Abstract
Climatic factors play an essential role in the growth of tree ring width. In this study, we aimed to evaluate the correlation between climatic variables and tree-ring growth characteristics of Pinus sibirica in Altai mountains, northwestern China. This study being is first of its kind on climate growth analysis of Pinus sibirica in northwestern China. The study showed great potential to understand the species growing under the specific climatic conditions. Total of 70 tree cores collected from three sites in the sampling area, out of which 63 tree cores considered for this study. The effect of climatic variables which was studied include precipitation, temperature and PDSI. Our results showed that Tree Ring Width chronology has a significantly positive correlation with the late winter (March) temperature and significant negative correlation with the July temperatures. A significant correlation was observed with the late summer precipitation whereas no significant relation found with the Palmer Drought Severity Index. These significant correlations with temperature and precipitation suggested that this tree species had the potential for the reconstruction of the past climate in the area.
Highlights
Climatic variables including temperature and precipitation, etc. play an impactful role in the overall growth of forest trees (Fritts, 1974)
The temperature and precipitation patterns are correlated with each other as the temperature increases in March the precipitation tends to increase and in July the temperature and precipitation reached to the maximum
Our results showed that the assessment of standard chronology has the potential to find out the relationship between climate and growth of Pinus sibirica in the study area
Summary
Climatic variables including temperature and precipitation, etc. play an impactful role in the overall growth of forest trees (Fritts, 1974). Soil type, vegetation surface, water holding capacity and rainfall interception are different factors that could affect the water availability for tree growth A differing temperature of day and night, variation in moisture content between summer and winter and mountain relief promote a complex system of biomes steppe, forest, tundra, and high mountain meadows This complex system is dependent on slope, altitude and moisture availability (Blyakharchuk et al, 2007). Several century long reconstructions developed over the recent years grown from the historical, living and subfossil ring series in past years (Büntgen et al, 2009; Cooper et al, 2013; Levanič et al, 2013; Santos et al, 2015; Seftigen et al, 2015; Wilson et al, 2013; Wilson et al, 2005; Young et al, 2015)
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