Growth Characteristics and Tree-Ring Width Response of Quercus acutissima to Climate Factors in the Rocky Mountain Area of Northern China
Yu Liu1, Peng Gao1, Jian Ni Sun1, Xiang Niu2, Rong Jia Wang1
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1Shandong Agricultural University/Mountain Tai Forest Ecosystem Research Station of State Forestry
Administration/Shandong Provincial Key Laboratory of Soil Erosion and Ecological Restoration,
Tai’an, Shandong, 271018, China
2Research Institute of Forest Ecology, Environment, and Protection, Chinese Academy of Forestry,
Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees,
Beijing 100091, China
Online publish date: 2017-08-28
Publish date: 2017-09-28
Submission date: 2016-12-24
Final revision date: 2017-02-28
Acceptance date: 2017-03-29
Pol. J. Environ. Stud. 2017;26(5):2075–2083
In order to investigate the effects of climate factors on the tree-ring width of Quercus acutissima in the rocky mountain area of northern China, correlation analysis and response function analysis were used to determine the relationship between the tree-ring width of Quercus acutissima and climate factors. The results showed that:
1. The residual (RES) chronology of the Quercus acutissima forest contained richer environmental information than standard (STD) chronology and was suitable for response analysis.
2. Tree-ring width had a general positive correlation with the average monthly temperature, a significantly positive correlation (P<0.05) with the April temperature, and a highly significantly positive correlation (P<0.01) with the May temperature of the current year. Tree-ring width had a positive correlation with precipitation from March to June in the current year, especially a significantly positive (P<0.05) correlation with May and June precipitation, and a negative correlation with precipitation from September of the previous year to February of the current year; however, the correlation coefficients with precipitation were basically lower than the coefficients with temperature basically
3. Temperature and humidity index were the main climate factors that influenced the tree-ring width of Quercus acutissima, followed by precipitation.