Response of <i>Pinus sylvestris</i> var. <i>mongolica</i> to water change and the reconstruction of drought history for the past 260 years in northeast China

Abstract

Abstract. We present a 260-year annual PDSI reconstruction based on a regional tree-ring width chronology of Scots 6 pine (Pinus sylvestris var. mongolica) from four sample sites in the Daxing'an Mountains, northeast China. The model 7 explained 38.2 % of the variance of annual PDSI during the calibration period from 1911 to 2010. Compared with local 8 historical documents, nearby forest fire history data and hydroclimate reconstructions, our reconstruction is accurate 9 and representative, and recorded the same dry years/periods. The drought of 1920s-1930s was more severe in the 10