Combination of Biochar and Functional Bacteria Drives the Ecological Improvement of Saline-Alkali Soil
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Updated: Aug 13, 2025

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites
Published on: November 28, 2014
Shuang Liang1, Sheng-Nan Wang1, Lu-Lu Zhou1
1Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, China.
Abstract:
The addition of functional bacteria (FB) is low-cost and is widely applied in saline-alkali soil remediation, which may gradually become ineffective due to inter-specific competition with indigenous bacteria. To improve the adaptability of FB, the target FB strains were isolated from local saline-alkali soil, and the combined effects of FB and biochar were explored. The results showed that FB isolated from local soil showed better growth than the purchased strains under high saline-alkali conditions. However, the indigenous community still weakened the function of added FB. Biochar addition provided a specific niche and increased the relative abundance of FB, especially for Proteobacteria and Bacteroidota. As a result, the co-addition of 10% biochar and FB significantly increased the soil available phosphorus (AP) by 74.85% and available nitrogen (AN) by 114.53%. Zea Mays's growth (in terms of height) was enhanced by 87.92% due to the decreased salinity stress and extra nutrients provided.
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