1. Forests that have been contaminated by pollutants such as air pollution, water contamination, chemical waste, or other harmful substances affecting the ecosystem
The polluted forests near the industrial zone showed signs of ecological damage.
As florestas poluídas perto da zona industrial apresentavam sinais de dano ecológico.
2. Woodlands where environmental degradation has occurred due to human activities or industrial processes
Scientists are studying the effects of acid rain on polluted forests.
Cientistas estão estudando os efeitos da chuva ácida nas florestas poluídas.