ecosphere
/ˈiːkəʊsfɪə(r)/noun
1- the biosphere of the earth or other planet, especially when the interaction between the living and non-living components is emphasized（地球或其他行星上的）生物圈。
1.1
- Astronomy the region of space around a sun or star where conditions are such that planets are theoretically capable of sustaining life【天文】生态圈, 生态层（指理论上可供生物生存的宇宙空间）。