A framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumps
Abstract The primary objective of this study was to develop soil quality indexes (SQIs) to reveal the changes in SQ during the restoration of vegetation in the reclaimed waste dumps of the Hequ open-pit coal mine. The study built an SQI evaluation model for waste dumps based on the soil management a...
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Nature Portfolio
2024-04-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-58930-x |
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| author | Yue Li Hongbao Zhao Jiashun Liu Chen chaonan Guo Yuxuan |
| author_facet | Yue Li Hongbao Zhao Jiashun Liu Chen chaonan Guo Yuxuan |
| author_sort | Yue Li |
| collection | DOAJ |
| description | Abstract The primary objective of this study was to develop soil quality indexes (SQIs) to reveal the changes in SQ during the restoration of vegetation in the reclaimed waste dumps of the Hequ open-pit coal mine. The study built an SQI evaluation model for waste dumps based on the soil management assessment framework. The total data set (TDS) consisted of nine physicochemical property indicators. The selection of the minimum data set (MDS) involved the utilization of principal component analysis (PCA) and Norm values. The SQ was comprehensively evaluated for nine indicators, taking into account the non-linear membership function and the improved Nemerow index. The findings suggested a notable disparity in the SQ between the reclaimed area and the unreclaimed area, yet the overall SQ fell short. In the TDS index system, the organic matter has the highest weight and a greater contribution to the soil quality of the waste dumps. In the MDS indicator system, the weights of organic matter and total nitrogen are both 0.5. According to Nemerow index method, the average SQIN of 5 plots is calculated to be 0.4352 ± 0.194. The average value obtained from TDS is 0.581 ± 0.236, and the average value obtained from MDS is 0.602 ± 0.351. The weighted additive method was employed to compute three SQIs, all of which yielded satisfactory outcomes. And the above evaluation methods indicate that the overall soil quality level of the waste dumps is at a moderate level. The sequence of SQ in various waste dumps was as follows: No.4lower > No.1 > No.2 > No.3 > No.4upper. Specifically, the non-linear membership function indicated that pH, available nitrogen (AN), available phosphorus (AP), surface moisture content (SMC), and bulk density (BD) were crucial in limiting SQIs in total waste dumps. The crucial limiting SQIs in unreclaimed areas were total phosphorus (TP) and total nitrogen (TN). This analysis demonstrates its efficacy in formulating strategies for the SQ evaluation and targeted soil reclamation plans of waste dumps. |
| first_indexed | 2024-04-24T09:53:04Z |
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| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T09:53:04Z |
| publishDate | 2024-04-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj.art-3aedc736a5fd4d27a3867e9acc1119e52024-04-14T11:15:26ZengNature PortfolioScientific Reports2045-23222024-04-0114111310.1038/s41598-024-58930-xA framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumpsYue Li0Hongbao Zhao1Jiashun Liu2Chen chaonan3Guo Yuxuan4School of Energy and Mining Engineering, China University of Mining and Technology-BeijingSchool of Energy and Mining Engineering, China University of Mining and Technology-BeijingCollege of Civil Engineering, Liaoning Technical UniversitySchool of Energy and Mining Engineering, China University of Mining and Technology-BeijingSchool of Energy and Mining Engineering, China University of Mining and Technology-BeijingAbstract The primary objective of this study was to develop soil quality indexes (SQIs) to reveal the changes in SQ during the restoration of vegetation in the reclaimed waste dumps of the Hequ open-pit coal mine. The study built an SQI evaluation model for waste dumps based on the soil management assessment framework. The total data set (TDS) consisted of nine physicochemical property indicators. The selection of the minimum data set (MDS) involved the utilization of principal component analysis (PCA) and Norm values. The SQ was comprehensively evaluated for nine indicators, taking into account the non-linear membership function and the improved Nemerow index. The findings suggested a notable disparity in the SQ between the reclaimed area and the unreclaimed area, yet the overall SQ fell short. In the TDS index system, the organic matter has the highest weight and a greater contribution to the soil quality of the waste dumps. In the MDS indicator system, the weights of organic matter and total nitrogen are both 0.5. According to Nemerow index method, the average SQIN of 5 plots is calculated to be 0.4352 ± 0.194. The average value obtained from TDS is 0.581 ± 0.236, and the average value obtained from MDS is 0.602 ± 0.351. The weighted additive method was employed to compute three SQIs, all of which yielded satisfactory outcomes. And the above evaluation methods indicate that the overall soil quality level of the waste dumps is at a moderate level. The sequence of SQ in various waste dumps was as follows: No.4lower > No.1 > No.2 > No.3 > No.4upper. Specifically, the non-linear membership function indicated that pH, available nitrogen (AN), available phosphorus (AP), surface moisture content (SMC), and bulk density (BD) were crucial in limiting SQIs in total waste dumps. The crucial limiting SQIs in unreclaimed areas were total phosphorus (TP) and total nitrogen (TN). This analysis demonstrates its efficacy in formulating strategies for the SQ evaluation and targeted soil reclamation plans of waste dumps.https://doi.org/10.1038/s41598-024-58930-xOpen-pit coal mineWaste dumpReclamationSoil qualityMinimum data setNemerow index |
| spellingShingle | Yue Li Hongbao Zhao Jiashun Liu Chen chaonan Guo Yuxuan A framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumps Scientific Reports Open-pit coal mine Waste dump Reclamation Soil quality Minimum data set Nemerow index |
| title | A framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumps |
| title_full | A framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumps |
| title_fullStr | A framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumps |
| title_full_unstemmed | A framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumps |
| title_short | A framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumps |
| title_sort | framework for selecting and assessing soil quality indicators for sustainable soil management in waste dumps |
| topic | Open-pit coal mine Waste dump Reclamation Soil quality Minimum data set Nemerow index |
| url | https://doi.org/10.1038/s41598-024-58930-x |
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