Holocene vegetation-hydrology-climate interactions of wetlands on the Heixiazi Island, China

The Science of the Total Environment
Zhenqing ZhangMing Jiang

Abstract

An integrated view of wetland's evolution is currently poorly understood due to a lack of knowledge on long-term interactions of multiple ecological factors. Here, we present a cored palynological record covering the Holocene Epoch from a depressional wetland on Heixiazi Island (China). With the aid of principal component analysis and cluster analysis of the palynological data, the historical vegetation regime has been well reconstructed for wetlands on the island. With further assistance from the published data on local hydrology and regional East Asian summer monsoon (EASM) variations, the interactions of vegetation, hydrology, and climate in the island's wetlands have been thoroughly analyzed with correlation analysis of the three factors. The results indicate that a strong EASM generally led to a high water level in the wetlands from increased monsoonal precipitation, causing an increase in arboreal vegetation and a decrease in herbs. Alternatively, a weak EASM generally led to low water levels due to decreased monsoonal precipitation, causing a decrease in arboreal vegetation and an increase in herbs. The local vegetation regime during the early Holocene was marked by an increase in tree/herb ratio due to rising water leve...Continue Reading

References

Sep 22, 2000·Trends in Ecology & Evolution·J B Zedler
Oct 9, 2004·Science·Edward R CookDavid W Stahle
Jun 19, 2015·Scientific Reports·Fahu ChenZhiguo Rao
Aug 12, 2017·The Science of the Total Environment·Xiancang WuWei Xie

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