There was significant positive correlations not only between the runoff of different treatments and rainfall , between barren slope and ixeris denticulata treatme 在60ffiffi ? h ’ 、 120iffi ? h “ ’沖刷雨強下,植物籬笆根系密度、土壤容重與土壤抗沖性極顯著相關(guān),而在雨強為180m 。
There was a highly significant correlation between the highest rain intensity in 30 minutes ( abbreviated as i30 ) and rv , and no significant correlation between rainfall capacity and 130 . the soil conservation effects were better than the water conservation effects . the order of importance for water and soil conservation effects in different treatments was eragrostis curvula , kummerowia atriata , ixeris denticulata , with the most significantly positive correlation between each runoff and soil loss 與裸坡相比,嚴(yán)重侵蝕地上植物籬笆的保土效果比保水效果更明顯,其中畫眉草( eragrostiscurvula )水土保持能力最強,雞眼草( kummerowiaatriata )次之,苦荬菜( ixerisdenticulata )只具有保土作用;同時每次降雨產(chǎn)生徑流量與侵蝕量之間為極顯著相關(guān)關(guān)系。