第二次长出来的森林就是次生林。

The newly emerged forest is called secondary forest.

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次生林就是经过砍伐后又长起来的天然林。

A secondary forest is a natural forest formed after the original forest was felled.

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柞木：国家二级珍贵树种，是中国东北林区中主要的次生林树种。

Quecusmongolica:the second class nation protect plant. main species in Northeast china.

youdao

柞木：国家二级珍贵树种，是中国东北林区中主要的次生林树种。

Quecusmongolica:the second class nation protect plant. main species in Northeast china.

youdao