该文在前人研究的基础上 ,针对防护成熟概念中所存在的不足 ,提出从防护林经理原则和防护效益变化过程两方面来进行研究 ,认为防护林经理应遵循可持续、经济和防护功能为主导的原则 ,由防护林防护作用发挥过程得到防护林生长过程的 4个阶段 ,建立了防护林防护成熟和防护成熟龄概念 On the basis of the previous studies, this paper puts forward that the protection forest management should be guided by the principle of sustainable development, economy and protection from two aspects: the principle of the forest manager and the process of the change of the protection benefit. The principle of protection forest protection process to get the process of growth of shelter forest in four stages, the establishment of a protective forest protection mature and protective maturity concept