Soil pH changes induced by contamination by magnesium oxides dust

Response of soil environment factors and microbial communities to phytoremediation with Robinia pseudoacacia in an open‐cut magnesite mine

“…Previous research by Fazekaš, Fazekašová, Adamišin, Huličová, and Benková () demonstrated that the original soil pH value of about five caused by magnesite dust contamination was changed to a pH of about 7.2–8.5. In addition, past research in northern Spain has investigated that the soil pH reaches 9.5 near the magnesite ore calcining plant, and the surface soil pH is most affected (Machín & Navas, ), which was similar to our finding. In addition to the increase in pH, soil nutrient contents, including total C, total N, total P, available P, available N, available K, and soluble Ca 2+ , were the lowest in CK, but the soluble Mg 2+ was overabundant, similar results also discovered in other researches (Raman, Nagarajan, Gopinathan, & Sambandan, ; Liu, Ning, & Zhao, ; Zhou, Gibson, & Zhu, ).…”

“…Magnesite resources in China are mainly distributed in Liaoning and Shandong provinces, accounting for about 95.11% of the Country's total reserves, with Liaoning magnesite reserves being the most abundant with reserves of 2.577 billion tons, mainly concentrated in the areas of Haicheng and Dashiqiao, which is known as the magnesium capital (Yang & Zeng, ), accounting for 85.6% of the Country (Wu, Zhu, Chen, & Su, ) and 20% of the world's total reserves (Zhang, ), respectively. Numerous prior studies have only concerned about the effects of magnesite on soil properties (Machín & Navas, ; Fu et al, ), soil contamination (Wang, Zhao, Zeng, Hu, & Yu, ; Wang et al, ), as well as the accumulation characteristics of several plants to magnesium in Northeast China (Yang, Zhao, et al, ). However, the soil microbial community diversity and composition have insufficiently explored during the phytoremediation in magnesite mine.…”

Secondary enrichment of soil by alkaline emissions: The specific form of anthropo‐geogenic soil degradation near magnesite processing factories and possibilities of land management

“…Feeding cattle with biomass produced on deteriorated areas is not appropriate due to the plants dusting. Consequently, many diseases that threaten animals occur (nervous, respiratory and digestive disorders, diarrhoeas, weight loss, disruption of the sexual cycle, miscarriages) (Hronec et al, 1992; Machín & Navas, 2000). In addition, biomass is of low nutritional value, as in the most affected areas the dominant plants were: E. repens , A. stolonifera , P. distans , C. album , invasive S. canadensis , and recently also P. australis , all known to be invasive in some alkaline sites (Bart, Burdick, Chambers, & Hartman, 2006).…”

The power of magnesium: unlocking the potential for increased yield, quality, and stress tolerance of horticultural crops

“…The amalgamation of effects on root health, nutrient uptake, and general plant vitality can culminate in the reduced yield of horticultural crops (Marschner, 2011). Magnesium, particularly magnesium carbonate, can alter soil pH levels, indirectly influencing the availability and uptake of other essential nutrients (Machin and Navas, 2000). To manage Mg 2+ toxicity, a multi-pronged approach involving reduced Mg input, improved soil drainage, and the use of soil amendments is recommended.…”