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目前,土壤有机碳储量日益成为全球变化和陆地生态系统碳循环研究的前沿和热点问题,其中土壤有机碳又是全球碳循环中最为复杂、受全球气候变化影响最大的部分。本研究结合土壤有机碳储量研究的国内外报道,介绍了陆地生态系统中土壤有机碳库特点及研究意义,总结了当前土壤碳储量研究的5种主要方法(土壤类型法、植被类型与生命地带法、GIS估算法、模型估算法、相关关系统计法)及其各自特点、存在的问题。同时,通过土壤理化特性、气候条件、CO2浓度、土地利用、土地管理等5个方面简要评述了各种因素对土壤碳的积累与循环的影响,并对土壤有机碳储量今后的研究方向进行了展望。
At present, soil organic carbon storage is increasingly becoming a frontier and hot issue in global change and terrestrial ecosystem carbon cycle research. Soil organic carbon is also the most complicated part of the global carbon cycle and the most affected by global climate change. Based on the reports of soil organic carbon storage at home and abroad, this study introduces the characteristics and research significance of soil organic carbon pool in terrestrial ecosystems, and summarizes the five main methods of soil carbon storage (soil type method, vegetation type and life zone Method, GIS estimation method, model estimation method and correlation statistics method) and their respective characteristics and existing problems. At the same time, the effects of various factors on the accumulation and circulation of soil carbon were briefly reviewed from five aspects of soil physical and chemical characteristics, climatic conditions, CO2 concentration, land use and land management. The future research directions of soil organic carbon storage Outlook.