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dc.contributor.author曾琦
dc.contributor.author高国伟
dc.contributor.author林益明
dc.contributor.author范航清
dc.date.accessioned2017-11-14T02:46:04Z
dc.date.available2017-11-14T02:46:04Z
dc.date.issued2008-12-15
dc.identifier.citation厦门大学学报(自然科学版),2008,47(S2):188-192
dc.identifier.issn0438-0479
dc.identifier.otherXDZK2008S2041
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/154046
dc.description.abstract对广西北海大冠沙两种生长型(矮型:成熟林树高<1.5 m;过渡型:成熟林树高1.5~2 m)的红树植物白骨壤(Av-icennia marina)成熟叶和衰老叶的N、P含量、N∶P比及内吸收率进行研究.结果表明:(1)两种生长型白骨壤成熟叶具有较高的N含量,分别为(20.45±1.10)mg/g和(22.25±1.12)mg/g;P含量分别为(1.42±0.03)mg/g和(1.31±0.03)mg/g;叶片衰老过程中,N、P含量明显下降;(2)叶片衰老过程中,N∶P有增加的趋势;两种生长型成熟叶的N∶P分别为14.41±0.85和16.97±0.86,显示两种生长型白骨壤均为N、P共同限制;(3)两种生长型白骨壤的N、P内吸收率在60%以上,内吸收率的高低与生长型没有明显关系.
dc.description.abstractNitrogen and phosphorus concentrations,N∶P ratio and nutrient resorption efficiency of leaves during senescence for two growth forms(a dwarf form with tree height of below 1.5 m,and a transition form with tree height from 1.5 m to 2 m at maturity) of Avicennia marina were studied at Daguansha,Beihai,Guangxi.The results showed as follows:(1)Mature leaves had the relatively high N concentration,with(20.45±1.10) mg/g for dwarf form and(22.25±1.12) mg/g for transition form;P concentration of mature leaves was(1.42±0.03) mg/g for dwarf form and(1.31±0.03) mg/g for transition form,respectively;N and P concentrations decreased with leaf senescence.(2) N∶P ratio increased with leaf senescence,N∶P ratio of two growth forms was 14.41 ± 0.85 and 16.97 ± 0.86,respectively.(3) Resorption efficiency of N or P was above 60%,and there was no significant effect of growth form on resorption efficiency.
dc.description.sponsorship国家自然科学基金(40376026);; 教育部新世纪优秀人才支持计划(NCET-07-0725);; 国家基础科学人才培养基金项目(J0630649)资助
dc.language.isozh_CN
dc.subject白骨壤
dc.subject生长型
dc.subject
dc.subject
dc.subject内吸收
dc.subjectAvicennia marina
dc.subjectgrowth form
dc.subjectnitrogen
dc.subjectphosphorus
dc.subjectresorption
dc.title红树植物白骨壤叶片衰老过程的氮磷内吸收变化研究
dc.title.alternativeResorption Efficiencies of Nitrogen and Phosphorus of Leaves During Senescence for Two Growth Forms of Avicennia marina
dc.typeArticle


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