Four light-response models to estimate photosynthesis of <em>Phyllostachys pubescens</em>

ZHANG Li-yang; WEN Guo-sheng; WANG Sheng-jie; LIU Zhao-ling

doi:10.11833/j.issn.2095-0756.2011.02.003

Volume 28 Issue 2

Apr. 2011

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ZHANG Li-yang, WEN Guo-sheng, WANG Sheng-jie, et al. Four light-response models to estimate photosynthesis of Phyllostachys pubescens[J]. Journal of Zhejiang A&F University, 2011, 28(2): 188-193. DOI: 10.11833/j.issn.2095-0756.2011.02.003

Four light-response models to estimate photosynthesis of Phyllostachys pubescens

DOI: 10.11833/j.issn.2095-0756.2011.02.003

1.
Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;
2.
College of Forestry，Agricultural University of Hebei，Baoding 071000，Hebei，China

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Corresponding author: WEN Guo-sheng
Publish Date: 2011-04-20

Abstract

The objective of this research was to determine the best light response model for Phyllostachys pubescens. Based on measurements of leaf photosynthesis response curves from January 2009 to January 2010，the light response curves for photosynthesis of Ph. pubescens were fitted to four different models：a non-rectangular hyperbolic model，a rectangular hyperbolic model，a quadratic function，and an exponential equation. Results of R2 obtained from the four methods were in the order：non-rectangular hyperbolic model and rectangular hyperbola model（R2＞0.95）＞exponential equation＞quadratic function. Using the non-rectangular hyperbolic and rectangular hyperbolic models for maximum net photosynthetic rates（Pmax） and dark respiration rate （Rd），the calculated results were much greater than the measured data；whereas with the index model，Pmax was accurate and Rd was slightly lower than measured values. Also，a quadratic function was used to fit the light saturation point （PLS） and Rd. Thus，an exponential equation could be used to calculate PLS and Pmax with a linear fitting of YAQ，light compensation point（PLC），and Rd using values following 100 molm－2s－1.［Ch，1 fig. 2 tab. 22 ref.］
- forest ecology,
- Phyllostachys pubescens,
- photosynthetic physiology,
- light response model

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沈阳化工大学材料科学与工程学院沈阳 110142

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Four light-response models to estimate photosynthesis of Phyllostachys pubescens

1. Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;

2. College of Forestry，Agricultural University of Hebei，Baoding 071000，Hebei，China

Corresponding author: WEN Guo-sheng

Publish Date: 2011-04-20

Key words:

Abstract: The objective of this research was to determine the best light response model for Phyllostachys pubescens. Based on measurements of leaf photosynthesis response curves from January 2009 to January 2010，the light response curves for photosynthesis of Ph. pubescens were fitted to four different models：a non-rectangular hyperbolic model，a rectangular hyperbolic model，a quadratic function，and an exponential equation. Results of R2 obtained from the four methods were in the order：non-rectangular hyperbolic model and rectangular hyperbola model（R2＞0.95）＞exponential equation＞quadratic function. Using the non-rectangular hyperbolic and rectangular hyperbolic models for maximum net photosynthetic rates（Pmax） and dark respiration rate （Rd），the calculated results were much greater than the measured data；whereas with the index model，Pmax was accurate and Rd was slightly lower than measured values. Also，a quadratic function was used to fit the light saturation point （PLS） and Rd. Thus，an exponential equation could be used to calculate PLS and Pmax with a linear fitting of YAQ，light compensation point（PLC），and Rd using values following 100 molm－2s－1.［Ch，1 fig. 2 tab. 22 ref.］

Four light-response models to estimate photosynthesis of Phyllostachys pubescens

DOI: 10.11833/j.issn.2095-0756.2011.02.003

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Four light-response models to estimate photosynthesis of Phyllostachys pubescens

doi: 10.11833/j.issn.2095-0756.2011.02.003

1. Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;

2. College of Forestry，Agricultural University of Hebei，Baoding 071000，Hebei，China

Corresponding author: WEN Guo-sheng

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Four light-response models to estimate photosynthesis of Phyllostachys pubescens

DOI: 10.11833/j.issn.2095-0756.2011.02.003

Abstract

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通讯作者: 陈斌, bchen63@163.com

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Four light-response models to estimate photosynthesis of Phyllostachys pubescens

doi: 10.11833/j.issn.2095-0756.2011.02.003

1. Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province，Zhejiang A & F University，Lin’an 311300，Zhejiang，China; 2. College of Forestry，Agricultural University of Hebei，Baoding 071000，Hebei，China

Corresponding author: WEN Guo-sheng

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1. Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration of Zhejiang Province，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;

2. College of Forestry，Agricultural University of Hebei，Baoding 071000，Hebei，China