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| 不同经营年限柑橘果园土壤稳定性有机碳比较 |
| Effect of Different Cultivation Periods on Soil Stable Organic Carbon Pool in Citrus Orchard |
| 投稿时间：2014-12-19 |
| DOI：10.13254/j.jare.2014.0362 |
| 中文关键词: 经营年限 柑橘果园 土壤 稳定性有机碳 组分 |
| 英文关键词: cultivation periods citrus orchard soil stable organic carbon fractions |
| 基金项目:福建省科技项目(2014R1017-3);国家科技支撑计划课题(2012BAD14B15,2012BAD14B03);农业部福州农业环境科学观测实验站项目 |
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| 中文摘要: |
| 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豫,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。 |
| 英文摘要: |
| 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 fractionation 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 micro-aggregates increased by 80.19%, organic carbon content of heavy fraction increased by 29.25%, resistant organic carbon content increased by 32.00%, black carbon content increased by 4.01%. Organic carbon which combined with micro-aggregates was protected, and resistant organic carbon and black carbon were recalcitrant organic carbon in soil, this indicated that the stable organic carbon fractions gradually enriched in soil with the increase of growing periods, which was conducive to improve carbon sink in citrus orchard soil. |
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