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    李畅,杨忠芳,余涛,牛荣琛,郭茹璨,余保成,夏学齐,于朝阳,曹圆圆. 2024. 干旱区土壤无机碳碳汇作用及其对固碳减排贡献研究进展[J]. 中国地质, 51(4): 1210−1242. DOI: 10.12029/gc20230814001
    引用本文: 李畅,杨忠芳,余涛,牛荣琛,郭茹璨,余保成,夏学齐,于朝阳,曹圆圆. 2024. 干旱区土壤无机碳碳汇作用及其对固碳减排贡献研究进展[J]. 中国地质, 51(4): 1210−1242. DOI: 10.12029/gc20230814001
    Li Chang, Yang Zhongfang, Yu Tao, Niu Rongchen, Guo Rucan, Yu Baocheng, Xia Xueqi, Yu Chaoyang, Cao Yuanyuan. 2024. Carbon sink of soil inorganic carbon in arid regions and its contribution to carbon sequestration and emission reduction: A review[J]. Geology in China, 51(4): 1210−1242. DOI: 10.12029/gc20230814001
    Citation: Li Chang, Yang Zhongfang, Yu Tao, Niu Rongchen, Guo Rucan, Yu Baocheng, Xia Xueqi, Yu Chaoyang, Cao Yuanyuan. 2024. Carbon sink of soil inorganic carbon in arid regions and its contribution to carbon sequestration and emission reduction: A review[J]. Geology in China, 51(4): 1210−1242. DOI: 10.12029/gc20230814001

    干旱区土壤无机碳碳汇作用及其对固碳减排贡献研究进展

    Carbon sink of soil inorganic carbon in arid regions and its contribution to carbon sequestration and emission reduction: A review

    • 摘要:
      研究目的 干旱区土壤无机碳作为全球碳循环举足轻重的组成部分,其碳汇效应不容忽视。
      研究方法 本文查阅了大量国内外干旱区土壤无机碳的相关文献,重点对土壤无机碳汇确认、碳库组成、来源识别,以及碳汇影响因素进行了系统性归纳总结。
      研究结果 干旱区无机碳汇效应伴随着干旱区负通量研究得到确认,但其碳库组成十分复杂,包括了液相碳库与固相碳库。其中液相储库主要以可溶性碳酸盐形式赋存于干旱区地下水体;固相储库则为以固相碳酸盐矿物的形式赋存在土壤中,依据不同成因来源分为成岩碳酸盐与成土碳酸盐,后者又细分为碳质成土碳酸盐与硅质成土碳酸盐。成土碳酸盐中的硅质成土碳酸盐具备真正长期稳定的碳汇效应。无机碳汇的影响因素复杂,包括了自然的气候、土壤性质与深度、生物作用、成土母质、土壤有机质等因素,以及土地利用与土地覆盖、农业管理措施等人为因素。
      结论 干旱区土壤无机碳对全球碳循环研究极其重要,当前研究主要聚焦在土壤无机碳来源分辨,碳汇效应强度确认与固碳潜力量化,以及影响因素明确与人为干预的可能性评估等方面。在实现“双碳目标”驱动下,查清干旱—半干旱地区土壤无机碳源汇过程与影响因素必将是未来的研究热点,也是解决“碳失汇”科学难题的突破点,极大地推动全球碳循环研究。

       

      Abstract:
      This paper is the result of environmental geological survey engineering.
      Objective As a pivotal component of the global carbon cycle, the role of soil inorganic carbon in arid regions as a carbon sink cannot be ignored.
      Methods This paper reviewed a large amount of literature related to soil inorganic carbon in arid regions at home and abroad, and focused on the confirmation of soil inorganic carbon carbon sink, carbon pool composition, source identification, and carbon sink influencing factors in a systematic summary.
      Results The role of inorganic carbon carbon sinks in arid regions was confirmed along with the study of negative fluxes in arid regions, but the composition of its carbon pool is very complex, including liquid−phase carbon pools and solid−phase carbon pools. The liquid−phase reservoir is mainly in the form of Dissolved Inorganic Carbon in the groundwater of the arid regions; the solid−phase reservoir is the solid−phase Soil Inorganic Carbon in the soil profile, which is divided into Lithogenic Carbonate and Pedogenic Carbonate according to different genetic sources, and the latter is subdivided into carbonaceous soil−forming carbonate and silicic soil−forming carbonate . The SPC in PC has a real long−term stable carbon sink. The factors influencing inorganic carbon sinks are complex, including natural factors: climate, soil properties and depth, biological effects, soil−forming parent material, soil organic matter, etc.; anthropogenic factors: land use and land cover, agricultural management measures (irrigation and fertilization), etc.
      Conclusions Soil inorganic carbon in drylands is extremely important for global carbon sequestration, and current research focuses on the identification of soil inorganic carbon sources, confirmation of carbon sink strength and quantification of carbon sequestration potential, as well as the clarification of influencing factors and assessment of the possibility of human intervention. Driven by the goal of achieving carbon peaking and carbon neutrality goals, the identification of soil inorganic carbon sources and influencing factors will be a research hotspot in the future within the global region, especially in arid and semi−arid regions. It will be a breakthrough point to solve the scientific problem of "Missing carbon sink", which will greatly promote the research of Global Carbon Cycle.

       

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