河南省土壤环境监测背景点位布设参考区域划分研究  

Reference area division for background point arrangement in soil environmental monitoring in Henan Province

作　　者：解庆锋[1,2,3] 周小果 王振峰[4] 马振波 李胜昌 张得恩[1,3] 司法祯 XIE Qing-Feng;ZHOU Xiao-Guo;WANG Zhen-Feng;MA Zhen-Bo;LI Sheng-Chang;ZHANG De-En;SI Fa-Zhen(Henan Institute of Geological Survey,Zhengzhou 450001,China;Henan Institute of Geological Sciences,Zhengzhou 450001,China;Henan Geochemical Ecological Restoration Engineering Research Center,Zhengzhou 450001,China;Henan Province Rock and Mineral Testing Center,Zhengzhou 450001,China)

机构地区：[1]河南省地质调查院,河南郑州450001 [2]河南省地质科学研究所,河南郑州450001 [3]河南省地球化学生态修复工程技术研究中心,河南郑州450001 [4]河南岩石矿物测试中心,河南郑州450001

出　　处：《物探与化探》2021年第5期1164-1170,共7页Geophysical and Geochemical Exploration

基　　金：河南省土壤污染防治专项资金项目“河南省土壤生态环境质量监测点位优化”(2019—2020);中央地质勘查基金项目“南阳盆地河南工作区1∶25万土地质量地球化学调查”(IHEGDD2016065,IHEGDD2018051)。

摘　　要：以河南省1:20万区域地球化学水系沉积物测量和河南省1:25万土地质量地球化学调查数据为基础,结合河南省土壤母质图,按照地球化学背景的定义,应用统计学方法,通过迭代剔除异值离群数据,按均值±2倍离差分别求出不同母质类型区域内的Cd、As、Pb、Hg、Cr等5种重金属的背景区间值。根据每个元素的背景区间值,分别抽取数据点位,利用ArcGIS软件对数据点位位置进行网格提取,形成河南省背景点位布设参考区域,为河南省土壤生态环境监测背景点位优化提供了技术依据。This study aims to determine the reference areas for the arrangement of background points in soil environment monitoring in Henan Province.Firstly,based on the data of 1:200,000 regional geochemical stream sediment surveys and 1:250,000 land quality geochemical surveys of Henan Province as well as the map of soil parent materials of Henan Province,outliers were eliminated using iteration and a statistical method according to the definition of geochemical background.Then the background interval values of five heavy metals(i.e.,Cd,As,Pb,Hg,and Cr)in parent materials of different types were calculated according to the±2 deviationof the mean.Finally,data points were extracted according to the background interval values of each element and then the grid of the data points was extracted using the software ArcGIS.In this way,the reference areasfor the background points layout in Henan Province were formed.This study will provide technical bases for the optimization of background points in the soil environment monitoring in Henan Province.

关 键 词：土壤环境监测 背景点位 区域划分 

分 类 号：X833[环境科学与工程—环境工程]