Effects and mechanisms on reducing soil and water loss in hedgerow ecosystems ( 1 ) hedgerows are capable of retaining water and soil under actual and simulated rainfall conditions . rain erosive power and rainfall were higher in june and august than in other months in 2001 植物篱笆生态系统减水减沙效应及机理( 1 )自然降雨和人工降雨条件下,坡耕地植物篱笆均具有明显的水土保持效应,而且这种效应在植物篱笆的生长后期更为突出。