Identifying Human-Induced Spatial Differences of Soil Erosion Change in a Hilly Red Soil Region of Southern China
Abstract
:1. Introduction
2. Study Area and Materials
2.1. Study Area
2.2. Materials
3. Methods
3.1. RUSLE Model
3.2. Gravity-Center Model of Soil Erosion
3.3. Gravity-Center’s Migration VECTOR model
3.4. Contribution Rate Decomposition Model
4. Results
4.1. Regional SE Change
4.2. Spatial Pattern of Regional SE Change
4.3. Spatial Differences of SE Change
4.3.1. Spatial Differences of SE Change under Natural and Human Influence
4.3.2. Human-Induced Spatial Differences of SE Change
5. Discussion
6. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Name | Data Type | Time | Scale/Resolution | Data Sources |
---|---|---|---|---|
Boundary of Jiangxi province and cities | SHP | 2010 | 1:4,000,000 | Resources and Environmental Scientific Data Center (RESDC), Chinese Academy of Sciences (CAS) |
Boundary of watershed | SHP | 2008 | 1:4,000,000 | RESDC |
Land use | grid | 1990/2015 | 1000 m | RESDC |
DEM | grid | 2000 | 30 m | RESDC |
Rainfall data | excel | 1990/2015 | / | RESDC |
Soil database | SHP | 1990s | 1:1,000,000 | RESDC |
Soil texture data | grid | 1990s | 1000 m | RESDC |
Soil carbon pool | grid | 1980s–1990s | 1000 m | RESDC |
NDVI | grid | 1990/2015 | 1000 m | RESDC |
SEM(Mg/(km2·a)) | Grade | Grade Value |
---|---|---|
<500 | Tolerable | 1 |
500–2500 | Slight | 2 |
2500–5000 | Medium | 3 |
5000–8000 | Strong | 4 |
8000–15,000 | Very Strong | 5 |
>15,000 | Destructive | 6 |
City Name | 1990SEM_Mean (Mg/(km2·a)) | 2015SEM_Mean (Mg/(km2·a)) | Change (%) |
---|---|---|---|
Fuzhou | 1024.22 | 236.13 | −76.94 |
Ganzhou | 1050.14 | 322.88 | −69.25 |
Jian | 877.62 | 193.36 | −77.96 |
Jingdezhen | 860.53 | 212.03 | −75.36 |
Jiujiang | 790.06 | 439.97 | −44.31 |
Nanchang | 370.11 | 85.85 | −76.80 |
Pingxiang | 873.23 | 377.91 | −56.72 |
Shangrao | 732.01 | 357.71 | −51.13 |
Xinyu | 576.42 | 301.67 | −47.66 |
Yichun | 589.14 | 204.95 | −65.21 |
Yingtan | 1036.56 | 185.49 | −82.10 |
Longitude | Latitude | |
---|---|---|
Rainfall impact | 3.1 | 0.49 |
Human impact | −2.1 | 0.51 |
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Huang, D.; Yang, X.; Cai, H.; Xiao, Z.; Han, D. Identifying Human-Induced Spatial Differences of Soil Erosion Change in a Hilly Red Soil Region of Southern China. Sustainability 2019, 11, 3103. https://doi.org/10.3390/su11113103
Huang D, Yang X, Cai H, Xiao Z, Han D. Identifying Human-Induced Spatial Differences of Soil Erosion Change in a Hilly Red Soil Region of Southern China. Sustainability. 2019; 11(11):3103. https://doi.org/10.3390/su11113103
Chicago/Turabian StyleHuang, Dong, Xiaohuan Yang, Hongyan Cai, Zuolin Xiao, and Dongrui Han. 2019. "Identifying Human-Induced Spatial Differences of Soil Erosion Change in a Hilly Red Soil Region of Southern China" Sustainability 11, no. 11: 3103. https://doi.org/10.3390/su11113103