The Estimation of Rainfall Runoff Threshold and Measurement of Fertilizer Benefit of Typical Vegetation Types in Daqing Mount
By the method of the rainfall and artificial simulation of rainfall,this paper investigates the canopy interception and the litter and soil water holding capacity of different types of vegetation in Daqing Mountain.When the simulated rainfall intensity is 0.60 ～ 0.65 mm/min,the Runoff rainfall intensity of the arbor forest is 11.018 ～ 17.080 mm,the Runoff rainfall intensity of the shrub forest is 11.609 ～ 13.353 mm,he Runoff rainfall intensity of the barren grassland slope is 7.592 ～ 11.336 mm.When the simulated rainfall intensity is 0.80 ～ 0.85 mm/min,the Runoff rainfall intensity of the arbor forest is 7.274 ～ 12.7268 mm,the Runoff rainfall intensity of the shrub forest is 7.943 ～ 9.353 mm,he Runoff rainfall intensity of the barren grassland slope is 4.328 ～ 6.496 mm.Based on the determination of soil nutrients,we calculated the soil loss value of artificial Chinese pine forest,birch forest,Ostryopsis shrub and grass slope under different rainfall intensities.The soil loss value of different vegetation types respectively are 1.39 ～ 136.37 RMB/hm2,8.24 ～ 113.37 RMB/hm2,28.11 ～59.11RMB/hm2 and 93.92 ～ 107.61 RMB/hm2.
国家科技期刊平台
NSTL
万方数据
维普
