Journal
ENVIRONMENTAL RESEARCH
Volume 214, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2022.113894
Keywords
Carbonate; Phosphate; Soil; Microorganisms; Sorption; Biogeochemistry
Funding
- National Natural Science Foundation of China [42007030]
- Program at the Department of Natural Resources of Anhui Province [2021-K-11]
- Fundamental Research Funds for the Central Universities [KYCYXT2022004]
- Research project of higher education reform in Jiangsu Province [2021JSJG031]
- Jiangsu middle and late mature garlic industrial cluster construction: Garlic mechanical intelli- gent operation technology and demonstration and promotion of green production technology
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This study reviews the influences of carbonates on the phosphorus (P) cycle in soil, exploring both abiotic and biotic pathways. It suggests that carbonates may negatively affect P supply in soil and contribute to the complex turnover of carbonates and P through bioweathering and biomineralization.
Phosphates are the dominant phosphorus (P) source on Earth. The phosphates govern available P in soil, or even the complete ecosystem. The common deficiency of available P in carbonate-enriched soils suggests the tight correlation between P and C biogeochemistry, although the two elements have diverse abundance in soil. The influences of carbonates on P cycle were reviewed in this study, via both abiotic and biotic pathways. The abiotic processes at geochemical scale include element release, transport, sorption, desorption, weathering, precipita-tion, etc. The sorption of P on carbonate and buffering ability of carbonates were particularly addressed. Biotic factors are ascribed to various microorganisms in soil. As the most active P pool in soil, microorganisms prefer to consume abundant P, and then accumulate it in their biomass. Carbonates, however, are usually utilized by microorganisms after conversion to organic C. Meanwhile, extracellular precipitation of Ca-P phases signifi-cantly regulates the transportation of P in/out the cells. Moreover, they boost and complexify both carbonates and P turnover in soil via bioweathering and biomineralization, i.e., the intense interactions between biosphere and lithosphere. Based on this review, we proposed that carbonates may negatively affect P supply in soil system. This comprehensive review regarding the regulation by carbonates on P biogeochemistry would shed a light on predicting long-term P availability influenced by C biogeochemistry.
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