deforestation
noun [ U ] uk/diːˌfɒr.ɪˈsteɪ.ʃən/ us/diːˌfɔːr.əˈsteɪ.ʃən/
大面积砍伐森林;人为毁林
the cutting down of trees in a large area, or the destruction of forests by people
Deforestation is destroying large areas of tropical rain forest. 滥伐森林毁掉了大面积的热带雨林。