Application of Spatial Extraction Model for Soil Environmental Quality Anomaly Regions
An approach for establishment of soil environmental assessment model to evaluate the environmental quality level for soil environmental quality is proposed, in which the GIS and self-organizing map (SOM) techniques are integrated through investigation of soil environmental quality.In this model, self-organizing maps (SOM) and spatial interpolation were applied to cluster a concentration data set of pollutants of soil environmental quality and mapping anomaly region.An application of heavy metal concentrations in soils were surveyed to indicate the status of heavy metal contents and assess environmental quality of soils basing on spatial extraction model.The concentration of 9 metals (Cu, Pb, Zn, Cd, Ni, Cr, Hg, As and Mn) in topsoil were investigated based on samples.The samples were clustered into 3 classes by SOM.According to the concentration level of the samples, the different environmental quality levels were discriminated.The results indicate that SOM as the spatial extraction model was effective to assess the soil environmental quality.
spatial extraction model SOM self-organizing maps heavy metal
Chunlin Yang Ruiping Guo Qingling Yue
Henan Institute of Science and Technology, Xinxiang 453003, China Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China
国际会议
杭州
英文
415-418
2013-01-18（万方平台首次上网日期，不代表论文的发表时间）