Located in the Xiqiaoshan of Guangdong Province in China,the Xiqiao section(22°56'15"N,112°57'16"E) consists of fluvial-lacustrine facies and red soil with thickness of 153 cm.Based on AMS-14C age determination of 11 samples and elemental analyses for the section,through the analyses of Al_2O_3/SiO_2 and (Al_2O_3+TFeO)/SiO_2 values which indicate desiliconization and aluminization of chemical weathering strength,in combination with paleoecology indicated by sporopollen,the relationship between climate cycles and chemical weathering cycles is confirmed,which provides geochemical evidence for Holocene environment evolution in the south subtropical areas.The results show that the specific age of the Xiqiao section is from 620 cal.a B.P.to 11000 cal.a B.P.(see Table 2),and there are 13 winter monsoonal events characterized by weak weathering in the Xiqiao section during the Holocene,of which cold events occurring in 2000a B.P.(xcl),2900a B.P.(xc3),4100a B.P.(xc4),5300a B.P.(xc5),7800a B.P.(xc10),9300a B.P.(xcll),9500a B.P.(xc12)and 9700a B.P.(xc13)correspond to the Bond Event 1 ~8 from Marine sediments in the North Atlantic,especially,the former six events are consistent with six weak monsoonal events in Hole 17940 from the north of continental slope in South China Sea since 10 ka B.P.,and 13 cold events almost correspond to the minimum radiation of sunspot activity.It is suggested that the abrupt climate variability in Xiqiaoshan during the Holocene is not only affected by the increase in ice volume at high latitudes in the Northern Hemisphere,but also by solar activity to a considerable extent.