水土保持学报2012，Vol.26Issue(1)：67-71,5.
高速公路边坡乡土灌木建植模式水土保持效益
Soil and Water Conservation Benefit of Different Localization Shrub Mode for Highway Side Slope
摘要
Abstract
It is principle important ecological mode in superhighway side slope protection that using localiza- tion shrubs to reconstruct plant communities. In this case, taking highway side slope in hilly areas in the cen- tral part of Sichuan province and the results of plant investigation in highway alignment as the example and foundation, three localization shrubs including N. affini, V. negundo, C. nepalensis and three herbs including S. viridis, I. lanceolatum, A. argyi were chose to plant with different mode and growth proportion. After one year, simulated rainfall experiment was set with constant precipitation （20 ram/rain） and time （20 min）. The results of feature of runoff and sediment yield indicated that, different plant furnishing modes showed significant benefit of water and soil conservation. In constant rainfall intensity, rainfall runoff duration was postponed about 1′ to 4′05″, the sediment yield reduced 6.56 g to 33.86 g. Moreover, the runoff and sediment yield of V. negundo＋S, viridis was lowest, 1 700 ml and 60.71 g respectively; the capacity of water and soil conservation of C. nepalensis＋A, argyi mode was lowest in shrub＋herb mixed modes, 1 920 ml（runoff） and 84.02 g （sediment yield） respectively. Therefore, V. negundo＋S, viridis mixed was the best local reconstruction mode and species in regard to water and soil conservation for highway side slope in hilly areas in the central part of Sichuan province, when there were same side slope condition and seed quantity.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/localization shrubs/runoff/sediment yield/water and soil conservation分类
农业科技引用本文复制引用
李妮,陈其兵,谭昌明..高速公路边坡乡土灌木建植模式水土保持效益[J].水土保持学报,2012,26(1):67-71,5.基金项目
国家“十一五”科技攻关支撑项目 （）
四川农业大学“211工程”双支计划 （）
