Intraspecific variation in nitrogen status and photosynthetic capacity within mountain birch populations
Intraspecific variation in nitrogen status and photosynthetic capacity within mountain birch populations
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DOI：
10.1111/j.1600-0587.1988.tb00812.x
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发表时间：
1988-12
期刊：
影响因子：
5.9
通讯作者：
P. Karlsson;K. Nordell
中科院分区：
文献类型：
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作者：
P. Karlsson;K. Nordell
比较了山地桦树种群叶片氮浓度和光合能力在个体间和立地间的相对变化。高级警官（Ledeb.）Nyman)。叶片氮浓度和光合能力在个体间存在显著差异；个体之间的差异分别占总平方和的35%和26%。叶片形态的两项测量也显示出个体间的差异（占总变异的35-58%）。受立地差异影响的变异范围为13%（叶片形状，P = 0.11） ~ 36%（叶片氮浓度和光合能力，P≤0.01）。在光合能力的变化中，51%与叶片氮浓度有关。讨论了所发现差异的可能原因和后果。
The relative variation in leaf nitrogen concentration and photosynthetic capacity among individuals and sites are compared for mountain birch populations (Betula pubsecens Ehrh. ssp tortuosa (Ledeb.) Nyman). Leaf nitrogen concentration and photosynthetic capacity showed significant differences among individuals; 35 and 26% of the total sum of squares respectively, was attributable to differences among individuals. Two measures of leaf morphology also showed differences among individuals (35–58% of total variation). The variation attributable to site differences ranged from 13% (leaf shape, P = 0.11) to 36% (leaf N concentration and photosynthetic capacity, P≤0.01). Of the variation in photosynthetic capacity, 51% was related to leaf nitrogen concentration. Possible causes for and consequences of the differences found are discussed.