矿区复垦土壤重金属含量分布与光谱特征研究——以徐州市柳新矿区为例

Research on the distribution and spectral characteristics of heavy metal content in reclaimed soil of mining areas:A case study of Liuxin mining district in Xuzhou city

以徐州柳新矿区复垦土壤为研究对象,采用传统采样检测方法分析了Cd,Cu,Pb,Zn,Cr等重金属元素在土壤中的含量,借助ISI921VF系列野外地物光谱辐射计和IR981短波红外地物光谱仪野外测量样点土壤的光谱,提取其光谱特征,并对光谱特征参数与土壤中重金属含量进行相关性分析,建立了利用土壤光谱反射率估算土壤重金属含量的预测模型.结果表明:通过分析土壤反射光谱特征能间接反映土壤重金属含量.从而实现土壤重金属含量的间接测定,为土壤重金属污染的调查与监测提供一种简单、快速的测定方法.

Taking Liuxin reclamation district as the research object, heavy metals such as Cd, Cu, Pb, Zn, Cr concentrations and distribution in soil and wheat were studied, with ISI921VF series field spectral measurements and IR981 short wave infrared spectral measurements to ob- tain the spectral of soil. By extracting the spectral characteristics of soil, the relationship be- tween heavy metal contents and spectral characteristics was statistically analyzed. On the basis of correlation between heavy metals and spectral reflectance, spectral reflectance of soil meas- ured outside was used to establish a prediction model of heavy metal contents in soil. The re- sults show that the contents of heavy metals in soil can be reflected through analyzing soil spec- tral reflectance characteristics. It indicates that remote sensing can realize detecting heavy met- al contents indirectly, and can be an alternative solution method of convenience and rapid meth- od to investigate and monitor the heavy metal pollution in soil.