ArticleScientific reports2025
Effects of biochar from populus alba × populus berolinensis and pinus sylvestris var. mongolica application on soil physicochemical properties.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study examined the effects of biochar produced from forestry waste (Populus alba×P. berolinensis and Pinus sylvestris var. mongolica branches and leaves) on soil physicochemical properties through a 60-day static incubation experiment under varying pyrolysis temperatures (300, 500, and 700 °C) and application rates (1%, 3%, and 5% (w/w)). Results indicated that biochar application enhanced soil available potassium content and pH to different extents. Notably, the most pronounced effect was observed with a 5% application rate of Populus alba×P. berolinensis leaves biochar pyrolyzed at 700 °C, which increased available potassium by 266.39% and pH by 9.82% compared to the control. At a 5% application rate, biochar produced from Populus alba×P. berolinensis leaves pyrolyzed at 300 °C increased soil ammonium nitrogen content by 49.27% and available phosphorus content by 141.68% compared to the control. Furthermore, biochar improved soil organic Matter content, water content, and aggregation. Specifically, the most significant increases were seen with a 5% application rate of Populus alba×P. berolinensis branch biochar pyrolyzed at 300 °C, raising organic Matter by 320.03% and water content by 30.61% compared to the control. Regarding soil aggregate distribution, a 5% application rate of Pinus sylvestris var. mongolica branch biochar pyrolyzed at 300 °C significantly increased the macroaggregate fraction while reducing microaggregates and silt-clay fractions. In conclusion, the application of forestry waste-derived biochar demonstrates potential for improving soil physicochemical properties, with pyrolysis temperature, feedstock source, and application rate all significantly influencing these improvement effects.
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