It is first met on the upper margin of the silver fir zone, singly, in what appears as chance situations without making much impression on the general forest.

它第一次单独出现在银杉地带的上缘，似乎是偶然的情况，没有给一般森林留下太多印象。

The Mountain Pine is first met on the upper margin of the fir zone, growing singly in a subdued, inconspicuous form, in what appear as chance situations, without making much impression on the general forest.

山松首先出现在冷杉带的上缘，以一种低调的、不显眼的形式单独生长，看起来像是偶然的情况，对一般的森林没有太大的影响。