Recently, Cheng Wei, associate professor, as the first author and China University of mining and technology as the first unit has published a paper entitled "Geographic distribution of heavy metals and identification of their sources in soils near large, open-pit coal mines using positive matrix factorization" in the Journal of hazard materials (2018 if = 7.65). This paper expounds the latest research results on the impact of material diffusion on soil environment in large coal power bases of grassland mining area.

GIS, Multivariate analysis and PMF model used to study the spatial distribution and contribution of soil heavy metals in grassland mining areas