Soil and Water Conservation Effects of Contour Reverse Slope Terraces on Red Clay Sloping Farmland against Short and Heavy Rainfall

Table 9

Regulating ratios in sediment of contour reverse slope terrace.

Rainfall intensity (mm/h)	Bedrock porosity (%)	Surface cumulative sediment modulus ()				Underground cumulative sediment modulus ()
		Contour reverse slope terrace	Bare slope	Regulating ratio	Average regulating ratio	Contour reverse slope terrace	Bare slope	Regulating ratio	Average regulating ratio
15	1	2.62	4.84	-46%	-70%	0.11	0.09	23%	39%
	3	0.27	1.60	-83%		0.27	0.20	33%
	5	0.22	1.20	-81%		0.36	0.22	62%
30	1	12.73	32.96	-61%	-65%	0.24	0.18	36%	45%
	3	7.13	16.29	-56%		0.29	0.20	44%
	5	0.64	2.96	-78%		0.44	0.29	53%
50	1	38.07	54.20	-30%	-54%	0.31	0.22	41%	60%
	3	10.16	29.07	-65%		0.38	0.24	57%
	5	7.76	23.89	-68%		0.96	0.64	80%