Geochemical Characteristics of Typical Karst Soil Profiles in Anhui Province, Southeastern China
The geographical distributions of Cd and several other heavy metals (HMs) (Hg, Cu, Ni, Pb, Zn, Cr, As, Co, and V) were characterized in 90 (<i>p</i> > 0.05) terra rossa samples across the Anhui karst area. Significant enrichment of HM was observed in this soil, mainly associated with...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-04-01
|
| Series: | Agronomy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4395/13/4/1067 |
| _version_ | 1827746244592664576 |
|---|---|
| author | Wenbing Ji Yuanyuan Lu Min Yang Jian Wang Xiaoyu Zhang Caiyi Zhao Bing Xia Yunjin Wu Rongrong Ying |
| author_facet | Wenbing Ji Yuanyuan Lu Min Yang Jian Wang Xiaoyu Zhang Caiyi Zhao Bing Xia Yunjin Wu Rongrong Ying |
| author_sort | Wenbing Ji |
| collection | DOAJ |
| description | The geographical distributions of Cd and several other heavy metals (HMs) (Hg, Cu, Ni, Pb, Zn, Cr, As, Co, and V) were characterized in 90 (<i>p</i> > 0.05) terra rossa samples across the Anhui karst area. Significant enrichment of HM was observed in this soil, mainly associated with the weathering of Cd-enriched carbonate rocks. Then, this enrichment was developed in 31 profiles. Our investigations revealed pedogenic processes as the dominant factors accounting for the enrichment of Hg, Cu, Ni, As, Co, and V. We also observed that all soil samples had a silty clay texture, with a pH scope of 4.08–8.04 and a median value of 6.50. In addition, the soil samples had relatively high saturation, with basic cations over 6.68%. The enrichment of the HMs based on their distinct factors were as follows: Cd (3.92) > As (2.55) > Zn (1.62) > Ni (1.50) > Cu (1.47) > Pb (1.47) > V (1.43) > Cr (1.23) > Co (1.19) > Hg (1.12). Finally, terra rossa samples derived from carbonate rocks were categorized as Cambisols, Luvisols, and Regosols. The soil profiles of Cambisols and Luvisolsis were less developed, so the HM concentrations were relatively low. The Regosols profile contained the highest total Cd concentration and exhibited a higher capacity to immobilize Cd compared with other soil profiles. Regosols are also characterized by high pH values (scope of 7.05 to 8.22, with an average value of 7.56). The contents of HM also exhibited minor changes across the Regosol, Cambisol, and Luvisol profiles, implying that the karst development degrees of weathering in Anhui were relatively low. |
| first_indexed | 2024-03-11T05:19:43Z |
| format | Article |
| id | doaj.art-3891b6b516f349f1b649ab070411028f |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T05:19:43Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-3891b6b516f349f1b649ab070411028f2023-11-17T17:57:07ZengMDPI AGAgronomy2073-43952023-04-01134106710.3390/agronomy13041067Geochemical Characteristics of Typical Karst Soil Profiles in Anhui Province, Southeastern ChinaWenbing Ji0Yuanyuan Lu1Min Yang2Jian Wang3Xiaoyu Zhang4Caiyi Zhao5Bing Xia6Yunjin Wu7Rongrong Ying8Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaNanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, ChinaThe geographical distributions of Cd and several other heavy metals (HMs) (Hg, Cu, Ni, Pb, Zn, Cr, As, Co, and V) were characterized in 90 (<i>p</i> > 0.05) terra rossa samples across the Anhui karst area. Significant enrichment of HM was observed in this soil, mainly associated with the weathering of Cd-enriched carbonate rocks. Then, this enrichment was developed in 31 profiles. Our investigations revealed pedogenic processes as the dominant factors accounting for the enrichment of Hg, Cu, Ni, As, Co, and V. We also observed that all soil samples had a silty clay texture, with a pH scope of 4.08–8.04 and a median value of 6.50. In addition, the soil samples had relatively high saturation, with basic cations over 6.68%. The enrichment of the HMs based on their distinct factors were as follows: Cd (3.92) > As (2.55) > Zn (1.62) > Ni (1.50) > Cu (1.47) > Pb (1.47) > V (1.43) > Cr (1.23) > Co (1.19) > Hg (1.12). Finally, terra rossa samples derived from carbonate rocks were categorized as Cambisols, Luvisols, and Regosols. The soil profiles of Cambisols and Luvisolsis were less developed, so the HM concentrations were relatively low. The Regosols profile contained the highest total Cd concentration and exhibited a higher capacity to immobilize Cd compared with other soil profiles. Regosols are also characterized by high pH values (scope of 7.05 to 8.22, with an average value of 7.56). The contents of HM also exhibited minor changes across the Regosol, Cambisol, and Luvisol profiles, implying that the karst development degrees of weathering in Anhui were relatively low.https://www.mdpi.com/2073-4395/13/4/1067karst areasAnhui Provinceheavy metals (HM)geochemical characteristicsenrichment factors |
| spellingShingle | Wenbing Ji Yuanyuan Lu Min Yang Jian Wang Xiaoyu Zhang Caiyi Zhao Bing Xia Yunjin Wu Rongrong Ying Geochemical Characteristics of Typical Karst Soil Profiles in Anhui Province, Southeastern China Agronomy karst areas Anhui Province heavy metals (HM) geochemical characteristics enrichment factors |
| title | Geochemical Characteristics of Typical Karst Soil Profiles in Anhui Province, Southeastern China |
| title_full | Geochemical Characteristics of Typical Karst Soil Profiles in Anhui Province, Southeastern China |
| title_fullStr | Geochemical Characteristics of Typical Karst Soil Profiles in Anhui Province, Southeastern China |
| title_full_unstemmed | Geochemical Characteristics of Typical Karst Soil Profiles in Anhui Province, Southeastern China |
| title_short | Geochemical Characteristics of Typical Karst Soil Profiles in Anhui Province, Southeastern China |
| title_sort | geochemical characteristics of typical karst soil profiles in anhui province southeastern china |
| topic | karst areas Anhui Province heavy metals (HM) geochemical characteristics enrichment factors |
| url | https://www.mdpi.com/2073-4395/13/4/1067 |
| work_keys_str_mv | AT wenbingji geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina AT yuanyuanlu geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina AT minyang geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina AT jianwang geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina AT xiaoyuzhang geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina AT caiyizhao geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina AT bingxia geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina AT yunjinwu geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina AT rongrongying geochemicalcharacteristicsoftypicalkarstsoilprofilesinanhuiprovincesoutheasternchina |