河北省土壤化学元素的背景值与基准值  

Geochemical Background and Baseline Value of Soil Chemical Elements in Hebei Province

作　　者：张丽婷 成杭新[1] 谢伟明[3] 齐全强 谢晓阳 于文龙 王俊达 ZHANG Li-ting;CHENG Hang-xin;XIE Wei-ming;QI Quan-qiang;XIE Xiao-yang;YU Wen-long;WANG Jun-da(Institute of Geophysical&Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China;China University of Geosciences,Beijing 100083,China;Hebei Institute of Geological Survey,Shijiazhuang 050081,China)

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,廊坊065000 [2]中国地质大学(北京),北京100083 [3]河北省地质调查院,石家庄050081

出　　处：《环境科学》2023年第5期2817-2828,共12页Environmental Science

基　　金：中国地质调查局基础调查项目(200414200007,12120113000800,GZTR20080102,DD20160325-01);河北省财政专项项目([2016]826)。

摘　　要：地球化学背景值和基准值是了解土壤元素地球化学特征的重要参数,而河北省土壤化学元素背景值和基准值的研究程度尚浅.基于此,收集了河北省2004~2018年间的多目标区域地球化学调查和土地质量地球化学调查数据,覆盖范围约占全省陆域面积的71%.以表层和深层土壤数据为基础,利用科学和稳健的中位值-绝对中位差法,计算了河北全省及11个地级市土壤中54项指标[Ag、Al2O3、As、Au、B、Ba、Be、Bi、Br、CaO、Cd、Ce、Cl、Co、Cr、Cu、F、Fe_(2)O_(3)、Ga、Ge、Hg、I、K_(2)O、La、Li、MgO、Mn、Mo、N、Na_(2)O、Nb、Ni、P、Pb、pH、Rb、S、Sb、Sc、Se、SiO_(2)、Sn、Sr、Th、Ti、Tl、U、V、W、Y、Zn、Zr和总碳(TC)、有机碳(Corg)]的背景值、基准值和它们的变化区间,同时还计算了每个指标的自然背景变化率.结果表明,与全国相比,河北省大多数土壤化学元素的背景值、基准值略低,Ba、Br、Cl、MgO、Na_(2)O、P、pH、S、Sr和TC等略高,以CaO高出程度最大;与华北地区相比,54项指标的背景值、基准值差距不大,比值分别在0.83~1.17和0.79~1.19之间.自然背景变化率计算结果显示,河北省Corg、Hg、N、P、S和Se表现为自然背景显著-极显著的增加,说明这些元素受人为因素影响较大,初步分析认为燃煤排放和农用化学品的使用是两个非常重要的诱导因素.Geochemical background and baseline values are important parameters for understanding the geochemical characteristics of soil elements,but the research degree of these two parameters is lacking in Hebei Province.Therefore,data from the multi-purpose regional geochemical survey and land quality geochemical assessment in Hebei Province from 2004 to 2018 were collected,covering approximately 71%of the land area of the whole province.Based on the data of surface soil and deep soil,scientific and robust methods including median value and median absolute deviation were used to calculate the geochemical background values,geochemical baseline values,as well as variation ranges of 54 indexes(Ag,Al2O3,As,Au,B,Ba,Be,Bi,Br,CaO,Cd,Ce,Cl,Co,Cr,Cu,F,Fe_(2)O_(3),Ga,Ge,Hg,I,K_(2)O,La,Li,MgO,Mn,Mo,N,Na_(2)O,Nb,Ni,P,Pb,pH,Rb,S,Sb,Sc,Se,SiO_(2),Sn,Sr,Th,Ti,Tl,U,V,W,Y,Zn,Zr,total carbon(TC),and organic carbon(Corg))in Hebei Province and 11 prefecture-level cities.The change rate in geochemical background for each index was also calculated.The results showed that the geochemical background and baseline values of most soil chemical elements in Hebei Province were lower than those nationwide,but the values of Ba,Br,Cl,MgO,Na_(2)O,P,pH,S,Sr,and TC were higher,with CaO being the highest.Compared with those in north China,there was no significant difference in the geochemical background and baseline values for the 54 indexes,with the ratios of 0.83-1.17 and 0.79-1.19,respectively.Significant changes in the geochemical background for Corg,Hg,N,P,S,and Se were observed in Hebei Province,indicating that these indexes were greatly influenced by human factors.Preliminary analysis suggests that coal burning emissions and agricultural chemical use were two very important inducing factors.

关 键 词：地球化学背景 地球化学基准 土壤化学元素 诱因分析 河北省 

分 类 号：X142[环境科学与工程—环境科学]