WANG Yue-ling, WANG Si-cheng, CAI Jin-Jun, et al. Engineering Design and Application of Leveled Ditch for Surface Runoff Harvesting on Slope Land in Semiarid Loess Hilly Areas[J]. Bulletin of Soiland Water Conservation, 2012, 31(4): 147-150.
WANG Yue-ling, WANG Si-cheng, CAI Jin-Jun, et al. Engineering Design and Application of Leveled Ditch for Surface Runoff Harvesting on Slope Land in Semiarid Loess Hilly Areas[J]. Bulletin of Soiland Water Conservation, 2012, 31(4): 147-150.DOI:
In order to solve the problem of absent rationality and system in leveled ditch design for runoff har-vesting
the objectives
cross-section parameters
and havesting potential were studied for leveled ditch de-sign in both theory and experiments. The results show that in the growing seasons (March to September) of the 6 years from 2002 to 2008
water stored in the soil on the slope with leveled ditches was significantly higher than that on the natural slope
in the test rainfall intensity and rainfall
the intercepted runoff were 4.41
64.23
and 104.13 mm on a 25°slope with leveled ditches
and were 5.25
72.39 mm on a 35°slope with leveled ditches
respectively. The intercepting capacity per unit time increased with the increase of rain-fall intensity
reflecting the importance of high-intensity rainfall to surface runoff harvesting after slope transformation with leveled ditches.