Simulation of rill erosion in black soil and albic soil during the snowmelt period

Figures & data

Table 1. Mechanical composition of the experimental soils.

Soil texture	Medium sand	Fine sand	Coarse silt	Physical sand	Medium silt	Fine silt	Clay	Physical clay
	1.00–0.25	0.25–0.05	0.05–0.01	>0.01	0.01–0.005	0.005–0.001	<0.001	<0.01
Black soil	0.5	4.2	26.7	31.4	10.3	15.5	42.8	68.6
Albic soil	12.43	2.37	31.92	46.72	7.22	11.51	34.55	53.28

Table 2. The factors and levels of the orthogonal experiment.

Levels	FT temperature (°C)	Number of cycles (times)	Soil water content (%)	Flow rate (L/min)	Soil thaw depth (cm)
1	−30∼3	5	20	1	1
2	−25∼5	10	25	2	2
3	−10∼7	15	30	3	3
4	−5∼13	20	35	4	4
5	−3∼15	30	40	5	5

Figure 1. Comparison of the WDRs of rills between the black soil and the albic soil.

Figure 2. Comparison of rill erosion between the black soil and the albic soil.