Land degradation during the Bronze Age in Hexi Corridor (Gansu, China)

Land degradation during the Bronze Age in Hexi Corridor (Gansu, China)
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河西走廊青铜时代的土地退化(中国甘肃)

DOI:
10.1016/j.quaint.2011.06.046
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发表时间:
2012-03
影响因子:
2.2
通讯作者:
Qing Y
Qing Y
中科院分区:
地球科学3区
文献类型:
--
作者:
Zhou X;Li X;Dodson J;Zhao K;Atahan P;Nan S;Qing Y

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通过对河西走廊两个沉积物剖面的高分辨率AMS 14 C测年和孢粉分析,追踪了青铜时代聚落的发展和废弃过程。证据表明,青铜时代的农业活动导致了河西走廊农田的增加和蒿属草地丰富度的减少。土地退化可能是农业活动减少和定居点废弃的主要原因。农业引起的土壤肥力丧失和土地盐碱化是土地退化的原因之一.然而,4000-3500卡BP左右气候干旱度的增加可能是河西走廊耕地萎缩和植被退化的主要诱因。
Pollen and charcoal analysis, with high resolution AMS14C dating, on two sediment sections in the Hexi Corridor track the process of settlement development and abandonment during the Bronze Age. The evidence shows that agricultural activity during the Bronze Age caused an increase in farmland and a decrease in the abundance of Artemisia grassland in the Hexi Corridor. Land degradation is probably the main cause for decreased agricultural activity and settlement abandonment. Agriculture- induced soil fertility loss and land salinization contributed to the process of land degradation. However, increasing climate aridity around 4000–3500 cal BP is probably the main initiating cause for the contraction of arable land and vegetation degradation in the Hexi Corridor.
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