Scaling relationships of leaf traits do not change among months in a temperate shrub species

• Autorzy: Du N. , Wang R.-Q. , Zhang X.-R. , Xu F. , Tan X.-F. , Guo W.-H.
• Języki publikacji: EN

Abstrakty

EN

Leaf traits scaling relationships were compared in different months (May, June, July and August) in a temperate shrub species, Vitex negundo Linn. var. heterophylla (Franch.) Rehd. Leaf traits variation and the impact of environment were also studied. Our results showed that specific leaf area (SLA), leaf nitrogen content (Nmass), leaf phosphorus content (Pmass) and leaf chlorophyll content (Chlmass) were positively correlated, and all of the pairwise relationships showed a common standardized major axis (SMA) slope in different months. The variation of SLA, chlorophyll a content (Chlmass a), chlorophyll b content (Chlmass b), Chlmass a/b and maximum quantum yield of PSII (Fv/Fm) were mainly habitat-dependent, while the variation of Pmass and Nmass/Pmass were mainly month-dependent. Redundancy analysis (RDA) was used to further explore the relationships between leaf traits and environmental factors. We found that plants under shade (the relative photosynthetic photon flux density was about 10%) developed light-capturing behavior at leaf level (higher SLA) and cellular level (higher Chlmass/Nmass and lower Chlmass a/b). The increased Nmass/Pmass with month was mainly resulted from the large absorption of soil nitrogen and the decrease of soil pH. In a word, our study indicates that species may not have fundamentally different carbon capture strategies in different months. Variation of different leaf traits are related to different environmental factors in the field.

Słowa kluczowe

EN

leaf trait; scaling relationship; shrub species; Vitex negundo; specific leaf area; nitrogen content; phosphorus content; chlorophyll; standardized major axis; redundancy analysis; chlorophyll fluorescence

• Wydawca: -
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2013
• Tom: 61
• Numer: 1
• Opis fizyczny: p.23-34,fig.,ref.

Twórcy

autor

Du N.

• Institute of Environmental Research, Shandong University, Ji’nan 250100, China

autor

Wang R.-Q.

autor

Zhang X.-R.

autor

Xu F.

autor

Tan X.-F.

autor

Guo W.-H.

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