上海植物园土壤碳分布特征及其影响因素研究

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关键词城市绿地；土壤碳；分布特征；影响因素；温室气体

中图分类号S153.6文献标识码A

文章编号 0517-6611(2026)03-0071-05

doi:10.3969/j.issn.0517-6611.2026.03. 014

开放科学(资源服务)标识码(OSID）：

Study on the Distribution Characteristics of Soil Carbon and InfluencingFactors in Shanghai Botanical Garden CAO Shi-wei（Shanghai Gardening-Landscaping Construction Co.,Ltd.,Shanghai 200335）

AbstractOetieTissudyivestigatesthsatialditrbharacteristoflarbncotentditsifueningactiie entareasofShanghaiBotanicalGarden.Method]Throughfeldsamplingandlaboratoryanalysis,totalcarbon（TC）,totalorganicarbon （TOC),totaltrogen(T）andotricohmialpropertisoftesoilremeasuedCominedwitheasurementsf greosegas （ CO2 and CH4 ）emission rates,thevariation paternsandcontrollingfactors were analyzed.Result]TheTOCcontent inthebotanical garden soilsislwertnatoffstdinangiutranhatofoasawetdsdegeosesemissseloo fromnaturalwetlandsandpadyfelds;teTOCcontentinthelotuspondareaadsubmergedwalkwayareaissignificantlylowertanttin theriverbankareaandlargetreearea;soilTCandTOCareinfluencedbyvalablephosphorus（AP）,TNandpH,withAPhvingiificant positive effect on soil carbon content,while ΔpH shows a significant negative effect; soil CO2 emissions are significantly affected by AP and pH.The application of phosphate fertilizers contributes to soil carbon accumulation and reduces CH4 emissions but may increase CO2 emissions. In contrast,nitrate nitrogen application can lower ΔpH ,enhance soil carbon storage,and simultaneously promote CO2 and CH4 release. Conclusion]esusofissudyprovideaietifasisfolabonmaagentandgeouegsgtioinotacalgad. Key WordsUrban green land;Soil carbon;Distribution characteristics;Influencing factors;Greenhouse gases

土壤碳库是陆地生态系统中规模最大的碳储存库之[],其含量变化不仅影响土壤肥力,还直接影响全球碳循环和气候变化[2]。（剩余14356字）