This is the 2703rd most frequent Japanese word.
生態
"生態" (せいたい) means "ecology" or "organism's natural state."
In this sentence, '生態' is part of the compound word '生態系', meaning 'ecosystem', referring to the biological community within the forest.
森林の生態系は多様な動植物から成り立っています。
The ecosystem of the forest consists of a diverse range of flora and fauna.
Here, '生態' refers to '生態' as 'ecology', focusing on how living organisms interact within a specified region.
彼は地域生態を調査しており、その変化を分析しています。
He is investigating the regional ecology and analyzing its changes.
In this usage, '生態' contributes to the term '生態環境', which denotes 'ecological environment', emphasizing the importance of ecological balance in cities.