Objective To study the response of radial growth of Larix griffithii Hoof to temperature and precipitation based on the annual ring core of L. griffithii collected in the Shergyla Mountain.

Method The standard chronology was established by using the tree chronology method combined with TASP-Win and ARSTAN programs. Pearson and bootstrap calculation methods were used to analyze the correlation between ring width index and temperature and precipitation from 1961 to 2020.

Result There were significant differences in radial growth before and after temperature fluctuation. Before the temperature fluctuation, the radial growth was positively correlated with the average temperature in January and June of the year and August of the previous year (P<0.05). It was positively correlated with the average precipitation from September to October and December of the previous year and negatively correlated with that in August of the previous year. And It was significantly positively correlated with the relative humidity from January to December (P<0.01). After the temperature fluctuation, the radial growth was negatively correlated with the average temperature from March to December and positively correlated with the precipitation in August and June of the previous year.

Conclusion The climatic conditions in Southeast Tibet are extremely special. The uneven hydrothermal conditions caused by climate fluctuations is the main reason for the radial growth change of L griffithii. The short-term change of temperature in the non-growing season also has a significant indigenous impact on the radial growth of trees.