柳杉根系加固边坡土壤的试验研究

树木根系加固边坡作为固土和美化环境的一种新型技术，其合理的种植需要进一步优化。利用3个试验地的不同年龄生的柳杉根系，采集并制备土壤样本和根系样本，通过植株根系量测量、根系抗拉强度测试和土壤抗剪强度测试，探讨不同年龄生和不同土壤深度下，植株根系量、根系抗拉强度和根系额外黏聚力对土壤的加固影响。结果表明:种植9年生的柳杉有最大的根系密度和较低的根系抗拉强度，而30年生的柳杉与之相反；9年生植株在年龄、根系量和额外黏聚力上有较大优势，是最优的植株年龄。

Experimental Study on the Soil of Reinforced Slope of Cryptomeria Fortunei Root System

As a new technology for soil fixation and environment landscaping, the reasonable planting for the reinforced slope of tree root system needs to be further optimized. The influence of the plant root system amount, tensile strength and additional cohesion to the reinforcement of soil under different ages and different soil depths is discussed using the cryptomeria fortunei root system with different ages in 3 test fields, collecting and preparing soil and root system samples through the measurement of plant root system amount, test of tensile strength of root system and shear strength of soil. The results show that the 9-year-old cryptomeria fortunei has the largest root system density and low tensile strength and the 30-year-old cryptomeria fortune is on the contrary. The 9-year-old plants have greater advantages in age, root system amount and additional cohesion, with optimum plant age.