Related Experiment Video
Updated: Feb 8, 2026
11:53
Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
Published on: December 9, 2012
13.5K
Modelling soil erosion in a Mediterranean watershed: Comparison between SWAT and AnnAGNPS models.
O M M Abdelwahab1, G F Ricci2, A M De Girolamo3
1Cairo University, Faculty of Agriculture, Agricultural Engineering Department, Cairo, Egypt.
Environmental Research
|June 24, 2018
Summary
This study compared the Soil and Water Assessment Tool (SWAT) and Annualized Agricultural Non-Point Source (AnnAGNPS) hydrological models in Italy. Both models accurately simulated streamflow and sediment load, identifying high erosion risk in the Carapelle basin.
Area of Science:
- Hydrology and Water Resources Management
- Environmental Modeling and Simulation
- Soil Erosion and Sediment Transport
Background:
- Accurate hydrological basin-scale modeling is crucial for effective water resource management and erosion control.
- The Soil and Water Assessment Tool (SWAT) and Annualized Agricultural Non-Point Source (AnnAGNPS) are widely used models for simulating hydrological processes and sediment loads.
- Comparative studies are needed to guide model selection based on data availability, ease of use, and performance in specific environmental contexts.
Purpose of the Study:
- To compare the performance of SWAT and AnnAGNPS in simulating hydrology and sediment load in a Mediterranean watershed (Carapelle, Southern Italy).
- To evaluate input data requirements, preparation effort, strengths, weaknesses, ease of use, and limitations of both models.
- To assess the erosion risk within the Carapelle basin based on model simulations and compare results with other European erosion models.
Main Methods:
- Calibration and validation of SWAT and AnnAGNPS models at a monthly time scale for hydrology and sediment load.
- Utilized a four-year observational dataset including streamflow and suspended sediment concentrations from the Carapelle watershed.
- Compared model-simulated sediment yields with estimates from European-scale models: PESERA and RUSLE2015.
Main Results:
- Both SWAT and AnnAGNPS demonstrated fair to very good correlation for streamflow and satisfactory performance for sediment load simulation.
- Simulated sediment loads were comparable to measured values, with SWAT and AnnAGNPS showing slight overestimation and underestimation, respectively, in the wettest year.
- The Carapelle basin was identified as having moderate to high erosion risk, with simulated average gross erosion by RUSLE2015 being comparable to SWAT and AnnAGNPS sediment yields.
Conclusions:
- SWAT and AnnAGNPS are valuable tools for hydrological and sediment load simulation in Mediterranean watersheds, despite minor differences in performance.
- The study provides practical insights for researchers and water managers in selecting and applying these models effectively.
- The findings highlight significant erosion risks in the studied basin, underscoring the need for targeted soil conservation strategies.
More Related Videos
08:09Measuring and Mapping Patterns of Soil Erosion and Deposition Related to Soil Carbonate Concentrations Under Agricultural Management
Published on: September 12, 2017
12.3K
09:44Use of Principal Components for Scaling Up Topographic Models to Map Soil Redistribution and Soil Organic Carbon
Published on: October 16, 2018
10.7K
Related Concept Videos
01:26Pharmacokinetic Models: Comparison and Selection Criterion
367
Physiological and compartmental models are valuable tools used in studying biological systems. These models rely on differential equations to maintain mass balance within the system, ensuring an accurate representation of the dynamic processes at play.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
Physiological models take a detailed approach by considering specific molecular processes. They can predict drug distribution, metabolism, and elimination changes, providing a comprehensive understanding of how drugs interact with the body.
367
02:23The Soil Ecosystem
24.9K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
24.9K
02:00Molecular Models
43.8K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
43.8K
02:57The Sense of Self: Reflected Self-Appraisal and Social Comparison
56.1K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.1K
02:18The Bohr Model
81.0K
Following the work of Ernest Rutherford and his colleagues in the early twentieth century, the picture of atoms consisting of tiny dense nuclei surrounded by lighter and even tinier electrons continually moving about the nucleus was well established. This picture was called the planetary model since it pictured the atom as a miniature “solar system” with the electrons orbiting the nucleus like planets orbiting the sun. The simplest atom is hydrogen, consisting of a single proton as the...
81.0K
01:13Multiple Comparison Tests
4.5K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
4.5K