4种禾草混播植被在寒冷半干旱带的护坡性能研究

发布时间：2018-05-13 18:14

本文选题：禾本科植物 + 寒冷半干旱带　；参考：《内蒙古农业大学》2015年硕士论文

【摘要】：随着国家公路建设速度的加快,寻找适宜公路边坡的护坡植物以及相应的评价方法变得越来越重要,尤其是在我国寒冷半干旱带的应用较少。本文使用无芒雀麦(Bromus inermis Leyss)、冰草(Agropyrom cristaturm (L.)Gaertn)、披碱草(Elymus dahuricus Turcz)、老芒麦(Elymus sibiricus L) 4种禾本科植物进行混播植被的建植用于护坡效果试验,设计为15个混播组合,并利用AHP层次分析法对每个混播组合进行综合评分,以求找到最适宜寒冷半干旱带地区护坡最佳草种组合。利用Yaahp软件对基于AHP层次分析法的不同草种混播组合建立模型,并构建判断矩阵,通过层次单排序和总排序及其一致性检验,得到可以计算综合得分的评分系统。系统将最佳草种混播组合作为目标层；生态适应性、固土能力、保水能力和景观效果4项作为准则层；成坪速度、越冬率、综合抗逆性、株高、密度、盖度、根体积、根系分布情况、地下生物量、土壤含水量、抗冲刷能力、地上生物量、茎叶截留率、色泽、绿色期和均一性等16个影响因素作为指标层。使用该系统,对内蒙古土默特左旗哈素海环湖路路基边坡不同草种混播组合植被的护坡性能进行了综合评价分析。结果表明,在该地区本研究4个草种的15个组合处理中,最佳的组合为无芒雀麦、冰草、披碱草、老芒麦4种草种等比例混播的处理,最差的为老芒麦单播的处理。
[Abstract]:With the acceleration of national highway construction, it is becoming more and more important to find suitable slope protection plants and corresponding evaluation methods, especially in cold and semi-arid zones of China. In this paper, four species of gramineous plants, Bromus inermis Leyssus, Agropyrom cristaturm L.Gaertnus, Euphorbia dahuricus Turczia and Esylus sibiricus L), were used to establish and plant mixed gramineous plants for slope protection effect test, and were designed as 15 mixed sowing combinations. In order to find out the best combination of grass species for slope protection in cold and semi-arid zone, AHP analytic hierarchy process (AHP) was used to synthetically score each mixed sowing combination in order to find out the most suitable for slope protection in cold and semi-arid zone. By using Yaahp software to establish the model of different mixed seeding combinations based on AHP Analytic hierarchy process (AHP), and to construct the judgment matrix. Through the hierarchical single sort, the total sort and the consistency test, a scoring system can be obtained to calculate the comprehensive score. In the system, the best mixture of grass seed was taken as the target layer; the ecological adaptability, soil consolidation ability, water conservation ability and landscape effect were taken as criterion layer; the formation speed, overwintering rate, comprehensive resistance, plant height, density, coverage, root volume, overwintering rate, and root volume were used as criteria layer. Root distribution, underground biomass, soil water content, scour resistance, aboveground biomass, stem and leaf interception rate, color, green period and homogeneity were taken as index layers. Using this system, the slope protection performance of mixed vegetation of different grass species on the subgrade slope of Hazuhai Ring Lake Road in Tumert Banner, Inner Mongolia, was comprehensively evaluated and analyzed. The results showed that among the 15 combinations of 4 grass species in this area, the best combination was mixed seeding with different proportions, such as non-awn brome, ice grass, ephedrine and Laomangmai 4, and the worst one was single seeding of Laowang wheat.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S157;U416.14

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