河南商丘地区土壤元素基准值与背景值研究

Study on Soil Element Reference Value and Background Value in Shangqiu Region of Henan Province

中国地质调查局2013—2015年对河南商丘地区部署开展了1∶25万多目标区域地球化学调查,结果表明:河南商丘地区土壤元素基准含量普遍偏低;不同土壤类型背景值差异明显;区内大部分地区与农业生产有关的营养元素P等偏高及重金属Cr、Hg低,适合发展绿色农业;受人类活动影响,城市周边P、Cd、S、Br、Hg、N、Se、Corg等表生富集作用明显。

From 2013 to 2015,the China Geological Survey conducted a geochemical survey of 1 ∶250 000 multitarget region in Shangqiu Area of Henan Province.The results showed that the soil element reference content in Shangqiu Area of Henan Province was generally low,the background values of different soil types were significantly different.The nutrient elements related to agricultural production were high in P and low in heavy metals, such as Cr and Hg, which were suitable for the development of green agriculture.Under the influence of human activities, the supergene enrichment effects of P, Cd, S, Br, Hg, N, Se, Corg around the city were obvious.