Journal
REMOTE SENSING
Volume 14, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/rs14102468
Keywords
process-based soil erosion model; remote sensing; photogrammetric methods; tracing; soil surface measurement; soil assessment; soil erosion
Categories
Funding
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [KA 5272/1-1, EL 926/3-1, 405774238]
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Soil erosion modelling tools and assessment techniques play a crucial role in investigating soil erosion processes and predicting their impacts. However, current models still have limitations and require further development and improvement.
To investigate relevant processes as well as to predict the possible impact of soil erosion, many soil erosion modelling tools have been developed. The most productive development of process-based models took place at the end of the 20th century. Since then, the methods available to observe and measure soil erosion features as well as methods to inter- and extrapolate such data have undergone rapid development, e.g., photogrammetry, light detection and ranging (LiDAR) and sediment tracing are now readily available methods, which can be applied by a broader community with lower effort. This review takes 13 process-based soil erosion models and different assessment techniques into account. It shows where and how such methods were already implemented in soil erosion modelling approaches. Several areas were found in which the models miss the capability to fully implement the information, which can be drawn from the now-available observation and data preparation methods. So far, most process-based models are not capable of implementing cross-scale erosional processes and can only in parts profit from the available resolution on a temporal and spatial scale. We conclude that the models' process description, adaptability to scale, parameterization, and calibration need further development. The main challenge is to enhance the models, so they are able to simulate soil erosion processes as complex as they need to be. Thanks to the progress made in data acquisition techniques, achieving this aim is closer than ever, if models are able to reap the benefit.
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