落叶松人工林是我国北方林区主要用材林之一，对我国的国民经济建设起到重要作用。

Larch plantation is one of the main commercial forests in north China and has an important contribution to the national economy.

youdao

落叶松人工林是我国北方林区主要用材林之一，对我国的国民经济建设起到重要作用。

Larch plantation is one of the main commercial forests in north China and has an important contribution to the national economy.

youdao