Study on the runoff sediment transport rate of two planting modes under
the influence of rainfall
Abstract
:In order to explore the impact of ecological planting pattern on
runoff sediment transport rate(T 2), this study in two
planting modes with a single planting of Prunella vulgaris (A) and P.
vulgaris and earthworms (B) were investigated through simulated rainfall
experiments in the field. The results showed that: 1) T
2 decreased first and then stabilized with the rainfall
duration,which is dominated by the composition of soil particle size and
runoff depth;2) T 2 under gentle slope and steep slope
conditions is greatly affected by rainfall intensity and slope,
respectively; 3) T 2 ,which has a good correlation with
runoff separation rate (D 2), needs to be explained in
conjunction with soil properties or raindrop kinetic energy. The main
controlling factors of T 2 in bare slope, B, A are
raindrop kinetic energy, D 2, and organic matter, which
explain 93.10%, 95.76%, and 98.65%.Compared with B, A has obvious
economic and ecological value.