Holocene environmental change at Lake Shudu, Yunnan Province, southwestern China
Holocene environmental change at Lake Shudu, Yunnan Province, southwestern China
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DOI：
10.1007/s10750-012-1124-y
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发表时间：
2012-05
期刊：
影响因子：
2.6
通讯作者：
Richard T. Jones;C. Cook;E. Zhang;P. Langdon;J. Jordan;C. Turney
中科院分区：
文献类型：
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作者：
Richard T. Jones;C. Cook;E. Zhang;P. Langdon;J. Jordan;C. Turney
云南蜀都湖全新世古记录的主要特征是：（1）约1000万年后，盆地内出现明显的沉积间断; 7.2kcaláyráBP，跨越约4，000年和（2）沉积物来源/供应的显着变化和重金属流入量的增加，加上从约7.2kcaláyráBP转向更富营养化的湖泊条件。距今0.9kcaláyráBP，持续约300 áyears。这种间断很可能是由于沉积速率的显著和突然减少，其驱动因素尚不清楚;尽管它似乎可能是气候驱动的。在蜀都湖古记录捕获的环境变化提供了明确的证据晚全新世人类活动，最有可能与采矿活动。
A Holocene palaeorecord from Lake Shudu, Yunnan Province, southwestern China is dominated by (1) a pronounced basin-wide sedimentary hiatus after ca. 7.2ákcaláyráBP, spanning some 4,000áyears and (2) significant changes in sediment source/supply and an increase in heavy metal influx coupled with a shift to more eutrophic lake conditions from ca. 0.9ákcaláyráBP, lasting ~300áyears. The hiatus is most likely a due to a significant and abrupt reduction in sedimentation rates, the driver of which is unclear; although it appears likely to have been climatically driven. The environmental changes captured in the Lake Shudu palaeorecord provide unambiguous evidence of late Holocene anthropogenic activity, most likely linked to mining activity.