ZHANG Chun-lin,ZHANG Hong-jiang,JIANG Yu-lin,et al.Study on Soil Erosion Characteristics and Soil Conservation Effect on Embankment Slope of Expressway[J].Research of Soil and Water Conservation,2007,14(03):367-370,373.
高速公路路堤边坡土壤侵蚀特征与保土效益研究
- Title:
- Study on Soil Erosion Characteristics and Soil Conservation Effect on Embankment Slope of Expressway
- Keywords:
- expressway; arching frame beam; soil erosion
- 分类号:
- S157.1;U412
- 摘要:
- 为研究高速公路路堤边坡土壤侵蚀特征以及拱形框架梁植物防护的水土保持效益，选取了有代表性的三类植物配置进行定位观测和分析研究.结果表明：(1)降雨量与土壤侵蚀量呈显著的正相关关系;(2)在相同降雨条件下，路堤弃土弃渣边坡坡面的土壤平均侵蚀量为26 796.7 t/km2，而拱形框架梁边坡三个实验区的土壤平均侵蚀量为19 306.4 t/km2，表明框架梁植物防护措施明显地减少了边坡土壤侵蚀量;(3)在草本混播、草灌混播和草灌乔混播三类实验区中，其土壤侵蚀量分别为19 206.4 t/km2、19 806.6 t/km2和18 906.3 t/km2，表明在植物生长初期一年内乔灌草混播类型保土效益优于草本混播和草灌混播类型.
- Abstract:
- For studying soil erosion characteristics on embankment slope of expressway and soil and water conservation benefit of the combination between arching frame beam and vegetation,three representative plant allocations were selected to observe and research.The result shows as following:(1) It’s significant relationship between precipitation and the amounts of the erosion;(2) Under the same rainfall term,the average amounts of soil erosion is 26 796.7 t/km2 on embankment slope of expressway,but the average amounts of soil erosion is 19 306.4 t/km2 on frame beam slope.It shows that vegetation protection measures with arching frame beam reduce clearly the amounts of the erosion.(3) In three experimental areas,the degree of soil erosion is different,the data expresses that the arbor-shrub-herb combination appear the better soil conservation benefit.
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备注/Memo
收稿日期:2006-11-9
基金项目:交通部西部交通科技项目"公路路域与生态工程技术研究(20033182233)"的部分研究内容
作者简介:张春林(1981- )，男，硕士生，主要研究方向：生态环境工程;