An Eco-Hydrological Model-Based Assessment of the Impacts of Soil and Water Conservation Management in the Jinghe River Basin, China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Site Description
2.2. RHESSys Model
2.3. Model Modification
2.3.1. In-Stream Routing
Item | Information |
---|---|
Overall reaches | Number of stream reaches |
Reach | Reach ID, bottom width, top width, max height, slope, Manning roughness, length, Numbers of intersecting units, Numbers of upstream reaches, Number of downstream reaches |
Intersecting unit | Patch ID, Zone ID, Hill ID |
Upstream reach | Reach ID |
Downstream reach | Reach ID |
2.3.2. Reservoirs Sub-Model
2.3.3. SWCE
2.4. Data
2.5. Soil and Water Conservation Measures
Categories | 1 | 2 | 3 | 4 | 5 | 6 |
---|---|---|---|---|---|---|
Terrace land area ratio | <0.04 | 0.04–0.06 | 0.06–0.08 | 0.08–0.12 | 0.12–0.2 | 0.25 |
Detention storage capacity (m) | 0.005 | 0.0065 | 0.009 | 0.0125 | 0.02 | 0.03 |
2.6. Model Parameterization and Calibration
2.7. Model Verification Method
2.8. Model Scenarios
3. Results and Discussion
3.1. Model Verification
3.2. Streamflow Decrease and Other Impacts
3.3. Impacts of Vegetation Changes
Item | 1981–1990 | 1991–2000 | 2001–2010 | 1981–2010 |
---|---|---|---|---|
Vegetation change impacts (Scenario 1–Scenario 2) | 0.002 (0.1%) | 0.043 (3.3%) | 0.036 (2.7%) | 0.027 (1.8%) |
SWCE impacts (Scenario 2–Scenario 3) | 0.132 (7.3%) | 0.054 (4.2%) | 0.100 (7.7%) | 0.095 (6.5%) |
Total SWC impacts (Scenario 1–Scenario 3) | 0.134 (7.4%) | 0.097 (7.5%) | 0.136 (10.4%) | 0.122 (8.3%) |
3.4. SWCE Impacts
3.5. Integrated Impacts
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Peng, H.; Jia, Y.; Tague, C.; Slaughter, P. An Eco-Hydrological Model-Based Assessment of the Impacts of Soil and Water Conservation Management in the Jinghe River Basin, China. Water 2015, 7, 6301-6320. https://doi.org/10.3390/w7116301
Peng H, Jia Y, Tague C, Slaughter P. An Eco-Hydrological Model-Based Assessment of the Impacts of Soil and Water Conservation Management in the Jinghe River Basin, China. Water. 2015; 7(11):6301-6320. https://doi.org/10.3390/w7116301
Chicago/Turabian StylePeng, Hui, Yangwen Jia, Christina Tague, and Peter Slaughter. 2015. "An Eco-Hydrological Model-Based Assessment of the Impacts of Soil and Water Conservation Management in the Jinghe River Basin, China" Water 7, no. 11: 6301-6320. https://doi.org/10.3390/w7116301