Studies on Soil and Water Conservation Functions of Litter Layers on Rocky Slope
In order to explore the soil and water conservation functions of litter layers on rocky slope, litter storage, water-holding capacity of litter, amount of soil erosion reduced by litter, the soil physical and soil chemical properties under litter layers had been measured on Dashuiniu hilllock in Shunde District of Foshan City in Guangdong Province.The results showed that the litter storage was 219.18 g/m2 in Dashuiniu hilllock.The saturated water-holding capacity of litter ranged from 64％ to 75％.Litter retarding effect on runoff was related to litter thickness and runoff depth, the time of runoff flow retarded by litter increased with the increase of litter thickness, the time of runoff flow retarded by litter decreased with the increase of runoff depth.Litter could increase soil antiscour ability compared with bare simulation slope, the litter of upper-slope, middle-slope and lower-slope could decrease more than 87.80 ％ of soil erosion amount under 30° simulation slope with 2 cm litter and 1 cm runoff depth.On the slope positions with more leguminous plants (lower-slope and upper-slope), the physical and chemical properties of soil were better than those of the slope positions with less leguminous plants (platform and middle-slope).
Dashuiniu hilllockrocky slopelitter layerwater-holding capacityphysical and chemical properties of soil
国家科技期刊平台
NSTL
万方数据
维普
