Effects of Land Use Change on Soil Aggregate Stability and Erodibility in the Karst Region of Southwest China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area
2.2. Experimental Design
2.3. Soil Sampling and Analysis
2.4. Calculation of Soil Aggregate Stability and Erodibility
2.5. Statistical Analysis
3. Results
3.1. Impact of Land Use Type on Physical and Chemical Properties
3.2. Distribution Characteristics of Soil Water-Stable Clusters under Land Use Practices
3.3. Differences in Soil Structural Stability under Land Use Patterns
3.4. Effect of Land Use Practices on Soil Erodibility (K)
3.5. Correlation of Soil Aggregate Stability, Erodibility, and Soil Physical and Chemical Properties
4. Discussion
4.1. Impact of Land Use Patterns on Agglomerate Distribution
4.2. Impact of Different Land Uses on Stability
4.3. Study of Soil Erodibility under Different Land Uses
4.4. Correlation of Soil Aggregate Characteristics with Erodibility
4.5. Key Factors Affecting the Stability and Erodibility of Soil Aggregates
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Site Code | Altitude (m) | Slope (°) | Aspect | Planting Year (a) | Average Tree Height (m) | Vegetation Coverage (%) | Dominant Community |
---|---|---|---|---|---|---|---|
Y6th-zr | 1446 | 28 | West | 6 | 1.5 | 76 | Fraxinus chinensis Roxb, Hydrangea aspera, Artemisia argyi, Artemisia dubia |
Y6th-jgl | 1444 | 25 | West | 6 | 1.8 | 53 | Kiwi |
Y7th-rgl | 1463 | 24 | Southeast | 7 | 6 | 68 | Cunninghamia lanceolata, Hippophage rhamnoides, Pyracantha fortuneana, Stenoloma Fee |
Y38th-y | 1395 | 20 | West | 38 | - | - | Maize |
Y38th-y + b | 1441 | 24 | North | 38 | - | - | Maize, Cabbage |
Site Code | Fertilizers Rate (kg/ha) | Application Methods | |||||
---|---|---|---|---|---|---|---|
N | Compound Fertilizer | ||||||
Sowing Period | Seedling Stage | Growing Period | Sowing Period | Seedling Stage | Growing Period | ||
Y6th-zr | 0 | 0 | 0 | 0 | 0 | 0 | - |
Y6th-jgl | 0 | 0 | 0 | 0 | 0 | 2300 | Hole fertilization |
Y7th-rgl | 0 | 0 | 0 | 0 | 0 | 0 | - |
Y38th-y | 0 | 12.5 | 25 | 750 | 37.5 | 0 | Hole fertilization, surface fertilization |
Y38th-y + b | 0 | 12.5 | 25 | 750 | 37.5 | 0 | Hole fertilization, surface fertilization |
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Li, M.; Wang, K.; Ma, X.; Fan, M.; Song, Y. Effects of Land Use Change on Soil Aggregate Stability and Erodibility in the Karst Region of Southwest China. Agronomy 2024, 14, 1534. https://doi.org/10.3390/agronomy14071534
Li M, Wang K, Ma X, Fan M, Song Y. Effects of Land Use Change on Soil Aggregate Stability and Erodibility in the Karst Region of Southwest China. Agronomy. 2024; 14(7):1534. https://doi.org/10.3390/agronomy14071534
Chicago/Turabian StyleLi, Meiting, Keqin Wang, Xiaoyi Ma, Mingsi Fan, and Yali Song. 2024. "Effects of Land Use Change on Soil Aggregate Stability and Erodibility in the Karst Region of Southwest China" Agronomy 14, no. 7: 1534. https://doi.org/10.3390/agronomy14071534