Amelioration Effects of Soil Fertility and Microbial Responses on a Sandy Loam Soil in Mining Areas Treated with Biochar and Water Jet-Loom Sludge
Aiming at the remediation of soil in mining areas caused by mining activities, pot experiments were conducted using water jet-loom sludge (WJLS) and biochar as soil amendments to evaluate their potential for enhancing soil fertility and microbial communities of degraded mining soils. Six treatments...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-05-01
|
| Series: | Land |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-445X/14/5/1066 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849327015141834752 |
|---|---|
| author | Mengmeng Jiang Xiaofang Zhu Xunzheng Rao Jiu Huang |
| author_facet | Mengmeng Jiang Xiaofang Zhu Xunzheng Rao Jiu Huang |
| author_sort | Mengmeng Jiang |
| collection | DOAJ |
| description | Aiming at the remediation of soil in mining areas caused by mining activities, pot experiments were conducted using water jet-loom sludge (WJLS) and biochar as soil amendments to evaluate their potential for enhancing soil fertility and microbial communities of degraded mining soils. Six treatments with varying WJLS (0%, 5%, 15%) and biochar (0%, 3%) application rates were evaluated. Results showed that WJLS can significantly improve soil organic carbon (OC), total nitrogen (TN), total phosphorus (TP), and microbial biomass, while reducing soil pH and enhancing ryegrass biomass by 1.6–4.1 times. However, a 3% biochar addition may increase the soil sodium absorption ratio (SAR). Moreover, the role of biochar was mainly reflected in the microbiological properties. The combining of WJLS and biochar increased the soil microbial biomass and obviously improved the diversity and abundance of bacteria and fungi in the soil (<i>p</i> < 0.05) after the amendment, especially in the biochar addition groups. At the phylum level, the relative abundance of <i>Proteobacteria</i>, <i>Firmicutes</i>, and <i>Actinobacteriota</i> accounted for 72.4%~84.2% of soil bacteria in all treatments, while the fungi were dominated by <i>Ascomycota</i> (58.30%~95.36%) and <i>Fungi_unclassified</i> (1.26%~38.97%), all of which were significantly related to enhanced soil properties especially OC, TN, TP, and cation exchange capacity (CEC). Overall, WJLS and biochar demonstrate strong potential as sustainable amendments for improving soil fertility and biological quality in the reclamation of mining-affected lands. |
| format | Article |
| id | doaj-art-b9ab07ff1c3247eb90f03fcec20ce9e3 |
| institution | Kabale University |
| issn | 2073-445X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Land |
| spelling | doaj-art-b9ab07ff1c3247eb90f03fcec20ce9e32025-08-20T03:47:59ZengMDPI AGLand2073-445X2025-05-01145106610.3390/land14051066Amelioration Effects of Soil Fertility and Microbial Responses on a Sandy Loam Soil in Mining Areas Treated with Biochar and Water Jet-Loom SludgeMengmeng Jiang0Xiaofang Zhu1Xunzheng Rao2Jiu Huang3School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, ChinaSchool of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, ChinaAiming at the remediation of soil in mining areas caused by mining activities, pot experiments were conducted using water jet-loom sludge (WJLS) and biochar as soil amendments to evaluate their potential for enhancing soil fertility and microbial communities of degraded mining soils. Six treatments with varying WJLS (0%, 5%, 15%) and biochar (0%, 3%) application rates were evaluated. Results showed that WJLS can significantly improve soil organic carbon (OC), total nitrogen (TN), total phosphorus (TP), and microbial biomass, while reducing soil pH and enhancing ryegrass biomass by 1.6–4.1 times. However, a 3% biochar addition may increase the soil sodium absorption ratio (SAR). Moreover, the role of biochar was mainly reflected in the microbiological properties. The combining of WJLS and biochar increased the soil microbial biomass and obviously improved the diversity and abundance of bacteria and fungi in the soil (<i>p</i> < 0.05) after the amendment, especially in the biochar addition groups. At the phylum level, the relative abundance of <i>Proteobacteria</i>, <i>Firmicutes</i>, and <i>Actinobacteriota</i> accounted for 72.4%~84.2% of soil bacteria in all treatments, while the fungi were dominated by <i>Ascomycota</i> (58.30%~95.36%) and <i>Fungi_unclassified</i> (1.26%~38.97%), all of which were significantly related to enhanced soil properties especially OC, TN, TP, and cation exchange capacity (CEC). Overall, WJLS and biochar demonstrate strong potential as sustainable amendments for improving soil fertility and biological quality in the reclamation of mining-affected lands.https://www.mdpi.com/2073-445X/14/5/1066mining soilsoil remediationbiocharwater jet-loom sludgenutrientssoil salinity and alkalinity |
| spellingShingle | Mengmeng Jiang Xiaofang Zhu Xunzheng Rao Jiu Huang Amelioration Effects of Soil Fertility and Microbial Responses on a Sandy Loam Soil in Mining Areas Treated with Biochar and Water Jet-Loom Sludge Land mining soil soil remediation biochar water jet-loom sludge nutrients soil salinity and alkalinity |
| title | Amelioration Effects of Soil Fertility and Microbial Responses on a Sandy Loam Soil in Mining Areas Treated with Biochar and Water Jet-Loom Sludge |
| title_full | Amelioration Effects of Soil Fertility and Microbial Responses on a Sandy Loam Soil in Mining Areas Treated with Biochar and Water Jet-Loom Sludge |
| title_fullStr | Amelioration Effects of Soil Fertility and Microbial Responses on a Sandy Loam Soil in Mining Areas Treated with Biochar and Water Jet-Loom Sludge |
| title_full_unstemmed | Amelioration Effects of Soil Fertility and Microbial Responses on a Sandy Loam Soil in Mining Areas Treated with Biochar and Water Jet-Loom Sludge |
| title_short | Amelioration Effects of Soil Fertility and Microbial Responses on a Sandy Loam Soil in Mining Areas Treated with Biochar and Water Jet-Loom Sludge |
| title_sort | amelioration effects of soil fertility and microbial responses on a sandy loam soil in mining areas treated with biochar and water jet loom sludge |
| topic | mining soil soil remediation biochar water jet-loom sludge nutrients soil salinity and alkalinity |
| url | https://www.mdpi.com/2073-445X/14/5/1066 |
| work_keys_str_mv | AT mengmengjiang ameliorationeffectsofsoilfertilityandmicrobialresponsesonasandyloamsoilinminingareastreatedwithbiocharandwaterjetloomsludge AT xiaofangzhu ameliorationeffectsofsoilfertilityandmicrobialresponsesonasandyloamsoilinminingareastreatedwithbiocharandwaterjetloomsludge AT xunzhengrao ameliorationeffectsofsoilfertilityandmicrobialresponsesonasandyloamsoilinminingareastreatedwithbiocharandwaterjetloomsludge AT jiuhuang ameliorationeffectsofsoilfertilityandmicrobialresponsesonasandyloamsoilinminingareastreatedwithbiocharandwaterjetloomsludge |