Within-community variability of plant leaf N and P contents in Tiantong, Zhejiang Province

KANG Meng; XIE Yi-ming; XU Yue; XU Yi-lu; YAN En-rong

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Mar. 2013

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Article Navigation > Journal of East China Normal University (Natural Sciences) > 2013 > (2): 20-29, 49

KANG Meng, XIE Yi-ming, XU Yue, XU Yi-lu, YAN En-rong. Within-community variability of plant leaf N and P contents in Tiantong, Zhejiang Province[J]. Journal of East China Normal University (Natural Sciences), 2013, (2): 20-29, 49.

Citation:

KANG Meng, XIE Yi-ming, XU Yue, XU Yi-lu, YAN En-rong. Within-community variability of plant leaf N and P contents in Tiantong, Zhejiang Province[J]. Journal of East China Normal University (Natural Sciences), 2013, (2): 20-29, 49.

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Within-community variability of plant leaf N and P contents in Tiantong, Zhejiang Province

1.
Department of Environmental Science, East China Normal University, Shanghai 200062, China;
2.
Tiantong National Station of Forest Ecosystem, East China Normal University, Shanghai 200062, China

Received Date: 2012-04-01
Rev Recd Date: 2012-07-01
Publish Date: 2013-03-25

Abstract

Abstract

Exploring inter- and intra-specific variations in leaf N and P contents and their relationship with other community properties is important for revealing community assembly. In this study a plot with size of 40 m40 m, containing 46 species and 554 individuals, was selected in an evergreen broad-leaved forest (EBLF) in Tiantong region, Zhejiang Province. The N and P contents in foliage of each individual were quantified. The inter- and intra-specific variations in leaf N and P stoichiometry and their relationship with each of community height, individual size and micro-environmental conditions were analyzed. It was found that ① the mean of N and P contents and N/P was (16.75.11) mgg -1, (0.440.25) mgg -1, and (44.9923.53) mgg -1, respectively; ② leaf N and P stoichiometry at community level can be accurately estimated by the weighted mean value resulting from the most abundant species; ③ inter-species scale was responsible for the relatively large variance of leaf N contents, while intra-species scale was accounted for the relatively large variation in P content; and ④ leaf N and P increased with increasing plant light exposure. It was concluded that variation in N and P contents is determined by both inter- and intra species differences, but P content is mainly controlled by community environment under P limited conditions.
- leaf N and P contents,
- inter- and intra-species variations,
- community structure,
- EBLF,
- chemical stoichiometry

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References(1)

References

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