decimation

/ˈdɛsəˌmeɪʃən/

destroying or killing a large part of the population (literally every tenth person as chosen by lot)

中文释义：大量毁灭；大批杀死

The war caused the decimation of the local population.

战争导致当地人口大量死亡。

Deforestation led to the decimation of many animal species.

森林砍伐导致许多动物物种大量灭绝。