Light intensity changes on <em>Cunninghamia lanceolata</em> in mixed stands with different concentrations of<em> Phyllostachys pubescens</em>

LIU Shuo; ZHOU Guo-mo; BAI Shang-bin

doi:10.11833/j.issn.2095-0756.2011.04.005

Volume 28 Issue 4

Aug. 2011

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LIU Shuo, ZHOU Guo-mo, BAI Shang-bin. Light intensity changes on Cunninghamia lanceolata in mixed stands with different concentrations of Phyllostachys pubescens[J]. Journal of Zhejiang A&F University, 2011, 28(4): 550-554. doi: 10.11833/j.issn.2095-0756.2011.04.005

Citation:

LIU Shuo, ZHOU Guo-mo, BAI Shang-bin. Light intensity changes on Cunninghamia lanceolata in mixed stands with different concentrations of Phyllostachys pubescens[J]. Journal of Zhejiang A&F University, 2011, 28(4): 550-554. doi: 10.11833/j.issn.2095-0756.2011.04.005

Light intensity changes on Cunninghamia lanceolata in mixed stands with different concentrations of Phyllostachys pubescens

doi: 10.11833/j.issn.2095-0756.2011.04.005

1.
School of Environmental Sciences and Resources，Zhejiang A & F University，Lin’an 311300，Zhejiang，China

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Corresponding author: ZHOU Guo-mo
Publish Date: 2011-08-20

Abstract

To help accumulate knowledge on the causes of death of Cunninghamia lanceolata due to expansion of nearby Phyllostachys pubescens bamboo stands，light intensity of three forest stands: a P. pubescens forest；a needle，broadleaf mixed forest with C. lanceolata；and a needle，broadleaf with C. lanceolata，and bamboo mixed forest；at the edge of P. pubescens bamboo stands was obtained using a quantum meter in 8：00－17：00，from July to September，to detect the light intensity（I），and using Li-6400 Portable Photosynthesis System to detect the light compensation point（LCP），from 9：00 to 10：00. Results showed that light intensity（I），increased with greater concentrations of P. pubescens within the forest stands：P. pubescens （bamboo）forest ＞ needle，broadleaf with C. lanceolata，and bamboo mixed forest ＞ needle，broadleaf with C. lanceolata mixed forest. Compared with an open field light intensity decreased 49.31% for the P. pubescens forest；55.91% for the needle，broadleaf with C. lanceolata，and bamboo mixed forest；and 85.70% for the needle，broadleaf with C. lanceolata mixed forest. A light intensity relationship was shown with the equation：Ineedle，broadleaf = 0.027 3 Ineedle，broadleaf，bamboo ＋ 0.032 0 Ibamboo ＋ 2.297 0. Also，the highest LCP was found with P. pubescens （19.60 molm-2s-1），then adult C. lanceolata （9.77 molm-2s-1），and then C. lanceolata saplings （9.78 molm-2s-1）；thus，light intensity of adult C. lanceolata and its seedlings was higher than the LCP，and the forests with C. lanceolata could continue to make organic matter. But because of the shadow characteristics of C. lanceolata seedlings，the increased light intensity could influence the C. lanceolata seedlings due to less shade. ［Ch，3 fig. 1 tab. 15 ref.］
- forest ecology,
- Phyllostachys pubescens,
- Cunninghamia lanceolata,
- light intensity,
- light compensation point （LCP）

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Proportional views

Light intensity changes on Cunninghamia lanceolata in mixed stands with different concentrations of Phyllostachys pubescens

1. School of Environmental Sciences and Resources，Zhejiang A & F University，Lin’an 311300，Zhejiang，China

Corresponding author: ZHOU Guo-mo

Publish Date: 2011-08-20

Key words:

Abstract: To help accumulate knowledge on the causes of death of Cunninghamia lanceolata due to expansion of nearby Phyllostachys pubescens bamboo stands，light intensity of three forest stands: a P. pubescens forest；a needle，broadleaf mixed forest with C. lanceolata；and a needle，broadleaf with C. lanceolata，and bamboo mixed forest；at the edge of P. pubescens bamboo stands was obtained using a quantum meter in 8：00－17：00，from July to September，to detect the light intensity（I），and using Li-6400 Portable Photosynthesis System to detect the light compensation point（LCP），from 9：00 to 10：00. Results showed that light intensity（I），increased with greater concentrations of P. pubescens within the forest stands：P. pubescens （bamboo）forest ＞ needle，broadleaf with C. lanceolata，and bamboo mixed forest ＞ needle，broadleaf with C. lanceolata mixed forest. Compared with an open field light intensity decreased 49.31% for the P. pubescens forest；55.91% for the needle，broadleaf with C. lanceolata，and bamboo mixed forest；and 85.70% for the needle，broadleaf with C. lanceolata mixed forest. A light intensity relationship was shown with the equation：Ineedle，broadleaf = 0.027 3 Ineedle，broadleaf，bamboo ＋ 0.032 0 Ibamboo ＋ 2.297 0. Also，the highest LCP was found with P. pubescens （19.60 molm-2s-1），then adult C. lanceolata （9.77 molm-2s-1），and then C. lanceolata saplings （9.78 molm-2s-1）；thus，light intensity of adult C. lanceolata and its seedlings was higher than the LCP，and the forests with C. lanceolata could continue to make organic matter. But because of the shadow characteristics of C. lanceolata seedlings，the increased light intensity could influence the C. lanceolata seedlings due to less shade. ［Ch，3 fig. 1 tab. 15 ref.］

Light intensity changes on Cunninghamia lanceolata in mixed stands with different concentrations of Phyllostachys pubescens

doi: 10.11833/j.issn.2095-0756.2011.04.005

Abstract

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Proportional views

通讯作者: 陈斌, bchen63@163.com

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Light intensity changes on Cunninghamia lanceolata in mixed stands with different concentrations of Phyllostachys pubescens

doi: 10.11833/j.issn.2095-0756.2011.04.005

1. School of Environmental Sciences and Resources，Zhejiang A & F University，Lin’an 311300，Zhejiang，China

Corresponding author: ZHOU Guo-mo

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Light intensity changes on Cunninghamia lanceolata in mixed stands with different concentrations of Phyllostachys pubescens

doi: 10.11833/j.issn.2095-0756.2011.04.005

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Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

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Light intensity changes on Cunninghamia lanceolata in mixed stands with different concentrations of Phyllostachys pubescens

doi: 10.11833/j.issn.2095-0756.2011.04.005

1. School of Environmental Sciences and Resources，Zhejiang A & F University，Lin’an 311300，Zhejiang，China

Corresponding author: ZHOU Guo-mo

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