Take one square meter of soil and make it bare like this is down here, and I promise you, you will find it much colder at dawn and much hotter at midday than that same piece of ground if it's just covered with litter, plant litter.
像这样一平方米的土壤表面 像下面这样程度的裸露着， 我敢说，它会比被植被覆盖的地方， 同样的大的地方， 黎明的时候会冷得多， 中午时会热得多。