摘要
本文提供了福建宁德市霞浦县沿海平原XPZK3钻孔的年代和孢粉记录用于研究中全新世以来福建东北地区的植被与环境变化。中全新世以来,研究区植被中亚热带木本成分逐步降低而落叶阔叶成分逐渐增多,反映气温逐步降低,与东亚季风和北半球温度变化的趋势相同,反映在轨道尺度上北半球夏季太阳辐射对东亚季风的影响。DCA分析显示,中全新世以来,人类活动是影响研究区植被变化的最主要因素,5000cal. yr BP以来,松属、草本植物花粉和蕨类孢子的逐步增加反映人类活动对植被的干扰逐步加重,尤其是1370cal. yr BP(南北朝)以来,反映人类活动的孢粉占主要地位,人类活动对植被产生了重要影响。
A 13.76-m long sediment core(XPZK3) retrieved from Xiapu County, Ningde City, Fujian Province shows evident environmental change since the middle Holocene based on pollen and spore analysis. The value of subtropical broadleaf tree has been decreasing gradually since the middle Holocene, which is consistent with other climatic proxies from south China. This suggests that the East Asian Summer Monsoon(EASM) is mainly controlled by the summer insolation to the North Hemisphere on orbital-scale during the mid-late Holocene. Detrended correspondence analysis(DCA) based on pollen data(increasing the Pinus, upland herbs and ferns percentages) indicates that the human activity is an important factor that has influenced the vegetation in the study area since 5 000 cal. yr BP. After 1 370 cal. yr BP, the human activity has greatly changed the regional vegetation.
作者
吴少元
WU Shaoyuan(Xiamen Institute of Geological Engineering,Xiamen 361008)
出处
《微体古生物学报》
CSCD
北大核心
2019年第2期181-189,共9页
Acta Micropalaeontologica Sinica
基金
自然资源部中国地质调查局调查项目(121201140030)~~
关键词
孢粉
植被变化
人类活动
全新世
福建
sporo-pollen
vegetation changes
human activity
the Holocene
Fujian Province
