适用于岩质边坡植被恢复的植生基材比选研究  

Comparison and Selection of Plant Substrates Suitable for Vegetation Restoration of Rocky Slope

作　　者：阳珍 袁飞云 严贤春[1] 刘华峰 陈亚梅 胥晓[1] YANG Zhen;YUAN Fei-yun;YAN Xian-chun;LIU Hua-feng;CHEN Ya-mei;XU Xiao(College of Life Science,China West Normal University,Nanchong 637009,China;Sichuan Tibetan Areas Expressway Co.Ltd.,Chengdu 61004l,China)

机构地区：[1]西华师范大学生命科学学院,南充市637009 [2]四川藏区高速公路有限责任公司,成都市610041

出　　处：《公路》2024年第1期351-357,共7页Highway

基　　金：泸石高速公路植被保护与恢复技术研究项目,项目编号LSXJ2021-009。

摘　　要：植生基材是边坡生态恢复工程中植物生长的基础,为筛选出适宜于川西高海拔地区岩质边坡植被恢复的植生基材,选取我国4种常用植被恢复技术的代表性配比,测定其理化性质,采用单因素方差分析比较各基材理化性质间的差异性,用主成分分析法进行综合评价。结果表明:厚层基材的最大持水量和总孔隙度最高,分别达到2 169.71 g/kg和80.70%,喷混植生基材最低,分别为265.13 g/kg、35.64%;4种基材pH值在7.31~9.73之间,厚层基材的养分含量均显著高于其余3种,喷混植生基材养分含量最低;客土喷播基材和植被混凝土基材的各性质相近且介于前两者之间;主成分分析结果表明持水量、孔隙度和氮素养分是基材理化性质的主要影响因素,4种基材综合得分从高到低顺序依次为:厚层基材>客土喷播基材>植被混凝土基材>喷混植生基材。因此,厚层基材在各方面等均处于较好水平,适合于气候环境恶劣下的岩质边坡植被修复。Vegetation substrate is the basis of plant growth in slope ecological restoration project.In order to select the vegetation substrate suitable for the vegetation restoration of rock slope in the high altitude area of western Sichuan,in this study,the representative proportions of four commonly used vegetation restoration techniques in China are selected to determine their physical and chemical properties,and the difference between physical and chemical properties of each substrate was compared by one-way ANOVA,and the comprehensive evaluation is carried out by principal component analysis.The results show that the maximum water holding capacity and total porosity of thick-layer based material spraying are the highest,reaching 2169.71 g/kg and 80.70%,respectively,while those of spray sowing are the lowest,265.13 g/kg and 35.64%,respectively.The pH of four substrates ranged from 7.31 to 9.73,and the nutrient content of thick-layer based material spraying are significantly higher than those of the other three substrates,and the nutrient content of the spray sowing is the lowest.The properties of outside soil spray seeding and vegetation concrete are similar and between the first two.The results of principal component analysis show that water holding capacity,porosity and nitrogen content are the main factors affecting the physical and chemical properties of the substrates,and the comprehensive scores of the four substrates from high to low are in the order of thick-layer based material spraying>outside soil spray seeding>vegetation concrete>spray sowing.Therefore,the thick-layer based material spraying is at a good level in all aspects,and is suitable for vegetation restoration of rock slope under harsh climatic environment.

关 键 词：岩质边坡 边坡防护 植生基材 理化性质 主成分分析 

分 类 号：U417.12[交通运输工程—道路与铁道工程] S158[农业科学—土壤学]