Vegetation-Erosion Dynamics - River Dynamics and Integrated River Management - page 113

2. From collected data the values of the parameters of the vegetation-erosion dynamics model were
obtained as follows: a = 0.02 (1/yr); c = 0.00001 (km 2 /t); b = 0.05 (1/yr); f = 50 (t/km 2 yr 2 ). Work out the
vegetation-erosion chart. At present, the vegetation cover is V = 5% and sediment yield by erosion is
E = 4,000 (t/km 2 yr). Indicate the location of the vegetation-erosion status on the chart, and suggest an
efficient strategy of vegetation improvement and erosion control (Accurate figures of reforestation and
erosion reduction are not required).
3. As shown in the lower diagram in the Figure the floodplain has been experiencing a siltation process
over the past 10 years. Analyze the diagram ad state the sedimentation process.
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