摘要
通过对北京地区房山东甘池剖面所取的１９７个样品的烧失量测定，结合１４Ｃ测年、剖面岩性特征及孢粉序列分析，初步回答了烧失量作为沉积物有机质含量的代用指标，其数值波动对北京地区１５０００ａ以来环境变迁和气候变化的特征响应，同时针对房山东甘池剖面的６个带的烧失量变化特征，提出其在反映气候异常、沉积物地貌单元等的意义，从而为更好地重建过去气候和环境提供依据。
The lossonignition(LOI)at 600℃ of 197 samples obtained from a 820 cm profile at Dongganchi of Fangshan in Beijing.Accorrding to the continuos records of LOI,with the pollen analysis,the profile lithology,and 14C radiocarbon dating,the respondence of LOI range to past climate and environment since 15000 aB.P in Beijing was discussed.In the meantime,to understand the characteristics of LOI range of six zones in Dongganchi profile,the indications of LOI range to abrupt climate event and sediment landform unit were considered.This gives a basis to reconstruct past climate and past environment.
出处
《生态学报》
CAS
CSCD
北大核心
1998年第4期343-347,共5页
Acta Ecologica Sinica
基金
国家自然科学基金
中国科学院古生物与古人类学科基础研究特别支持项目
关键词
烧失量
东甘池剖面
古环境
古气候
特征
lossonignition,Dongganchi profile,Paleoclimate and Paleoenvironmet.
