白垩纪作为距今最近的“温室地球”时期，对该时期的沙漠演化展开系统研究对认识现代沙漠形成演变具有重要意义。
Cretaceous is the latest typical greenhouse Earth state, thus the systematic research on the desert evolution in these period is of great significance to understand the modern desert.
沙漠形成演化是第四纪古气候、古环境研究的重要内容之一。
Evolution of desert is one of important aspect of Quaternary paleoclimate and paleoenvironment research.
结果陕北地区土地沙漠化及水土流失受全球气候变化、青藏高原抬升、西风环流变化、东亚季风演化的控制；
Results The land desertification in north of Shaanxi is controlled by the Tibet Plateau uplift, the changes of west wind circulation and east-Asian monsoon evolution.
目前，科学家们正就此展开讨论。但是，从演化历史来看，凭借这一能力在沙漠中找到一个较凉爽的地方确实是至关重要的。
Now researchers debate this, but it's possible that the ability to find a cool spot in a desert actually came first, in terms of evolutionary history.
目前，科学家们正就此展开讨论。但是，从演化历史来看，凭借这一能力在沙漠中找到一个较凉爽的地方确实是至关重要的。
Now researchers debate this, but it's possible that the ability to find a cool spot in a desert actually came first, in terms of evolutionary history.
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