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云南松(Pinus yunnanensisFranchet)的生长发育不仅限于幼龄林或中龄林等几个时期的转向,而在幼龄期二十年内由于林木的不断生长,森林生态发生相应变化,幼林阶段也就出现了三个不同时期。
The growth and development of Pinus yunnanensis Franchet is not limited to the transition from young to middle-aged forests. In the early 20 years of the young, Pinus yunnanensisFranchet changes its forest ecology due to the continuous growth of trees, Three different periods.