仅部分指标基准值和背景值变化较大;各市土壤地球化学基准值主要受地质背景控制,而土壤地球化学背景值主要受地质背景和后期人类活动等多层因素控制。

On the basis of collecting one surficial sample in each 1km2 and combining them into one sample in each 4km2 ,collecting one deep sample in each 4km2 and combining them into one analyzing sample in each 16km2 ,geochemical survey of soil in the blue economic zone of Shandong peninsula has been carried out.In this survey,54 elements and ratios are determined,such as Ag,As,Au,B,Ba,Be,Bi,Br,C and so on.Geochemical reference value and background value of these indicators have been studied.Majority ele-ments evenly distributes in surface or deep soil except Ag,Au,Hg,Mo,S,Sb and other elements which associated with gold and polymetallic mineralization and the halogen element such as Cl,Br,I.The distri-bution of elements in surface soil or deep soil has the similarity.The geochemical reference value and back-ground value of soil in six cities,such as Qingdao,Dongying,Yantai,Weifang,Rizhao and Weihai have been counted.It is found that the value of most elements in six cities has relative stability,which consist-ent with the blue economic zone of Shandong peninsula except the reference value and background value of partial indicators changes in the larger.All the geochemical reference values of soil were mainly controlled by geological background,and the geochemical background value of soil was mainly affected by multi fac-tors,such as geological background,human activities and so on.