| چکیده انگلیسی مقاله |
An experimental landscape forced by rainfall and baselevel adjustment to form a rill network is subjected to quantitative study of growth mode using fractal dimension. This study also sought to monitor temporal variations of sediment production along with the evolution of drainage network. According to the present simulation and quantification of provided growth models, generally, three growth mode based on initial topography exhibited: (1) convex upward curve, where the values increase quickly with time, then level off it seems this growth mode seen in steeper surfaces, (2) concave upward curve, where the values change initially slowly with time, then increase rapidly, and (3) straight line curve where the values increase with time at the same rate. Sediment production variation of present simulation is proportional to growth mode. Sediment efflux spiked after baselevel adjustments then declined and did not increase even with rainfall continuation. These findings are important for land managers to prioritize measures on steeper slopes specially farmers. |
