本文關(guān)鍵詞：不同功能區(qū)城市林業(yè)土壤黑碳含量及來源——以南京市為例　出處：《生態(tài)學(xué)報(bào)》2016年03期 　論文類型：期刊論文

  更多相關(guān)文章： 城市林業(yè)土壤 黑碳 含量 來源 南京市

【摘要】：由于城市化過程中人為活動(dòng)的影響,城市林業(yè)土壤的性質(zhì)發(fā)生了很大變化。城市林業(yè)土壤黑碳由于來源的多樣性和受到人為活動(dòng)的影響,其分布表現(xiàn)出獨(dú)特的特征。以南京市為對象,調(diào)查分析了不同功能區(qū)城市林業(yè)土壤黑碳的含量及可能來源。結(jié)果表明:不同功能區(qū)城市林業(yè)土壤黑碳含量差異很大,其變幅為0.77—21.27g/kg。道路綠化帶土壤黑碳含量顯著高于其它功能區(qū),居民區(qū)含量最低。黑碳在土壤表層中含量均高于表下層,黑碳富集于土壤表層。道路綠化帶表層土壤黑碳含量與有機(jī)碳含量的比值(BC/SOC)為0.55,土壤黑碳的碳同位素比值(δ~(13)C_(PDB))為-27.04‰,與其它功能區(qū)差異顯著,城市交通污染對土壤黑碳積累產(chǎn)生強(qiáng)烈影響。
[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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