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| DOI：10.10352/j.cnki.ggps.20180031 |
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| Correlation Analysis of the Factors that Affect Water and Soil Qualities in Coal Mining Areas |
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ZHANG Kaiyuan, WANG Jin, BI Rutian, LIU Jian
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College of Resources & Environment, Shanxi Agricultural University, Taigu 030801, China
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| Abstract: |
| 【Objective】Coal mining could pollute water and soil and in this paper we analyzed some factors which we believed have detrimental impact on soil and water qualities in coal mining regions. 【Method】 The analysis was based on data collected from 12 coal mines. We used the EViews software to analyze 12 factors which we believe have direct or indirect impact on water and soil qualities. For seven out of the 15 factors, we analyzed them using the nuclear density estimation method and quantified their statistical and correlative characteristics. Combined with the multiple regression analysis, the comprehensive impact of these factors on water and soil qualities in the studied mines was determined, from which we found the main factors. 【Result】 The main factors affecting water consumption in the 12 mines were groundwater flow and total water consumption. The logarithm of the nuclear density curves of the two factors did not have noticeable peaks. The nuclear density curve of groundwater flow varied widely, indicating that there was a difference between the 12 coal mines. The longevity of service and the size of the mines were the main factors responsible for soil deterioration, and the peaks of their logarithmic nuclear density curves were close. The steep nuclear density curve for the longevity of service indicated that the size of the coal mines had a significant impact on soil quality. 【Conclusion】 The main factors impacting water and soil qualities in the studied coal mines are groundwater flow, total water consumption, and longevity of service and size of the mines. |
| Key words: damage of water and land resources; scatter fitting method; nuclear density estimation; multiple regression analysis; influence factor |
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