Pedosphere 21(1): 98--106, 2011
ISSN 1002-0160/CN 32-1315/P
©2011 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Soil quality degradation in a magnesite mining area |
FU Sha-Sha1,2, LI Pei-Jun1 , FENG Qian1,2, LI Xiao-Jun1, LI Peng2,3, SUN Yue-Bing1,2 and CHEN Yang1,4 |
1 Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016 (China);
2 Graduate University of the Chinese Academy of Sciences, Beijing 100049 (China);
3 Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002 (China);
4 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China) |
| ABSTRACT |
| Fourteen soil properties in 17 sampling sites were analyzed to study the soil degradation in a magnesite mining area in Haicheng City, Northeast China. Such areas have hitherto received little attention. The current practices of magnesite mining in this area resulted in degradation of soil quality and specifically led to an increase in soil pH, the ratio of magnesium to calcium, bulk density, clay dispersibility, total magnesium and equivalent calcium carbonate and a decrease in surface soil porosity and available phosphorous. The soil quality in the areas affected by intensive mining activity was obviously worse than that of areas far away from the mine. Four factors were identified and "magnesium factor", "pH factor" and "fertility factor", involving 13 soil properties, explained 82% of the total variance in the entire data set. Discriminant analysis showed that the total magnesium, water-soluble calcium and available phosphorous were the most sensitive indicators for soil quality. |
| Key Words: discriminant analysis, factor analysis, magnesite processing, soil degradation |
| Citation: Fu, S. S., Li, P. J., Feng, Q., Li, X. J., Li, P., Sun, Y. B. and Chen, Y. 2011. Soil quality degradation in a magnesite mining area. Pedosphere. 21(1): 98-106. |
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