黄土是在相对冷干气候条件下发育的成熟的灰黄色古土壤，不同地区黄土所属土壤类型主要为灰钙土、栗钙土、棕钙土、棕漠土和黑垆土。

But compared with reddish paleosols, it was formed in dry and cold conditions, so, loess even could serve as an indicator of dry and cold climate.

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天更冷了，地上一点绿色都没有了，只剩下大片大片的黄土地。

Colder days, and on the ground that are not green, and left large tracts of Yellow Earth.

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适宜黄土高原冷凉区水地种植。

The normal region is cold irrigated areas of Loess Plateau.

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