CAJ | 학술논문

利用时空替代和物理、化学分组的方法比较研究不同经营年限对柑橘果园土壤稳定性有机碳组分的影响，旨为果园土壤固碳增汇技术的研究提供科学依据。结果表明，1954年建植的柑橘园表层土壤总有机碳比1980年建植的柑橘果园土壤提高27.16%，大团聚体内有机碳提高13.59%，微团聚体内有机碳提高80.19%，重组有机碳含量提高29.25%，惰性有机碳含量提高32.00%，黑碳含量提高4.01%。说明随着经营年限的增加，与粘粒相复合的和难降解的稳定性有机碳组分在土壤中逐渐富集下来，有利于提高柑橘园土壤的长期碳汇。
이용시공체대화물리、화학분조적방법비교연구불동경영년한대감귤과완토양은정성유궤탄조분적영향，지위과완토양고탄증회기술적연구제공과학의거。결과표명，1954년건식적감귤완표층토양총유궤탄비1980년건식적감귤과완토양제고27.16%，대단취체내유궤탄제고13.59%，미단취체내유궤탄제고80.19%，중조유궤탄함량제고29.25%，타성유궤탄함량제고32.00%，흑탄함량제고4.01%。설명수착경영년한적증가，여점립상복합적화난강해적은정성유궤탄조분재토양중축점부집하래，유리우제고감귤완토양적장기탄회。
Effect of different cultivation periods on soil stable organic carbon pools and fractions in citrus orchard was investigated to provide scientific basis on the study of orchard soil carbon sequestration by the temporal-spatial substitution method and physical and chemical frac-tionation method. The results showed that the citrus orchard planted in 1954 compared with the citrus orchard planted in 1980, the content of total organic carbon increased by 27.16%, organic carbon content in macro-aggregates increased by 13.59%, organic carbon content in mi-cro-aggregates increased by 80.19%, organic carbon content of heavy fraction increased by 29.25%, resistant organic carbon content in-creased by 32.00%, black carbon content increased by 4.01%. Organic carbon which combined with micro-aggregates was protected, and re-sistant organic carbon and black carbon were recalcitrant organic carbon in soil, this indicated that the stable organic carbon fractions gradu-ally enriched in soil with the increase of growing periods, which was conducive to improve carbon sink in citrus orchard soil.