The Response of Stoichiometry of Leaf Carbon,Nitrogen and Phosphorus of <i>Phyllostachys edulis</i> Forests to Altitude

HUANG Shu-rong; XIE Yan-yan; CHEN Shuang-lin; GUO Zi-wu

Volume 39 Issue 1

Apr. 2021

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HUANG Shu-rong, XIE Yan-yan, CHEN Shuang-lin, GUO Zi-wu. The Response of Stoichiometry of Leaf Carbon,Nitrogen and Phosphorus of Phyllostachys edulis Forests to Altitude[J]. JOURNAL OF BAMBOO RESEARCH, 2020, 39(1): 73-78.

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HUANG Shu-rong, XIE Yan-yan, CHEN Shuang-lin, GUO Zi-wu. The Response of Stoichiometry of Leaf Carbon,Nitrogen and Phosphorus of Phyllostachys edulis Forests to Altitude[J]. JOURNAL OF BAMBOO RESEARCH, 2020, 39(1): 73-78.

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The Response of Stoichiometry of Leaf Carbon,Nitrogen and Phosphorus of Phyllostachys edulis Forests to Altitude

1. Longyou Forestry Extension Station, Longyou 324403, Zhejiang, China;
2. Research Institute of Subtropical Forestry, CAF, Hangzhou, 311400, Zhejiang, China

Received Date: 2019-11-30
Available Online: 2021-04-29
Publish Date: 2021-04-29

Abstract

Abstract

Phyllostachys edulis is the most important economic bamboo species,and distributes vertically along altitudes. The stoichiometry of leaf carbon,nitrogen and phosphorus of Phyllostachys edulis forests at various altitude was studied,so as to guide the management and fertilization of Ph. edulis forests. The concentrations of leaf carbon,nitrogen and phosphorus of Ph. edulis forests at three different altitudes were determined,and stoichiometry and allometry were analyzed. The results showed that the concentration of leaf carbon,nitrogen and phosphorus and N:P ratios decreased,while ratios of C:N and C:P increased with bamboo age increasing. Furthermore,the concentration of leaf carbon,nitrogen and phosphorus of the 1st age class bamboos were all higher than that of the 2nd and 3rd age class bamboos., There were no difference in the concentration and its stoichiometry of leaf carbon,nitrogen and phosphorus between the 2nd and 3rd age class bamboos. With the altitude increasing,leaf carbon deceased slightly,while leaf nitrogen and phosphorus decreased greatly,. Of which,leaf nitrogen and phosphorus of Ph. edulis from low and medium altitude were all higher obviously than that of high altitude. No significant difference in leaf nitrogen of between low and medium altitude was observed,but the difference in leaf phosphorus between them was significant. With the altitude increasing,leaf C:N,C:P,N:P ratios increased dramatically. Leaf C:N of low and medium altitude were greatly higher than that of high altitude,and leaf N:P of medium and high altitude were obviously higher than that of low altitude. There were significant differences of C:P among the three altitudes. With the altitude increasing,leaf C:N,C:P,N:P ratios increased. Leaf C:N of low and medium altitude were greatly higher than that of high altitude,and leaf N:P of medium and high altitude were obviously higher than that of low altitude. There were significant differences of C:P among the three altitudes. There were significant positive allometric growth among leaf carbon,nitrogen and phosphorus. With the altitudes increasing,allometric exponent between leaf carbon-nitrogen,and carbon-phosphorus decreased obviously,and that of N-P increased dramatically. Thus,with the attitude increasing,the leaf nitrogen and phosphorus decreased,and their use efficiency increased greatly,yet,phosphorus limitation to Phyllostachys edulis growth enhanced. So more phosphorus should be added at high altitude during the bamboo management.
- Phyllostachys edulis,
- Altitude,
- Ecological stoichiometry,
- Carbon,
- Nitrogen,
- Phosphorus

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