A transfer-function model developed from an extensive surface-pollen data set in northern China and its potential for palaeoclimate reconstructions

摘要: A total of 237 surface soil pollen samples were collected from less disturbed zonal communities, and a new data set has been established in northern China. Pollen—climate parameter transfer functions using weighted-averaging regression calibration partial least squares (WA-PLS) model as tool to reconstruct past climate changes data, tested with this set. The results cross-validation showed that the method worked very well precipitation (R = 0.94, R2jack 0.89, RMSEPjack 69 mm, safe dynamic range reconstruction was 40 mm~800 mm) temperature (Tann: R 0.84, 2jack 0.71, 2.0°C, −4°C~13°C; MTwa: 0.79, 0.63, 2.5°C, 8°C~26°C), indicating WA-PLS technique paper have strong potential for palaeoclimatic reconstr...