Pollen-climate response surfaces of selected taxa from Northern China  

作　　者：孙湘君 王琫瑜 宋长青 

机构地区：[1]Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

出　　处：《Science China Earth Sciences》1996年第5期486-493,共8页中国科学（地球科学英文版）

基　　金：Project supported by the National Natural Science Foundation of China.

摘　　要：Pollen-climate response surfaces of major taxa from surface pollen data of Northern China is studied. Response surfaces are nonlinear functions that describe the way in which each taxon’s expected abundance (the response variables) depends on the combined effects of several environmental variables(prediction variables). Response surfaces for 8 major taxa--Pinus, Picea, Betuta, Artemisia, Ephedra,Chenopodiaceae, Asteraceae and Poaceae--from 215 surface pollen samples and related climatic data(mean July temperature and annual precipitation) have been generated by analysis of second- or third-degree polynomial regression. Surface samples were collected from surface soil under natural vegetation of Northern China. The results can be used to re-evaluate the ecological significance of abundances of some taxa by quantifying the paleoclimatic variables from fossil pollen abundances.Pollen-climate response surfaces of major taxa from surface pollen data of Northern China is studied. Response surfaces are nonlinear functions that describe the way in which each taxon's expected abundance (the response variables) depends on the combined effects of several environmental variables(prediction variables). Response surfaces for 8 major taxa--Pinus, Picea, Betuta, Artemisia, Ephedra,Chenopodiaceae, Asteraceae and Poaceae--from 215 surface pollen samples and related climatic data(mean July temperature and annual precipitation) have been generated by analysis of second- or third-degree polynomial regression. Surface samples were collected from surface soil under natural vegetation of Northern China. The results can be used to re-evaluate the ecological significance of abundances of some taxa by quantifying the paleoclimatic variables from fossil pollen abundances.

关 键 词：NORTHERN China POLLEN climate response surface. 

分 类 号：P532[天文地球—古生物学与地层学]