Carbon Storage in a Eucalyptus Plantation Chronosequence in Southern China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Site Description
Stand Age (Years) | Stand Density (Trees ha−1) | Mean DBH (cm) | Mean Height (m) | Altitude (m) | Slope Degree (°) | Soil Types |
---|---|---|---|---|---|---|
1 | 1116 | 4.3 | 4.4 | 140–150 | 0–10 | Lateritic red soil |
2 | 1348 | 9.6 | 11.8 | 85–170 | 27–34 | Lateritic red soil |
3 | 1355 | 10.6 | 12.4 | 37–171 | 12–36 | Lateritic red soil |
4–5 | 1197 | 11.8 | 14.2 | 24–161 | 0–36 | Lateritic red soil |
6–8 | 1100 | 14.8 | 18.6 | 33–133 | 0–27 | Lateritic red soil |
2.2. Overstory and Understory Biomass
Component | Allometric Equation | R2 | P | RSS |
---|---|---|---|---|
leaf | W = 1.182 | 0.762 | <0.01 | 0.690 |
branch | W = 0.042D1.835 | 0.894 | <0.01 | 1.530 |
stem | W = 0.028D2.996 | 0.978 | <0.01 | 0.811 |
root | W = 0.06D1.771 | 0.851 | <0.01 | 1.831 |
total | W = 0.138D2.436 | 0.977 | <0.01 | 0.556 |
2.3. Litter Fall Biomass
2.4. Fine-Root Biomass
2.5. Mineral Soil Sampling
2.6. Chemical Analysis
2.7. Statistical Methods
3. Results
3.1. Biomass Carbon Pool
Components | P1 | pct. | P2 | pct. | P3 | pct. | P4–5 | pct. | P6–8 | pct. |
---|---|---|---|---|---|---|---|---|---|---|
Tree Layer | ||||||||||
leaf | 0.7±0.1 | 22.3 | 1.2 ± 0.2 | 5.0 | 1.2 ± 0.1 | 3.8 | 1.1 ± 0.2 | 2.7 | 1.5 ± 0.2 | 2.1 |
branch | 0.4 ± 0.0 | 12.0 | 1.9 ± 0.3 | 8.0 | 2.3 ± 0.2 | 7.2 | 2.6 ± 0.3 | 6.2 | 3.5 ± 0.5 | 5.0 |
stem | 1.6 ± 0.2 | 51.1 | 18.6 ± 2.1 | 77.4 | 25.3 ± 3.8 | 80.1 | 35.6 ± 4.1 | 83.7 | 60.8 ± 8.5 | 86.7 |
root | 0.5 ± 0.0 | 14.6 | 2.3 ± 0.2 | 9.6 | 2.8 ± 0.2 | 8.9 | 3.2 ± 0.3 | 7.5 | 4.3 ± 0.7 | 6.1 |
subtotal | 3.1 ± 0.3 | 45.4 | 24.0 ± 2.7 | 77.3 | 31.6 ± 4.2 | 81.3 | 42.6 ± 4.7 | 85.0 | 70.1 ± 9.8 | 92.9 |
Shrub Layer | ||||||||||
leaf | 0.1 ± 0.0 | 25.0 | 0.1 ± 0.0 | 28.1 | 0.2 ± 0.0 | 17.5 | 0.2 ± 0.0 | 20.4 | 0.1 ± 0.0 | 19.6 |
branch | 0.2 ± 0.0 | 40.0 | 0.2 ± 0.0 | 46.9 | 0.5 ± 0.0 | 52.4 | 0.5 ± 0.0 | 52.7 | 0.3 ± 0.0 | 51.0 |
root | 0.1 ± 0.0 | 35.0 | 0.1 ± 0.0 | 25.0 | 0.3 ± 0.0 | 30.1 | 0.3 ± 0.0 | 26.9 | 0.2 ± 0.0 | 29.4 |
subtotal | 0.4 ± 0.1 | 5.9 | 0.3 ± 0.0 | 1.0 | 1.0 ± 0.1 | 2.7 | 0.9 ± 0.1 | 1.9 | 0.5 ± 0.1 | 0.7 |
Herb Layer | ||||||||||
aboveground | 0.8 ± 0.1 | 57.4 | 0.5 ± 0.0 | 63.9 | 1.1 ± 0.1 | 67.5 | 1.2 ± 0.1 | 59.4 | 1.6 ± 0.2 | 64.6 |
belowground | 0.6 ± 0.1 | 42.6 | 0.3 ± 0.0 | 36.1 | 0.5 ± 0.0 | 32.5 | 0.8 ± 0.0 | 40.6 | 0.9 ± 0.1 | 35.4 |
subtotal | 1.4 ± 0.2 | 20.7 | 0.7 ± 0.1 | 2.3 | 1.6 ± 0.1 | 4.0 | 2.1 ± 0.1 | 4.1 | 2.4 ± 0.2 | 3.2 |
Littefall | 0.9 ± 0.0 | 13.2 | 2.4 ± 0.3 | 7.8 | 2.9 ± 0.3 | 7.5 | 2.01 ± 0.3 | 4.1 | 2.3 ± 0.2 | 3.1 |
Fine Root | ||||||||||
0–20 | 0.8 ± 0.1 | 78.0 | 1.9 ± 0.2 | 52.8 | 1.4 ± 0.1 | 78.5 | 2.1 ± 0.2 | 84.4 | 0.1 ± 0.0 | 54.5 |
20–40 | 0.2 ± 0.0 | 22.0 | 1.7 ± 0.2 | 47.2 | 0.34 ± 0.0 | 21.5 | 0.4 ± 0.0 | 15.6 | 0.1 ± 0.0 | 45.5 |
subtotal | 1.0 ± 0.1 | 14.7 | 3.6 ± 0.3 | 11.5 | 1.7 ± 0.2 | 4.4 | 2.4 ± 0.2 | 4.9 | 0.1 ± 0.0 | 0.1 |
Total | 6.8 ± 0.6 | 31.0 ± 3.3 | 38.8 ± 4.7 | 50.1 ± 5.4 | 75.5 ± 9.9 |
3.2. Mineral Soil Carbon Pool
Stages | 0–10 | 10–20 | 20–30 | 30–50 | 50–100 | 0–100 | |||||
---|---|---|---|---|---|---|---|---|---|---|---|
C | pct. | C | pct. | C | pct. | C | pct. | C | pct. | C | |
P1 | 18.3b ± 3.8 | 17.2 | 16.5a ± 3.2 | 15.6 | 12.7ab ± 2.3 | 12.0 | 19.9b ± 3.7 | 18.8 | 38.7b ± 5.6 | 36.5 | 106.1bc ± 10.8 |
P2 | 29.9a ± 3.6 | 21.1 | 20.8a ± 3.7 | 14.7 | 17.3a ± 2.6 | 12.2 | 27.1ab ± 2.9 | 19.1 | 46.5ab ± 3.6 | 32.8 | 141.6ab ± 13.0 |
P3 | 32.9a ± 4.5 | 20.0 | 20.0a ± 3.7 | 12.1 | 15.9ab ± 2.6 | 9.6 | 32.9a ± 3.5 | 20.0 | 63.2a ± 4.6 | 38.3 | 164.9a ± 12.4 |
P4–5 | 24.4ab ± 2.7 | 22.0 | 17.3a ± 2.0 | 15.6 | 13.9ab ± 2.4 | 12.5 | 20.1b ± 2.4 | 18.1 | 35.4b ± 3.6 | 31.9 | 111.1bc ± 10.8 |
P6–8 | 15.0b ± 2.5 | 17.2 | 11.0a ± 1.34 | 12.6 | 8.5b ± 1.4 | 9.7 | 16.0b ± 2.4 | 18.3 | 36.7b ± 3.9 | 42.1 | 87.2c ± 14.2 |
3.3. Carbon Allocation
Stages | Aboveground | Belowground | Ecosystem | ||
---|---|---|---|---|---|
C | pct. | C | pct. | C | |
P1 | 4.6 | 4.1 | 108.3 | 95.9 | 112.9 |
P2 | 24.8 | 14.4 | 147.7 | 85.6 | 172.5 |
P3 | 33.5 | 16.4 | 170.3 | 83.6 | 203.8 |
P4–5 | 43.3 | 26.9 | 117.8 | 73.1 | 161.1 |
P6–8 | 70.1 | 43.1 | 92.6 | 56.9 | 162.7 |
4. Discussion
4.1. Biomass Carbon Storage
4.2. Soil C Storage
4.3. Ecosystem Total C Storage
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Du, H.; Zeng, F.; Peng, W.; Wang, K.; Zhang, H.; Liu, L.; Song, T. Carbon Storage in a Eucalyptus Plantation Chronosequence in Southern China. Forests 2015, 6, 1763-1778. https://doi.org/10.3390/f6061763
Du H, Zeng F, Peng W, Wang K, Zhang H, Liu L, Song T. Carbon Storage in a Eucalyptus Plantation Chronosequence in Southern China. Forests. 2015; 6(6):1763-1778. https://doi.org/10.3390/f6061763
Chicago/Turabian StyleDu, Hu, Fuping Zeng, Wanxia Peng, Kelin Wang, Hao Zhang, Lu Liu, and Tongqing Song. 2015. "Carbon Storage in a Eucalyptus Plantation Chronosequence in Southern China" Forests 6, no. 6: 1763-1778. https://doi.org/10.3390/f6061763