Phosphorus biogeochemistry regulated by carbonates in soil.
Phosphorus biogeochemistry regulated by carbonates in soil.
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DOI：
10.1016/j.envres.2022.113894
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发表时间：
2022-07
影响因子：
8.3
通讯作者：
Yuanyuan Geng;Shang Pan;Lin Zhang;J. Qiu;Kun He;Hongjian Gao;Zhen Li;D. Tian
中科院分区：
文献类型：
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作者：
Yuanyuan Geng;Shang Pan;Lin Zhang;J. Qiu;Kun He;Hongjian Gao;Zhen Li;D. Tian
磷酸盐是地球上主要的磷(P)来源。磷酸盐控制着土壤中的有效磷，甚至控制着整个生态系统。富碳酸盐土壤有效磷普遍缺乏，表明土壤中磷和碳的生物地球化学关系密切，尽管两者在土壤中的丰度不同。本文从生物和非生物两方面综述了碳酸盐对磷循环的影响。地球化学尺度上的非生物过程包括元素释放、迁移、吸附、解吸、风化、降水等。重点讨论了碳酸盐对磷的吸附和碳酸盐的缓冲性能。生物因子归因于土壤中的各种微生物。作为土壤中最活跃的磷库，微生物倾向于消耗丰富的磷，并将其积累在生物量中。然而，碳酸盐在转化为有机碳后通常被微生物利用。同时，Ca-P相的胞外沉淀显著调节了P在细胞内外的运输。此外，它们通过生物风化和生物矿化，即生物圈和岩石圈之间的强烈相互作用，促进和复杂化了土壤中碳酸盐和磷的周转。在此基础上，我们提出碳酸盐可能对土壤系统的磷供应产生负面影响。本文综述了碳酸盐对磷生物地球化学的调控，为预测碳生物地球化学对长期磷有效性的影响提供了依据。
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, precipitation, 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 significantly 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.