Investigation of Climate impact on Afghan Pine (Pinus eldarica) Using Dendrochronological methods

Afghan pine one of the native tree species in Eldar region of Azerbaijan Republic. Fast growing, suited for dry climate condition, increasing wood in unit volume, reason of using Eldar pine in reforestation and plantations. At this case study of Absheron peninsular of Baku, Azerbaijan, were taken 14 trees samples of two sites. BBG, Baku Botanical Garden and BMD, Baku Merdakan Dendrary, are two case study sites in this research. The tree ring chronology of BBG and BMD, are 1961-2010 (49 years) and 1932-2010 (78 years) time span, respectively. The chronology statistic shows that there is similarity between two sites (GLK=65، T-value= 4، GSL= 95%). The result shows that there is positive correlation between monthly total precipitations of November before growing season with tree ring of Pinus eldarica at BMD site. Mean temperature of November has negative correlation with growth of Pine at BMD site. The monthly total precipitation of august has negative impact on growth of Eldar pine in BBG site. Decreasing temperature in November month is parallel to increasing of rain. That has the positive impact on tree ring growth next growing season. In summer, increasing of temperature case of decreasing rainfall and increasing water stress and so lead to narrow tree ring width. The results of this research can useful for choice of Afghan pine to various reforestation and plantations.