上海市金山城区和工业区绿化树种叶片碳氮磷化学计量特征  

Stoichiometric characteristics of carbon,nitrogen and phosphorus in leaves of greening tree species in Jinshan urban and industrial areas of Shanghai

作　　者：钱军 杨瑞卿 QIAN Jun;YANG Ruiqing(Jinshan Garden Management Institute,Shanghai 200540,China;Shanghai Municipal Landscape Management and Guidance Station,Shanghai 200020,China)

机构地区：[1]金山区园林管理所,上海200540 [2]上海市绿化管理指导站,上海200020

出　　处：《上海农业学报》2025年第1期43-49,共7页Acta Agriculturae Shanghai

基　　金：十三五国家重点研发计划:人工林类型与结构对物质循环过程的影响(2016YFD0600202)。

摘　　要：以上海市金山城区和工业区5种常见绿化树种为研究对象,比较城区和工业区5个树种叶片碳(C)、氮(N)、磷(P)含量及其化学计量比,分析植物叶片C、N、P含量及其化学计量比差异的影响因子,评价其养分状况,为金山城区和工业区绿化植物的养护管理提供科学指导。结果表明:树种是影响叶片C、N、P含量及其化学计量比的主要因子,树种和区位对植物C、N、P含量及其化学计量比的交互作用不显著(P> 0.05);金山区桂花对N和P的相对利用效率较好;城区和工业区5个树种生长主要受N限制。园林绿化管理时应施加氮肥,以缓解植物生长受到的养分限制。Taking 5 common greening tree species in Jinshan urban and industrial areas of Shanghai as the research object,the contents of carbon(C),nitrogen(N),phosphorus(P) and their stoichiometric ratios in leaves of 5 tree species were compared.The influencing factors of C,N,P contents and their stoichiometric ratios in leaves were analyzed.And the nutrient status was evaluated to provide scientific guidance for the maintenance and management of greening plants in urban and industrial areas of Jinshan District.The results showed that the interaction of tree species and location on C,N and P contents and their stoichiometric ratios was not significant(P> 0.05),and tree identity was the main factors affecting C,N and P contents and their stoichiometric ratios in leaves.The relative utilization efficiency of N and P byOsmanthus fragransin Jinshan District was better.The growth of 5 tree species in urban and industrial areas was mainly limited by N.Nitrogen fertilizer should be applied in landscaping management to alleviate the nutrient limitation of plant growth.

关 键 词：碳 氮 磷 化学计量比 养分限制 

分 类 号：S688[农业科学—观赏园艺]