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

Table 5

Surface and underground cumulative runoff modulus and the percentages on the bare slope and contour reverse slope.

Rainfall intensity (mm/h)	Bedrock porosity (%)	Contour reverse slope terrace				Bare slope
		(ml/m^2)	(ml/m^2)	(%)	(%)	(ml/m^2)	(ml/m^2)	(%)	(%)
15	1	1601.33	1743.73	47.9	52.1	4429.53	1268.73	77.7	22.3
	3	131.89	3088.62	4.1	95.9	344.31	2247.89	13.3	86.7
	5	45.80	3146.64	1.4	98.6	350.49	2490.49	12.3	87.7
30	1	5853.67	2915.98	66.7	33.3	12616.27	1479.73	89.5	10.5
	3	4905.51	4071.64	54.6	45.4	8686.82	1608.98	84.4	15.6
	5	1585.96	4936.87	24.3	75.7	3967.47	3775.18	51.2	48.8
50	1	8907.80	4111.11	68.4	31.6	19207.22	2164.36	89.9	10.1
	3	7278.82	3574.50	67.1	32.9	13699.38	2577.56	84.2	15.8
	5	6357.71	4404.00	59.1	40.9	10752.33	4103.78	72.4	27.6

Note: = surface cumulative runoff modulus; = underground cumulative runoff modulus; = surface runoff proportion; = underground runoff proportion.