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对富春江两岸滩地的主要造林树种进行根系调查和土壤抗蚀性、有机质含量的测定分析，结果表明：同一地段土壤的抗蚀指数表土层大于底土层；抗蚀指数与根长、根量存在明显的正相关关系，但较之与有机质含量之间的关系而言相对较低，有机质含量高的土壤抗蚀指数大、抗蚀能力强；在现有的造林树种中，桤木、枫杨、杨树和竹林地土壤的抗蚀能力最大；水杉、苏柳林地次之。造林密度也有较大的影响，以杨树的4种密度为例，土壤抗蚀力以3m×4m最强，3m×3m和2m×3m次之，2m×2m较弱。
The results showed that the soil resistance index of topsoil in the same area was larger than that of the bottom soil layer; the corrosion resistance index, the root length and the root amount existed Obvious positive correlation, but relatively lower than the relationship with the organic matter content, high soil organic matter content of the soil resistance index, corrosion resistance; in the existing afforestation species, alder, Maple , Poplar and bamboo soil soil corrosion resistance is the largest; Metasequoia, Su Liulin followed. For instance, the four kinds of density of poplar, the soil erosion resistance is strongest with 3m × 4m, followed by 3m × 3m and 2m × 3m, and weak with 2m × 2m.