This study aims to reveal the relationship between major climatic factors and radial growth in

Siu-ri, NamYangJuSi, Kyeonggido. To identify tree growth responses to climatic variation, we used

correlation analysis after standardization and cross-dating of tree ring growth. We use the climatic

data(monthly mean, minimum, maximum temperature and precipitation) from September of previous

year to August of current year. In terms of relationship between mean, minimum, maximum temperature and tree ring growth, negative correlations were observed in September and October of

the previous year. In case of Quercus mongolica, negative relationship were appeared in December

of the previous year, January and February of present year. When it comes monthly maximum temperature,

August and September of present year was negatively correlated with radial growth in the

case of Pinus densiflora. We can conclude that reduced soil moisture due to high temperatures causes

a water stress that stunts tree growth. In contrast, there are positive correlations in March of

present year. These results suggest that high temperatures in March appear to prolong the growing

season. Growth was positively correlated with precipitation from October to December of previous

year and from May to September of present year. The results suggest that the smooth water

supply from precipitation can promote the tree growth.