摘要
通过对大同盆地东水头剖面孢粉植物群分析研究,揭示了全新世气候环境的演变特征。结果表明:全新世以来草本植物始终占据优势地位,落叶阔叶植物和针叶植物虽然有时在木本植物中出现高峰,但仍然未形成稳定的森林景观。该区植被类型是以疏林草原和草原植被为主,气候温暖偏干。全新世大暖期在8.5～4kaB.P.间,气候不稳定,气候波动明显,与黄土高原地区具有良好的可比性。
Based on a study of the spore-pollen flora from the Dongshuitou section of Datong basin, the authors revealed evolutionary characteristics of the climatic environment in Holocene. The results indicate that the herb has been dominant all the time since Holocene. Although the deciduous and broad-leaf plants and the coniferous plants sometimes possessed important positions in the woody plants, they have not yet formed the stable forest landscape. The vegetation types in the study area are dominated by veld and grassland plants, suggesting a warm and dry climate. The megathermal period of the Holocene lasted from 8.5 kaB. P. to 4 kaB. P. when the climate was unstable, which has good comparability with that of the Loess Plateau.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2007年第6期535-540,共6页
Acta Geoscientica Sinica
基金
国家自然科学基金项目"黄土高原东北部中更新世以来气候变化与全球变化对比"(编号:49171064)资助
关键词
大同盆地
全新世
孢粉
植物群
Datong basin, Holocene, spore and pollen, plant community
