Climatic response of the stem radial growth of Pinus taiwanensis in the Luoxiao Mountains
The Pinus taiwanensis is one of the native tree species in high-altitude subtropical regions in China.For the purpose of assessing the growth dynamics of the P.taiwanensis,it is crucial to examine the radial growth features and how it responds to climatic change.This work established three tree-ring width chronologies in the north,centre,and south of Luoxiao Mountains for P.taiwanensis,and the response relationship between the radial growth of P.taiwanensis and climate factors was analyzed by correlation analysis.The findings indicated that the population in central part was more susceptible to environmental stress since its growth commonality was higher there than it was in northern and southern parts.The autocorrelation of tree-ring width reduced from north to south as the connection with climate gradually rose.The findings demonstrated that while the climate's limiting effect was reinforced,the sustainability of early growth's contribution to present growth was diminished.There was a clear geographical variation in the climatic response of tree-ring width.The previous year's heat and light influenced the northern tree growth,while the middle region was hampered by precipitation and relative humidity,and the southern region was favored by heat.
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