幼龄树
Young tree
由于其根系分布范围小，起苗时容易多带须根，对根系损伤率较低，地上枝条恢复能力强，同时可塑性强，对新环境的适应能力强，所以栽植成活率较高。但是在城市中栽植过小的苗木，一方面影响绿化效果的实现速度，另一方面容易受人为活动的影响。
Because of its small root distribution, easy to take fibrous roots when seedling, low damage rate to root system, strong recovery ability of shoots above ground, strong plasticity and adaptability to new environment, the survival rate of planting is higher. But planting too small seedlings in the city, on the one hand, affects the speed of greening effect, on the other hand, it is easy to be affected by human activities