Development of rill erosion on bare sloping farmland under natural rainfall conditions
نویسندگان
چکیده
Rill erosion plays an important role in soil erosion, and studying this process can provide a basis for controlling loss on sloping farmland. The objectives of study were to observe runoff sediment transport processes during two continuous intermittent natural rainfall events monitor the changing morphological characteristics rills within standard plot bare (20 m length, 5 width, slope 10°) at five successive observation times. We found that presented pattern with multiple peaks single or events. peak yield rates exhibited time-lag phenomenon 1?12 min compared instantaneous intensity. Rills occurred as strip-shapes, V-shapes, tree-branch-like distribution; their widths mainly 5–20 cm depths 0–10 cm. Compared our initial rill observation, mean depth increased by 227%, 26%, 6%, respectively, after four subsequent observations over period almost one month. Side-wall collapse was greater than downcutting middle (section II; 6.67–13.34 m), while reached minimum value lower III; 13.34–20 m). These findings help us understand mechanisms scientific modeling
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ژورنال
عنوان ژورنال: Environmental Earth Sciences
سال: 2022
ISSN: ['2199-9163', '2199-9155']
DOI: https://doi.org/10.1007/s12665-022-10383-z