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基于福建龙岩地区多目标区域地球化学调查所获得大量高精度和高密度有机碳数据,通过单位土壤碳储量计算方法,分别采用母质类型、地貌类型、生态系统、土地利用类型及土壤类型5种方式,按照0～1.4m,0～1.0m和0～0.2m等3种不同深度来初步探讨福建龙岩地区土壤有机碳储量特征及其影响因素。结果表明,不同类型土壤区的有机碳储量分布存在不均匀性,平均碳密度均存在较大差异,这可能不仅与成土母质、土壤理化性状(如土壤结构、质地、化学成分、土温等)、系统差异(如历史演变、稳定性等)等内在因素有关,还有可能与气候环境条件、海拔高度、水土流失程度、土壤微生物活动强度、植被状况(如植被类型、植被发育等)以及人类活动影响等外在因素有关。得出福建龙岩地区不同深度的有机碳储量:0～0.2m为89254953.05t,0～1.0m为283746254.26t和0～1.4m为347294329.32t;不同深度的平均碳密度:0～0.2m为3980.33t/km~2,0～1.0m为12653.69 t/km~2和0～1.4m为15487.62 t/km~2,高于全国典型地区平均水平,显示出福建龙岩地区具较高的碳储量、较强的碳储能力和良好的碳富集环境。
Based on the multi-target regional geochemical survey in Longyan, Fujian Province, a large amount of high-precision and high-density organic carbon data were obtained. Based on the unit soil carbon storage method, five types of methods were used: parent material type, landform type, ecosystem, land use type and soil type According to the different depths of 0 ~ 1.4m, 0 ~ 1.0m and 0 ~ 0.2m, the characteristics and influencing factors of soil organic carbon storage in Longyan, Fujian Province were preliminary discussed. The results show that the distribution of organic carbon in different types of soils is uneven and the average carbon density is quite different. This may not only be related to the characteristics of soil parent material, soil physical and chemical properties (such as soil structure, texture, chemical composition, soil temperature, etc.) ), System differences (such as historical evolution, stability, etc.), and may be related to climate and environmental conditions, altitude, soil erosion, soil microbial activity intensity, vegetation status (such as vegetation types, vegetation development, etc.) and Human influence and other external factors. The results show that the organic carbon storage at different depths in Longyan area of Fujian Province is 89254953.05t at 0 ~ 0.2m, 283746254.26t at 0 ~ 1.0m and 347294329.32t at 0 ~ 1.4m. The average carbon density at different depths is 3980.33t / km ~ 2,0 ~ 1.0m is 12653.69 t / km ~ 2 and 0 ~ 1.4m is 15487.62 t / km ~ 2, which is higher than the average level of typical areas in the country, indicating that there is a high carbon storage in Longyan, Fujian Province, Strong carbon storage capacity and good carbon-rich environment.