There might be a cold event in the period of the Middle Holocene.
本区可能也存在着中全新世的降温事件。
The vegetation of the middle Holocene was forest grassland and aciculignosa and aeslilignosa grassland, and the climate was warm and wet.
晚全新世植被为森林草原或疏林草原，气候干旱偏暖—温凉干旱。
In late Holocene, climate is dryer and cooler than that in middle Holocene, the precipitation of drainage area decreases. So runoff deceases, the width of riverbed becomes narrow.
进入全新世晚期，由于气候相对于全新世中期变得较为干燥，也较为温凉，流域来水减少，故流量减小，河床宽度变小。
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。
In late Holocene, relatively high crude particle content of the middle region section instructs the intensity of sandstorm of this place to be greater than the middle region.
西部地区地层中的粗颗粒含量相对较高，指示该地沙尘暴强度较大，这在全新世晚期表现尤为明显。
Sandy materials were deposited continually during the middle and late Holocene.
全新世中、晚期该区继续接受砂质沉积。
The results show that the core sediments studied were formed in the late stage of Middle Holocene for the lower part and in Late Holocene for the upper part.
研究结果表明，所研究的柱样沉积物下部形成于中全新世晚期，上部属于晚全新世。
The bog in upper stream formed early, and had begun in early 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;
上游形成时间较早，始于中全新世前期；
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