老齢林(ろうれいりん)

ろうれいりん
noun
old-growth forest; mature forest
academicnature
1. old-growth forest; mature forest; overmature stand
A forest that has reached an advanced stage of growth, typically consisting of large, old trees that have not been recently logged or significantly disturbed. Used in forestry as a technical classification of forest age.
この山(やま)には老齢林(ろうれいりん)が残(のこ)っている。
Old-growth forest remains on this mountain.
老齢林(ろうれいりん)は生物(せいぶつ)多様性(たようせい)の宝庫(ほうこ)だ。
Old-growth forests are treasure troves of biodiversity.
伐採(ばっさい)が進(すす)み、老齢林(ろうれいりん)の面積(めんせき)は年々(ねんねん)減少(げんしょう)している。
With continued logging, the area of old-growth forest is decreasing year by year.

A forestry term composed of 老齢(ろうれい) (old age, advanced age) and 林(りん) (forest, grove). In Japanese forestry, forests are classified by age: 幼齢林(ようれいりん) (young forest), 壮齢林(そうれいりん) (mature forest), and 老齢林(ろうれいりん) (old-growth forest).

Common collocations

Forest age classification

  • 幼齢林(ようれいりん): young forest (roughly 1-20 years)
  • 壮齢林(そうれいりん): middle-aged forest
  • 老齢林(ろうれいりん): old-growth forest (species-dependent, typically 80+ years)
general
Added 2026.5.5 0:32 · Revised 2026.9.2 13:02
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