作 者：
彭珍宝;旷建军;袁正科;钟志凌;范水平;谭星林
单 位：
湖南省林业科学院;湖南省安化县林业局;湖南省长沙市农产品检测中心;湖南省南岳树木园
摘 要：
结合效益定位观测,研究了日降水量对南方丘岗幼林地水土流失量的影响,结果表明,在防护林配置模式下,红壤区幼林地(造林前3年)土壤流失量随日降水量增大呈稳定增加的变化趋势,土壤流失量在日降水等级上呈正态分布,以10.1~35.0 mm的日降水等级对年泥沙流失总量贡献最大,达54.2%~72.8%;紫色土林地各个日降水量等级的土壤流失量均大于红壤林地。3种不同处理措施的土壤流失量排列顺序为:红壤坡改梯经济林不间种模式>生物埂造林模式>防护林模式;水平生物埂造林模式在日降水量小于35.1mm时,其土壤流失量小于防护林模式,大于35.1 mm时,要大于防护林模式。
译 名：
Effect of Daily Precipitation on Water and Soil Erosion in Young Forest on Hilly Land in the Southern China
作 者：
PENG Zhen-bao1,KUANG Jian-jun1,YUAN Zheng-ke2,ZHONG Zhi-ling3,FAN Shui-ping1,TAN Xing-lin4(1.Nanyue Arboretum of Hunan,Hengyang 421900,China;2.Hunan Forestry Academy,Changsha 410004,China;3.Changsha Agricultural Product Inspection Center of Hunan,Changsha 410007,China;4.Anhua Forestry Bureau of Hunan,Anhua 413500,China)
关键词：
daily precipitation;water and soil erosion;young forest;hilly land in the Southern China
摘 要：
Positioning observation on effect of daily precipitation on water and soil erosion in different young forests on hilly land in the southern China showed that water and soil erosion and sand content in 4-year protection forest on red soil was increased with daily precipitation quantity.The daily precipitation of 10.1-35.0mm had the great effect on soil erosion,topped to 54.2% ~ 72.8%.With the increase of daily precipitation,soil erosion of forest protection on purple soil was greater than that on red soil.When the daily precipitation was less than 35.1mm,soil erosion of terrace bio-embankment was less than that of protection forest,but if the precipitation was greater than 35.1mm,soil erosion was greater than that of protection forest.The result showed also that soil erosion in economic forest was larger than that in terrace bio-embankment,that in protection forest was the smallest.
