福建北部天湖山全新世泥炭古气候记录的初步研究  

Paleo-climate Significance for Nearly 10 ka BP Revealed by Tianhushan Peat Record in the Northern Fujian

作　　者：张辉[1,2,3] 李志忠[1,2,3] 姜修洋[1,2,3] 靳建辉[1,2,3] 胡凡根[1,2,3] 赵倩[1,2,3] 马鹏[1,2,3,4] 

机构地区：[1]福建师范大学地理研究所,福建福州350007 [2]福建师范大学地理科学学院,福建福州350007 [3]福建亚热带资源与环境重点实验室,福建福州350007 [4]山西运城师范学院,山西运城044000

出　　处：《宁夏大学学报（自然科学版）》2012年第1期120-124,共5页Journal of Ningxia University(Natural Science Edition)

基　　金：福建省公益类科研院所专项基金资助项目(2010R1037-3)

摘　　要：通过对福建北部天湖山泥炭沉积记录的有机质含量和腐殖化度等多种环境代用指标的综合分析,在可靠14C测年技术的支持下,恢复了福建北部天湖山近10cal kyr BP以来的气候与环境演变过程.结果发现,泥炭有机含量和腐殖化度敏感地记录了研究区古气候变化信息,其低值指示气候相对暖湿,高值指示气候相对冷干.约10～4cal kyr BP泥炭有机质含量和腐殖化度较高,指示气候暖湿,是该区域水热组合状况最好;4cal kyr BP以来泥炭有机质含量和腐殖化度较低,指示气候相对干冷.细分千年尺度的气候变化阶段有待于测年精度的进一步提高.Organic content and humification as two climatic proxies were used for the first time to study Tianhu Mountain peat.They have better recorded the climate change in the northern Fujian.Based on the synthesis of the multiply indexes from the Tianhu Mountain peat sequence which obtained from the northern Fujian and the reliable testing of the radiocarbon ages,the variations of the paleo-climate in the northern Fujian during the past 10 cal kry BP were reconstructed.The study shows that the humification is an ideal proxy for pale climatic changes,the low value of organic content and humificaion indicates humid-warm climate,and low value implies dry-cold climate.The phase about 10 to 4 cal kyr BP of low organic content and humification,indicating warm and moist climate,the phase about 4 to 0 cal kry BP of high organic content and humification,suggesting a cool and moist climate.

关 键 词：泥炭 有机质 腐殖化度 古气候 福建北部 

分 类 号：TU43[建筑科学—岩土工程] O344[建筑科学—土工工程]