It upset the ecological balance of the forest.这破坏了森林的生态平衡。Large dams have harmed Siberia's delicate ecological balance.大型水坝对西伯利亚脆弱的生态平衡造成了破坏。There are warnings that the building of the dam will upset the ecological balance of the river basin.有人警告说，修建这个水坝会破坏河流盆地的生态平衡。