Simulated nitrogen dynamics for a <em>Cunninghamia lanceolata</em> plantation with selected rotation ages

XIN Zan-hong; JIANG Hong; JIE Cheng-yue; WEI Xiao-hua; BLANCO Juan; ZHOU Gou-mo

Volume 28 Issue 6

Dec. 2011

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XIN Zan-hong, JIANG Hong, JIE Cheng-yue, WEI Xiao-hua, BLANCO Juan, ZHOU Gou-mo. Simulated nitrogen dynamics for a Cunninghamia lanceolata plantation with selected rotation ages[J]. Journal of Zhejiang A&F University, 2011, 28(6): 855-862.

Citation:

XIN Zan-hong, JIANG Hong, JIE Cheng-yue, WEI Xiao-hua, BLANCO Juan, ZHOU Gou-mo. Simulated nitrogen dynamics for a Cunninghamia lanceolata plantation with selected rotation ages[J]. Journal of Zhejiang A&F University, 2011, 28(6): 855-862.

Simulated nitrogen dynamics for a Cunninghamia lanceolata plantation with selected rotation ages

1.
International Research Center of Spatial Ecology and Ecosystem Ecology，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;
2.
International Institute for Earth System Science，Nanjing University，Nanjing 210093，Jiangsu，China;
3.
Department of Earth and Environmental Sciences，University of British Columbia Okanagan，Kelowna V1V1V7，BC，Canada

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Corresponding author: JIANG Hong
Publish Date: 2011-12-20

Abstract

To show nitrogen dynamics for successive rotations of Cunninghamia lanceolata plantations with declining productivity and the affect on sustainable management，the FORECAST model was used to simulate 200 years of growth for Cunninghamia lanceolata plantations with different rotation ages in China. Results suggested that N uptake，N return to the soil，and foliar N content could increase with a longer rotation age. The model showed that soil available N decreased with a 25-year rotation age and then increased with longer rotation ages. With the medium site，the average soil available N was 96.24 kghm－2 for a 10-year rotation age，86.87 kghm－2 for a 25-year rotation age，and 96.07 kghm－2 for a 50-year rotation age; the average uptake N was 49.22 kghm－2 for a 10-year rotation age，58.44 kghm－2 for a 25-year rotation age，and 69.07 kghm－2 for a 50-year rotation age；and the average return of N to the soil was 26.75 kghm－2 for a 10-year rotation age，44.76 kghm－2 for a 25-year rotation age，and 60.74 kghm－2 for a 50-year rotation age. The recycled N ratios from the first four rotations were 0.544，0.766，0.847，and 0.879. ［Ch，6 fig. 1 tab. 34 ref.］
- forest ecology,
- Cunninghamia lanceolata,
- rotation age,
- nitrogen dynamics,
- FORECAST model

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通讯作者: 陈斌, bchen63@163.com

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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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Simulated nitrogen dynamics for a Cunninghamia lanceolata plantation with selected rotation ages

1. International Research Center of Spatial Ecology and Ecosystem Ecology，Zhejiang A & F University，Lin’an 311300，Zhejiang，China;

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

3. Department of Earth and Environmental Sciences，University of British Columbia Okanagan，Kelowna V1V1V7，BC，Canada

Corresponding author: JIANG Hong

Publish Date: 2011-12-20

Key words:

Abstract: To show nitrogen dynamics for successive rotations of Cunninghamia lanceolata plantations with declining productivity and the affect on sustainable management，the FORECAST model was used to simulate 200 years of growth for Cunninghamia lanceolata plantations with different rotation ages in China. Results suggested that N uptake，N return to the soil，and foliar N content could increase with a longer rotation age. The model showed that soil available N decreased with a 25-year rotation age and then increased with longer rotation ages. With the medium site，the average soil available N was 96.24 kghm－2 for a 10-year rotation age，86.87 kghm－2 for a 25-year rotation age，and 96.07 kghm－2 for a 50-year rotation age; the average uptake N was 49.22 kghm－2 for a 10-year rotation age，58.44 kghm－2 for a 25-year rotation age，and 69.07 kghm－2 for a 50-year rotation age；and the average return of N to the soil was 26.75 kghm－2 for a 10-year rotation age，44.76 kghm－2 for a 25-year rotation age，and 60.74 kghm－2 for a 50-year rotation age. The recycled N ratios from the first four rotations were 0.544，0.766，0.847，and 0.879. ［Ch，6 fig. 1 tab. 34 ref.］

Simulated nitrogen dynamics for a Cunninghamia lanceolata plantation with selected rotation ages

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