極きょく相そう林りん

きょ

く

そ

う

り

ん

Meanings

1

noun

climax forest

biology

Technical term in ecology for the final, stable forest community that develops in a given climate and soil after succession.

extreme, pole, extremely

相inter-, mutual, together

林grove, forest

遷せん移い
遷移 refers to ecological succession, the process leading to a climax community; 極相林 is the resulting forest.
極きょく相そう
極相 is the climax community in general; 極相林 specifically refers to the forest type.

Compound of 極相 (climax, from 極 'ultimate' + 相 'phase/aspect') and 林 (forest).