本区可能也存在着中全新世的降温事件。
There might be a cold event in the period of the Middle Holocene.
上游形成时间较早，始于中全新世前期；
The bog in upper stream formed early, and had begun in early Middle Holocene;
最暖期不是在中全新世，而是在晚全新世。
The warmest stage was not in Middle Holocene but in Late Holocene.
最暖期不是在中全新世，而是在晚全新世。
The warmest stage was not in Middle Holocene but in Late Holocene.
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