安徽农业科学2012，Vol.40Issue(3)：1621-1623,1864,4.
高速公路边坡不同乡土灌木建植模式的产流·产沙特征研究
Features of Runoff and Sediment Yield of Different Shrub Combination Modes for Highway Side Slope in Hilly Areas of Central Sichuan Province
摘要
Abstract
[ Objective ] Indigenous plants with favorable water and soil conservation effects were screened for the shrub planting. [ Method ] Suining-Ziyang-Meishan Highway in the hilly areas of central Sichuan Province was taken for example, through sorting out plant species investigated in the route planning,3 indigenous shrub species (Neosinocalamus affinis,Vitex negundo and Coriaria nepalensis) and 3 indigenous herbaceous species (Setaria viridis,Miscanthus floridulus,Artemisia argyi) were selected. Rainfall simulation experiment was adopted to compare runoffs and sediment yields of different combination modes and ratios as well as the study plot under constant rainfall intensity (20 mm/min). [ Result ] Different combination modes under constant rainfall intensity all show better water and soil conservation effects than that of control group. For example, runoff appear 1' -4 '05 " later, sediment yield reduces by 6. 56 - 33. 86 g respectively. Among all combination modes, runoff and sediment yield shows great difference after 20 min of constant rainfall, V. Negundo + S. Viridis has the lowest runoff ( 1 700 ml) and sediment yield (60.71 g) ; C. Nepalensis + A. Argyi has the highest runoff (1,920 ml) and sediment yield (84. 02 g). [Conclusion] Given the same planting conditions such as side slope and seeding quantity, and also the same planting techniques, in the hilly areas of central Sichuan Province,the combination of V. Negundo and S. Viridis can greatly improve the water and soil conservation capacity of highway.关键词
高速公路边坡/乡土灌木/产流/产沙/水土保持Key words
Highway side slope/ Indigenous shrub/ Runoff yield/ Sediment yield/ Water and soil Conservation分类
建筑与水利引用本文复制引用
李妮,陈其兵,谭昌明..高速公路边坡不同乡土灌木建植模式的产流·产沙特征研究[J].安徽农业科学,2012,40(3):1621-1623,1864,4.基金项目
国家"十一五"科技攻关支撑项目(2006BAC01A11) （2006BAC01A11）
四川农业大学211工程双支计划. （）
