Responses of tree-ring width of Cinnamomum camphora to climate change in Dagangshan forest area of Jiangxi Province

By using ARSTAN software to wipe off the growth trend of tree-ring width and transform the series into index form, the tree chronology of Cinnamomum camphora in Dagangshan forest area of Jiangxi Province was built, and the responses of the tree-ring width of C. camphora to climate change in study area were studied. The results showed that the built tree chronology included abundant environmental climatic information, which could be used in dendrochronological research. In study area, the tree-ring width of C. camphora was positively correlated to the mean monthly temperature in growth season, especially to that of April and May (P < 0.05). The correlation of the tree-ring width with monthly precipitation was more complicated, being significant negative with the precipitation in current May (P < 0.01) and last December (P < 0.05), while significant positive with that in current June and August (P < 0.05). The tree-ring width had a good correlation with the humidity index of current May, June, August, and September. Temperature and precipitation had obvious integrative effects on the tree-ring width of C. camphora in Dagangshan forest area of Jiangxi Province.