Variations in Soil Erosion Resistance of Gully Head Along a 25-Year Revegetation Age on the Loess Plateau
Abstract
:1. Introduction
2. Material and Method
2.1. Study Area
2.2. Sampling Sites Selection
2.3. Sampling and Measurement of Soil and Root
2.4. Hydraulic Flume Experiments
2.5. Parameter Calculation after the Experiments
2.6. Statistical Analysis and Plotting
3. Results and Discussion
3.1. Effect of Revegetation on Soil and Root Properties of Gully Heads
3.2. Effect of Revegetation Age on Soil Detachment of Gully Heads
3.3. Response of Soil Detachment to Soil Properties
3.4. Response of Soil Loss of Gully-Head to Root Traits
3.5. Effect of Revegetation Age on Soil Erosion Resistance of Gully Head
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Site Code | Restoration Age (yr) | Slope (°) | Coverage (%) | Altitude (m) | Dominant Communities | Main Companion Species |
---|---|---|---|---|---|---|
SF | 0 | 2.4 | — | 1420 | Zea mays | Setaria viridis |
NR3 | 3 | 2.9 | 72.3 | 1405 | Artemisia capillaris | Artemisia sacrorum |
NR10 | 10 | 2.4 | 80.8 | 1401 | Artemisia sacrorum | Artemisia capillaris |
NR18 | 18 | 3.2 | 93.4 | 1390 | Artemisia sacrorum | Artemisia capillaris |
NR25 | 25 | 3.1 | 91.2 | 1380 | Bothriochloa ischaemum | Artemisia sacrorum + Lespedeza daurica |
Source | SS | Df | MS | F | p-Value |
---|---|---|---|---|---|
Revegetation age | 1.08 × 10−4 | 4 | 2.69 × 10−5 | 151.44 | <0.001 |
Unit width discharge | 1.75 × 10−4 | 4 | 4.38 × 10−5 | 246.48 | <0.001 |
Revegetation age × Unit width discharge | 2.29 × 10−5 | 16 | 1.43 × 10−6 | 8.07 | <0.001 |
Error | 1.33 × 10−5 | 75 | 1.78 × 10−7 | ||
Total | 0.0011 | 100 |
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Chen, Z.; Guo, M.; Wang, W. Variations in Soil Erosion Resistance of Gully Head Along a 25-Year Revegetation Age on the Loess Plateau. Water 2020, 12, 3301. https://doi.org/10.3390/w12123301
Chen Z, Guo M, Wang W. Variations in Soil Erosion Resistance of Gully Head Along a 25-Year Revegetation Age on the Loess Plateau. Water. 2020; 12(12):3301. https://doi.org/10.3390/w12123301
Chicago/Turabian StyleChen, Zhuoxin, Mingming Guo, and Wenlong Wang. 2020. "Variations in Soil Erosion Resistance of Gully Head Along a 25-Year Revegetation Age on the Loess Plateau" Water 12, no. 12: 3301. https://doi.org/10.3390/w12123301