TY - JOUR T1 - Responses of Some Soil Bioindicators to the Interaction Between Sugarcane Bagasse Biochar and Salinity Stress in a Cadmium-Polluted Soil TT - پاسخ برخی شاخص‌های زیستی خاک به برهم‌کنش بیوچار باگاس نیشکر و تنش شوری در یک خاک آلوده به کادمیم JF - JSTNAR JO - JSTNAR VL - 26 IS - 1 UR - http://jstnar.iut.ac.ir/article-1-4141-en.html Y1 - 2022 SP - 177 EP - 194 KW - Cadmium toxicity KW - Biochar KW - Salinity stress KW - Soil microbial community KW - Pyrolysis temperature KW - Soil enzyme activity N2 - Biochar as an efficient strategy for the improvement of soil properties and organic waste management may reduce the potential effects of abiotic stresses and increase soil fertility. However, the effects of this organic amendment on soil microbial indicators under combined salinity and pollution have not been studied yet. Therefore, the objective of this study was to evaluate the influence of sugarcane bagasse biochar on some soil bioindicators in a Cd-polluted soil under saline and non-saline conditions. A factorial experiment was carried out with two factors, including NaCl salinity (control, 20 and 40 mM NaCl) and sugarcane bagasse biochar (soils unamended with biochar, amended with uncharred bagasse, 400 oC biochar, and 600 oC) at 1% (w/w) using a completely randomized design. Results showed that salinity increased the mobility of Cd (12-17%), and subsequently augmented its toxicity to soil microorganisms as indicated by significant decreases in the abundance and activities of the soil microbial community. Conversely, sugarcane bagasse biochar application reduced the concentration of soil available Cd (14-18%), increased the contents of soil organic carbon (89-127%), and dissolved organic carbon (4-70%), and consequently alleviated the effect of both abiotic stresses on soil microbial community and enzyme activity. In conclusion, this experiment demonstrated that the application of sugarcane bagasse biochar could reduce the salinity-induced increases in available Cd and mitigate the interaction between salinity and Cd pollution on the measured soil bioindicators. M3 10.47176/jwss.26.1.43561 ER -