... becoming increasingly important [8,9,31,55,65]. In China,tree ring chronologies studies started in the 1930s [34, 64].Since then, research using tree rings has been conducted to understand the ... response to solar activity in the periodic bands of 5–8, 10–12 and 20–30 years. The wave signal of tree growth was also affected and amplified by the combined effect of the PDO from 1900 to 2004 and ... response to PDO in the growing season (May–October) (Tab. IV). Treering width in Chinese pine shows more significant response to the PDO in warm periods than to the cold periods (Fig. 7B);suggesting...