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土壤碳库是陆地生态系统中最大的碳库,在全球碳循环中起着非常重要的作用。本文论述了土壤有机碳对土壤生产力和气候变化的影响。阐述了影响土壤碳含量的各种自然因素和人为因素。对土壤碳素固定以及影响土壤碳素平衡的物理、化学及生物稳定性的各种机理进行了详细评述,阐明了土壤有机碳调控的方法和途径。为控制和调节土壤有机碳储量提供了理论依据。这对今后提高土壤生产力、利用土壤的固碳潜力来降低大气中二氧化碳的浓度和缓解气候变化有着非常重要的意义。
Soil carbon pools are the largest carbon pools in terrestrial ecosystems and play a very important role in the global carbon cycle. This article discusses the impact of soil organic carbon on soil productivity and climate change. The various natural and anthropogenic factors affecting the soil carbon content are expounded. Various mechanisms of soil carbon fixation and the physical, chemical and biological stability affecting soil carbon balance were reviewed in detail, and the methods and approaches for soil organic carbon regulation were clarified. It provides a theoretical basis for controlling and regulating soil organic carbon reserves. This is of great significance to the future increase of soil productivity, use of soil carbon sequestration potential to reduce atmospheric concentrations of carbon dioxide and mitigate climate change.