Ma et al. (2026): Enhanced Rock Weathering Increases Soil Carbon but Reduces Soil Organic Carbon Stability in Subtropical Croplands

Lei Ma, Manyi Li, Hualian Zhang, Zheng Mao, Shuqing Zhang, Chen Wang, Cheng Li, Shiwei Liu and Pujia Yu, IN: Agriculture, https://doi.org/10.3390/agriculture16030338

Enhanced rock weathering is regarded as a promising carbon dioxide removal method because of its potential to sequester soil inorganic carbon (SIC). However, the influence of enhanced rock weathering on changes in soil organic carbon (SOC) content, fractions and stability remains poorly understood. A randomized block experiment design employing five basalt addition rates (0 (CK), 2.5, 5, 10 and 20 kg·m⁻²) and four replicates was designed to investigate the influences of basalt addition on SOC and SIC content and stocks, SOC fractions and SOC stability in subtropical cropland, where Zea mays L. and Brassica juncea (L.) Czern were annually rotated. Soil samples were collected from depths of 0–15 cm and 15–30 cm one year after the addition of basalt.

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