全国地球化学基准网建立与土壤地球化学基准值特征

发布时间：2018-06-03 03:32

本文选题：中国 + 地球化学　；参考：《中国地质》2016年05期

【摘要】：全球一致性和权威性地球化学观测数据是资源与环境评价的定量标尺。中国实施的"全国地球化学基准计划"作为"全球地球化学基准计划"的一部分,于2008—2014年实施,建立了覆盖全国的地球化学基准网。按照1∶20万图幅为网格单元,在全国1600个网格单元中,共部署3382个汇水域采样基准点,每个基准点同时采集了表层和深层土壤样品,共计采集6617件样品,使用高精度分析技术和严格的质量控制,分析了81个地球化学指标。本文首次给出了全国土壤81个指标地球化学基准值数据,初步阐释了地球化学基准值数据和空间分布特征与地质背景、成矿作用、表生作用以及人类活动的关系。
[Abstract]:Global consistency and authoritative geochemical observation data are quantitative scales for resource and environmental assessment. As part of the Global Geochemical baseline Plan, the National Geochemical baseline Plan was implemented in China from 2008 to 2014, and a nationwide geochemical baseline network was established. According to the scale of 1: 200000, a total of 3 382 sampling datum points were deployed in 1: 200 grid units in the whole country. Each reference point collected both surface and deep soil samples, a total of 6617 samples were collected. Using high precision analysis technique and strict quality control, 81 geochemical indexes are analyzed. In this paper, 81 national soil geochemical datum data are given for the first time, and the relationships between geochemical datum data and spatial distribution characteristics and geological background, mineralization, epigenesis and human activities are preliminarily explained.
【作者单位】：国土资源部地球化学探测技术重点实验室中国地质科学院地球物理地球化学勘查研究所;联合国教科文组织全球尺度地球化学国际研究中心;
【基金】：中国地质调查项目(DD20160116,12120115067301) 行业基金项目(Sino Probe-04;201011053)联合资助~~
【分类号】：S153

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