What question did this study set out to answer?

Establish a framework to parameterize the physically based EROSION 3D model in a data-scarce catchment and quantify spatial patterns of sediment erosion and deposition.

January 20, 2016Land Degradation and Development

Sediment Reallocations due to Erosive Rainfall Events in the Three Gorges Reservoir Area, Central China

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Establish a framework to parameterize the physically based EROSION 3D model in a data-scarce catchment and quantify spatial patterns of sediment erosion and deposition.
Applied digital soil mapping techniques to generate distributed soil property datasets for the EROSION 3D model in a small mountainous catchment.
Monitored rainfall, runoff, and sediment yield continuously over a 12-month period to calibrate and validate the model.
Individual model error averaged 7.5% for large events (sediment yield > 1 Mg) versus 36.2% for small events, with a few large events generating 80.3% of total annual sediment yield.
Erosion occurred across 11.1% of the catchment at an average rate of 49.9 Mg ha⁻¹, concentrated primarily on corn-rapeseed (69.2%) and potato-cabbage (69.1%) crop rotations.
Deposition occurred across 11.0% of the catchment area, predominantly affecting infrastructure (41.0%), grassland (18.4%), and cropland (corn-rapeseed: 13.6%, potato-cabbage: 11.3%).

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Implication

Hydrological modeling reveals severe cropland erosion during major rainfall events, highlighting the disproportionate impact of infrequent storms on annual catchment sediment yields.

Cite This Study

Stumpf et al. (2016) studied this question.

synapsesocial.com/papers/6a714250a528af2d65c3fe1c https://doi.org/10.1002/ldr.2503

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Implication

Hydrological modeling reveals severe cropland erosion during major rainfall events, highlighting the disproportionate impact of infrequent storms on annual catchment sediment yields.

Sediment Reallocations due to Erosive Rainfall Events in the Three Gorges Reservoir Area, Central China

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Discussion

Implication

Cite This Study

Sediment Reallocations due to Erosive Rainfall Events in the Three Gorges Reservoir Area, Central China

Key Points

Discussion

Implication

Cite This Study

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