Spatial and Temporal Variation Characteristics of Climate Production Potential in Shandong Province from 1961 to 2019

Based on annual average temperature and annual precipitation data of 21 meteorological observation stations in Shandong Province from 1961 to 2019，Miami model and the Thornthwaite commemorative model were used to calculate temperature，precipitation and climate production potential.Climatic tendency rate，GIS spatial interpolation and R/S methods were used to analyze change trend.Results showed that temperature production potential increased at a rate of 25.1 g/（m2·10a）.Precipitation production potential showed a decreasing trend，and deceleration rate was 17.71 g/（m2·10a）.Climatic production potential showed an increasing trend with increasing rate of 0.742 g/（m2·10a），and multi-year average was 1106.0 g/m2.In terms of spatial distribution，distribution of temperature production potential and precipitation production potential was basically consistent with distribution of annual average temperature and annual precipitation，while climate production potential decreased from southeast to northwest.Both temperature and precipitation had a positive effect on climate productivity，with precipitation being the main limiting factor.The R/S results showed that temperature production potential had a strong continuous upward trend，precipitation production potential would continue to decrease，and climate production potential would continue to increase in the future.