This figure shows the observed sediment deposition volumes as a function of downstream change in stream power (here assessed as a function of Area and Channel Slope). This concept is used as a surrogate for topographically controlled change in sediment transport capacity at surveyed gully segments. Our results clearly show that sediment deposition in gully beds occurs even when the topographically controlled sediment transport potential of the channel is increasing. This indicates that local gully topography alone cannot explain the observed deposition patterns. Our observations from the 138 gully segments indicate that the ground vegetation cover strongly controls sediment deposition in steep gully beds. (Note that sediment deposition values are plotted on a logarithmic scale)
Image 14962 is a 535 by 718 pixel WebP
Uploaded:
Apr28 09
