Leaf litter decomposition of four tree species in subtropical China

DOU Rong-peng; JIANG Hong; YU Shu-quan; MA Yuan-dan; SONG Xin-zhang; GUO Pei-pei; ZHANG Xiao-chuan

doi:10.11833/j.issn.2095-0756.2010.02.001

Volume 27 Issue 2

Apr. 2010

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DOU Rong-peng, JIANG Hong, YU Shu-quan, MA Yuan-dan, SONG Xin-zhang, GUO Pei-pei, ZHANG Xiao-chuan. Leaf litter decomposition of four tree species in subtropical China[J]. Journal of Zhejiang A&F University, 2010, 27(2): 163-169. doi: 10.11833/j.issn.2095-0756.2010.02.001

Citation:

DOU Rong-peng, JIANG Hong, YU Shu-quan, MA Yuan-dan, SONG Xin-zhang, GUO Pei-pei, ZHANG Xiao-chuan. Leaf litter decomposition of four tree species in subtropical China[J]. Journal of Zhejiang A&F University, 2010, 27(2): 163-169. doi: 10.11833/j.issn.2095-0756.2010.02.001

Leaf litter decomposition of four tree species in subtropical China

doi: 10.11833/j.issn.2095-0756.2010.02.001

1.
International Ecological Research Center ，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;
2.
International Institute for Earth System Science，Nanjing University，Nanjing 210093，Jiangsu，China;
3.
Renewable Resources，University of Alberta，Edmonton T6G2R3，Alberta，Canada

More Information

Corresponding author: JIANG Hong
Publish Date: 2010-04-20

Abstract

In order to know its material cycling in the forest ecosystem for better sustainable management， leaf litter of four tree species（Pinus massoniana，Cyclobalanopsis glauca，Torreya grandis，and Carya cathayensis） from subtropical China was studied in a decomposition experiment with nylon bag using a correlation analysis. Leaf litter were collected in Chunan County of Zhejiang Province，in March of 2006， drying at 80 ℃ to constant weight，packed with 144 nylon bags，then replaced to evergreen broad-leaf forests ground surface. Twelve bags were withdrawn once a month. Then determine weight loss rate，and N，P，K，C and lignin contents variation. Results showed that the decomposition rate of T. grandis was fastest，annual decomposition coefficient（k） is 1.70，whereas the slowest was P. massoniana，k = 0.49. The correlation analysis was significant for litter decomposition rate and both initial N concentration（r = 0.99，P＜0.01） and initial P concentration（r = 0.97，P＜0.05）. During litter decomposition，N and P concentrations in leaf litter of Carya cathayensis，P. massoniana，and Cyclobalanopsis glauca increased. Also，rapid decreases were found in the first two months with K concentrations of Cyclobalanopsis glauca （6.22 - 1.96 gkg-1） and T. grandis（11.16 - 2.05 gkg-1）；then they decrease slowly. However，P. massoniana decreased （0.88 - 0.54 gkg-1） in the beginning then increased （0.54 - 1.90 gkg-1）. Thus，initial N and P leaf litter concentrations were sensitive indicators for decomposition rates in subtropical China.［Ch，1 fig. 6 tab. 23 ref.］
- forest ecology,
- subtropical,
- leaf litter,
- decomposition,
- nutrient cycle,
- carbon cycle

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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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Leaf litter decomposition of four tree species in subtropical China

1. International Ecological Research Center ，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China;

2. International Institute for Earth System Science，Nanjing University，Nanjing 210093，Jiangsu，China;

3. Renewable Resources，University of Alberta，Edmonton T6G2R3，Alberta，Canada

Corresponding author: JIANG Hong

Publish Date: 2010-04-20

Key words:

Abstract: In order to know its material cycling in the forest ecosystem for better sustainable management， leaf litter of four tree species（Pinus massoniana，Cyclobalanopsis glauca，Torreya grandis，and Carya cathayensis） from subtropical China was studied in a decomposition experiment with nylon bag using a correlation analysis. Leaf litter were collected in Chunan County of Zhejiang Province，in March of 2006， drying at 80 ℃ to constant weight，packed with 144 nylon bags，then replaced to evergreen broad-leaf forests ground surface. Twelve bags were withdrawn once a month. Then determine weight loss rate，and N，P，K，C and lignin contents variation. Results showed that the decomposition rate of T. grandis was fastest，annual decomposition coefficient（k） is 1.70，whereas the slowest was P. massoniana，k = 0.49. The correlation analysis was significant for litter decomposition rate and both initial N concentration（r = 0.99，P＜0.01） and initial P concentration（r = 0.97，P＜0.05）. During litter decomposition，N and P concentrations in leaf litter of Carya cathayensis，P. massoniana，and Cyclobalanopsis glauca increased. Also，rapid decreases were found in the first two months with K concentrations of Cyclobalanopsis glauca （6.22 - 1.96 gkg-1） and T. grandis（11.16 - 2.05 gkg-1）；then they decrease slowly. However，P. massoniana decreased （0.88 - 0.54 gkg-1） in the beginning then increased （0.54 - 1.90 gkg-1）. Thus，initial N and P leaf litter concentrations were sensitive indicators for decomposition rates in subtropical China.［Ch，1 fig. 6 tab. 23 ref.］

Leaf litter decomposition of four tree species in subtropical China

doi: 10.11833/j.issn.2095-0756.2010.02.001

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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