aridity

"Increased aridity is making the drylands the most conflict prone region of the world, " he said.

“干旱的增加正使旱地成为世界上最容易发生冲突的地区，”他说。

The perception of raw aridity is belied by a surprising amount of life: insects and lizards, the colorful opportunists.

原始干旱的观念被数量惊人的生物证明是错误的：昆虫和蜥蜴，还有五颜六色的机会主义者。

He also cited nothern Nigeria, where increased aridity means lack of fodder is driving herders south into the areas farmed for corn.

他还指出，在干旱增加意味着饲料缺乏的尼日利亚北部，干旱正驱使牧民南移到种植玉米的地区。