Impact of Nitrogen Fertilizer Application on Soil Organic Carbon and Its Active Fractions in Moso Bamboo Forests
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Site
2.2. Soil Sample Collection
2.3. SOC and Active Organic Carbon Fractions
2.4. Soil Carbon Pool Management Index
2.5. Data Analysis
3. Results
3.1. Characterization of Changes in Soil Organic Carbon and Active Organic Carbon in Response to N Input
3.2. Characterization of Changes in the Proportion of Active Organic Carbon in Response to N Input
3.3. Characterization of Changes in Soil Carbon Pool Management Indices in Response to N Input
3.4. Correlation between Soil Organic Carbon, Active Organic Carbon, and Carbon Pool Management Indices
3.5. Comprehensive Evaluation of Soil Organic Carbon and Its Active Fractions with Carbon Pool Management Indices
4. Discussion
4.1. Effects of Nitrogen Application on Soil Organic Carbon in Moso Bamboo Forests
4.2. Effects of Nitrogen Application on Soil Active Organic Carbon and Its Ratio in Moso Bamboo Forests
4.3. Effect of Nitrogen Application on Soil Carbon Pool Management Index in Moso Bamboo Forests
4.4. Innovations and Limitations
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Soil Depth | Nitrogen Application Treatments | POC/SOC (%) | MBC/SOC (%) | DOC/SOC (%) | ROC/SOC (%) |
---|---|---|---|---|---|
0~10 cm | CK | 6.47 ± 0.35 cd | 1.73 ± 0.06 b | 1.38 ± 0.07 b | 53.5 ± 1.64 ab |
N0 | 5.41 ± 0.1 d | 2.06 ± 0.08 a | 1.38 ± 0.06 b | 50.66 ± 4.75 ab | |
N1 | 12.89 ± 0.6 a | 0.85 ± 0.03 c | 1.69 ± 0.11 a | 58.32 ± 3.99 a | |
N2 | 10.49 ± 0.61 b | 1.06 ± 0.11 c | 1.46 ± 0.11 ab | 44.98 ± 3.25 b | |
N3 | 7.85 ± 1.03 c | 1.86 ± 0.09 ab | 0.9 ± 0.06 c | 28.34 ± 3.04 c | |
10~20 cm | CK | 8.6 ± 0.94 b | 1.07 ± 0.11 c | 1.18 ± 0.06 b | 50.07 ± 4.65 a |
N0 | 8.64 ± 1.1 b | 2.49 ± 0.19 a | 1.13 ± 0.11 b | 49.42 ± 2.88 a | |
N1 | 10.82 ± 0.14 ab | 1.05 ± 0.11 c | 1.41 ± 0.07 a | 58.64 ± 5.27 a | |
N2 | 11.66 ± 0.23 a | 1.4 ± 0.05 bc | 1.23 ± 0.01 ab | 50.14 ± 1.07 a | |
N3 | 10.01 ± 0.96 ab | 1.69 ± 0.16 b | 0.65 ± 0.04 c | 29.64 ± 3.83 b | |
20~30 cm | CK | 10.75 ± 1 a | 0.85 ± 0.12 a | 1.15 ± 0.07 b | 48.97 ± 2.64 b |
N0 | 11.45 ± 1.74 a | 2.47 ± 0.28 b | 1.09 ± 0.11 b | 56.88 ± 3.64 ab | |
N1 | 10.81 ± 0.97 a | 1.37 ± 0.09 b | 1.19 ± 0.06 ab | 63.48 ± 1.06 a | |
N2 | 10.71 ± 1.24 a | 2.07 ± 0.13 a | 1.45 ± 0.09 a | 64.95 ± 2.81 a | |
N3 | 10.32 ± 1.24 a | 2.45 ± 0.14 a | 0.81 ± 0.07 c | 47.47 ± 5.35 b |
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Chu, H.; Su, W.; Fan, S.; He, X.; Huang, Z. Impact of Nitrogen Fertilizer Application on Soil Organic Carbon and Its Active Fractions in Moso Bamboo Forests. Forests 2024, 15, 1483. https://doi.org/10.3390/f15091483
Chu H, Su W, Fan S, He X, Huang Z. Impact of Nitrogen Fertilizer Application on Soil Organic Carbon and Its Active Fractions in Moso Bamboo Forests. Forests. 2024; 15(9):1483. https://doi.org/10.3390/f15091483
Chicago/Turabian StyleChu, Haoyu, Wenhui Su, Shaohui Fan, Xianxian He, and Zhoubin Huang. 2024. "Impact of Nitrogen Fertilizer Application on Soil Organic Carbon and Its Active Fractions in Moso Bamboo Forests" Forests 15, no. 9: 1483. https://doi.org/10.3390/f15091483