那个偏僻山区，过去是刀耕火种。

In those remote mountains people used to farm by the slash and burn method.

刀耕火种的传统耕作方式已经使土壤枯竭了。

Traditional slash and burn farming methods have exhausted the soil.

他们渔猎和刀耕火种的习性通常会破坏他们的生存环境。

Their habits of hunting, fishing, and slash-and-burn cultivation often have been harmful to the habitat.

结果表明，萌生是刀耕火种后植被恢复的一种重要方式。

The result showed that sprouting is an important form for vegetation recovery.

从遗留的花粉和草木灰可看出距今2000年前生活在那里的玛雅人还在那里种植玉米，虽然种植方式还处在刀耕火种的原始方式，但那里毕竟还有土地。可是在随后的几百年里，这片土地已成了永久性的洪涝之地。

Pollen and ash remains show that 2000 years ago the Mayans were growing maize with slash-and-burn agriculture in some areas that over the course of later centuries became permanently flooded wetlands.