Abstract: Studying the impact of vegetation blanket coverage measures on the growth characteristics of spray plants is of great significance for the later maintenance of ecological restoration along the Winter Olympics corridor,and can provide important reference for implementing the “Green Olympics” initiative. Four types of plants,including Lolium multiflorum Lam,Medicago sativa,Amorpha fruticosa,and Lespedeza bicolor,were selected as the research objects under vegetation blankets. Planting trough spraying experiments were conducted on artificially constructed slopes to investigate the effects of six blanket planting measures on the growth characteristics of sprayed plants on shady and sunny slopes. Research has shown that:(1) Vegetation blanket coverage had an inhibitory effect on the number of plant seedlings,and straw vegetation blanket had a greater inhibitory effect on seedling emergence;(2) Covering both vegetation blankets can significantly promote an increase in plant height,aboveground biomass,and vegetation coverage on sunny slopes. However,to increase vegetation coverage on shady slopes,a straw coconut silk mixed vegetation blanket should be laid;(3) The entropy weight and TOPSIS method was used for comprehensive evaluation,and it was found that laying a 200 g·m^-2 straw vegetation blanket on the sunny slope had the best promoting effect on plant growth,while laying a 200 g·m^-2 straw coconut silk mixed vegetation blanket on the shady slope was more optimal. The research results have a positive effect on the correct selection of vegetation blanket measures for rapid construction of slope vegetation.

Key words: Plant growth status, Exposed slope, Vegetation blanket, Restoration effect

摘要： 研究植被毯覆盖措施对喷播植物生长特性的影响对于冬奥廊道沿线生态修复的后期养护具有重要意义，可为落实“绿色办奥”举措提供重要参考。以植被毯覆盖下的黑麦草(Lolium multiflorum Lam)、紫花苜蓿(Medicago sativa)、紫穗槐(Amorpha fruticosa)、胡枝子(Lespedeza bicolor)四种植物为研究对象，在人工修筑边坡进行种植槽喷播试验，探究阴阳坡6种植被毯措施对喷播植物生长特性的影响。研究表明：(1)纤维植被毯覆盖对植物出苗数具有阻碍作用，且秸秆植被毯对出苗的抑制作用更大；(2)覆盖两种植被毯均能够明显促进植物高度、地上生物量和阳坡植被盖度的增加，而若要增加阴坡的植被盖度，应当铺设秸秆椰丝混合植被毯；(3)使用熵权topsis法综合评价得出，阳坡适宜铺设规格为200 g·m^-2的秸秆植被毯，阴坡铺设规格为200 g·m^-2的秸秆椰丝混合植被毯更优。研究结果对正确选取植被毯措施进行边坡植被快速建成具有积极作用。

关键词: 植物生长状况, 裸露边坡, 植被毯, 恢复效果