Response Of The Growth Of Larix Gmelinii To Climate Change In Daxing’ Anling Mountains

In this paper, we collected samples from Larix gmelinii forest(Bryacea-Larix gmelinii forest、Grass-Larix gmelinii forest Ledum palustre-Larix gmelinii forest, Streamside-Larix gmelinii forest, pinus pumila-Larix gmelinii forest) and constructed ring-width chronologies respectively. Cause of reveal response of Larix gmelinii radial growth to climate indexes, we have analyzed correlation within radial growth and climate factors by correlation analysis and response function analysis. Make use of dendrochronology theory, constructed height growth chronology and analyzed correlation of height growth and climate factors. The main study conclusions are as follows:(1) Five forest types of Larix gmelinii ring-width chronologies have higher mean sensitivity, express population ratio and signal to noise ratio, so these chronologies we have made have higher climate information, it is reliable to analyze the correlation of radial growth and climate factors. Although signal to noise ratio of larix gmelinii height growth chronology is lower, the sensitivity and standard division is higher.(2) Correlation analysis indicating that pinus pumila-Larix gmelinii radial growth is positively correlated with temperature; Response on Ledum palustre-Larix gmelinii to winter temperature is better; Grass-Larix gmelinii is significantly correlated with last year growing season, highly correlated with April and June temperature; Bryace-Larix gmelinii radial growth is significantly correlated with last summer climate; Streamside-Larix gmelinii radial growth positively correlated with February, June, July lowest temperature.(3) The height growth is negatively correlated with last year June and August precipitation significantly; Negatively correlated with Last year December mean temperature and lowest temperature; Positively correlated with January precipitation, June and July temperature.