生态

organisms' habits, modes of life and relation to their environment; ecology

~爆炸 ecological explosion~变异 ecocline~工程 eco-engineering~经济学 eco-economics~旅游 ecotourism~灭绝 ecocide~农业 eco-agriculture~平衡 ecological balance; eco-equilibrium~屏障 ecological protective screen~破坏 ecocide~圈 ecosphere~退化 ecological degradation~危机 ecological crisis; ecocrisis~系统 ecosystem~效益 ecological benefits~型 ecotype~学 ecology