Influences of 13 Years New Conservation Management on Labile Soil Organic Carbon and Carbon Sequestration in Aggregates in Northeast China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Experimental Site
2.2. Field Experimental Treatment
2.3. Soil Sampling
2.4. Soil Aggregate Size Fractionation
- Ai: The percentage of each water stable aggregate
- Mi: The mass of each soil aggregate
- M: The total mass of soil
- n: The number of groups of soil aggregate
- xi: The average diameter of soil aggregate
- wi: The mass of soil aggregate
2.5. Soil Analysis
- C1: C fraction in soil with treatment
- C0: C fraction in soil without any treatment
- Mi: The percentage of different aggregates size class (%)
- Corg i: The contents of organic carbon in different aggregates size class (g·kg−1)
- Bd: The volume weight of soil (g·cm−3)
- H: The height of soil depth (cm)
2.6. Statistical Methods
3. Results
3.1. Soil Organic Carbon
3.2. Soil Organic Carbon Fractions
3.3. Soil Aggregate Distribution, Stabilty and Organic Carbon Storage
4. Discussion
4.1. The Influence of Tillage Management on Soil Organic Carbon and Labile Soil Organic Carbon Fractions
4.2. The Influence of Tillage Management on Aggregate-Size Distribution, Stabilty and Soil Aggregate Organic Carbon Storage
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Management | MBC | EOC | WSOC | LFOC |
---|---|---|---|---|
(mg·kg−1) | (mg·kg−1) | (mg·kg−1) | (mg·kg−1) | |
NCM | 331.0 | 1155 | 259.3 | 3749 |
CT | 262.3 | 1083 | 232.5 | 2159 |
Soil Depths | Treatments | Macroaggregate (%) | Microaggregate (%) |
---|---|---|---|
>0.25 mm | <0.25 mm | ||
0–10 cm | NCM | 49.6 a | 50.4 b |
CT | 37.1 b | 62.9 a | |
10–20 cm | NCM | 41.2 a | 58.8 a |
CT | 43.7 a | 56.3 a | |
20–40 cm | NCM | 34.2 a | 65.8 a |
CT | 30.8 a | 69.2 a |
Soil Depths | Treatments | MWD |
---|---|---|
0–10 cm | NCM | 0.48 a |
CT | 0.41 b | |
10–20 cm | NCM | 0.42 a |
CT | 0.43 a | |
20–40 cm | NCM | 0.40 a |
CT | 0.38 a |
Soil Depths | Treatments | Soil Aggregates | ||||
---|---|---|---|---|---|---|
>2 mm | 2–1 mm | 1–0.5 mm | 0.5–0.25 mm | <0.25 mm | ||
0–10 cm | NCM | 57.3 ± 1.5 a | 51.8 ± 1.4 a | 620.4 ± 78.1 a | 551.6 ± 66.2 a | 1346.7 ± 157.9 b |
CT | 32.2 ± 0.4 a | 29.3 ± 1.1 a | 474.5 ± 4.7 b | 402.5 ± 1.8 a | 1654.3 ± 1.6 a | |
10–20 cm | NCM | 24.0 ± 3.9 a | 19.9 ± 5.0 a | 382.8 ± 14.6 b | 341.5 ± 13.1 b | 1209.6 ± 41.6 a |
CT | 38.1 ± 2.2 a | 34.5 ± 1.3 a | 516.6 ± 4.1 a | 438.1 ± 4.9 a | 1281.1 ± 75.5 a | |
20–40 cm | NCM | 24.9 ± 6.2 a | 26.6 ± 4.2 a | 370.7 ± 55.0 a | 314.4 ± 46.7 a | 1471.4 ± 120.6 b |
CT | 30.0 ± 0.8 a | 26.5 ± 0.2 a | 430.0 ± 2.0 a | 364.6 ± 12.8 a | 1988.6 ± 16.5 a |
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Yang, Y.; Kang, Z.; Xu, G.; Cui, Z.; Yu, Y.; Wang, Y.; Lu, Y. Influences of 13 Years New Conservation Management on Labile Soil Organic Carbon and Carbon Sequestration in Aggregates in Northeast China. Sustainability 2023, 15, 8570. https://doi.org/10.3390/su15118570
Yang Y, Kang Z, Xu G, Cui Z, Yu Y, Wang Y, Lu Y. Influences of 13 Years New Conservation Management on Labile Soil Organic Carbon and Carbon Sequestration in Aggregates in Northeast China. Sustainability. 2023; 15(11):8570. https://doi.org/10.3390/su15118570
Chicago/Turabian StyleYang, Yang, Zhichao Kang, Guanghui Xu, Zhengwu Cui, Yong Yu, Yang Wang, and Yongzheng Lu. 2023. "Influences of 13 Years New Conservation Management on Labile Soil Organic Carbon and Carbon Sequestration in Aggregates in Northeast China" Sustainability 15, no. 11: 8570. https://doi.org/10.3390/su15118570