不同功能区城市林业土壤黑碳含量及来源——以南京市为例

发布时间：2017-12-31 13:05

  本文关键词：不同功能区城市林业土壤黑碳含量及来源——以南京市为例　出处：《生态学报》2016年03期 　论文类型：期刊论文

  更多相关文章： 城市林业土壤 黑碳 含量 来源 南京市

【摘要】：由于城市化过程中人为活动的影响,城市林业土壤的性质发生了很大变化。城市林业土壤黑碳由于来源的多样性和受到人为活动的影响,其分布表现出独特的特征。以南京市为对象,调查分析了不同功能区城市林业土壤黑碳的含量及可能来源。结果表明:不同功能区城市林业土壤黑碳含量差异很大,其变幅为0.77—21.27g/kg。道路绿化带土壤黑碳含量显著高于其它功能区,居民区含量最低。黑碳在土壤表层中含量均高于表下层,黑碳富集于土壤表层。道路绿化带表层土壤黑碳含量与有机碳含量的比值(BC/SOC)为0.55,土壤黑碳的碳同位素比值(δ~(13)C_(PDB))为-27.04‰,与其它功能区差异显著,城市交通污染对土壤黑碳积累产生强烈影响。
[Abstract]:The nature of urban forestry soil has changed greatly due to the influence of anthropogenic activities in the process of urbanization. The black carbon of urban forestry soil is affected by the diversity of sources and anthropogenic activities. Its distribution shows unique characteristics, taking Nanjing as the object. The black carbon content of urban forestry soil in different functional areas and its possible sources were analyzed. The results showed that the black carbon content of urban forestry soil in different functional areas was very different. The range is 0.77-21.27g / kg. The content of black carbon in the greenbelt is significantly higher than that in other functional areas, and the content in residential area is the lowest. The content of black carbon in the surface layer of the soil is higher than that in the lower layer of the soil. The ratio of black carbon content to organic carbon content in the surface layer of the road green belt is 0.55. The carbon isotope ratio of soil black carbon was -27.04 鈥，

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