a. Data content (data file/table name, including observation index content) Data File Name: Jilin Province Accumulated Daily Average Temperature Dataset (2000-2014) b. Construction purpose Study the trend of temperature changes over the years in Jilin Province, and explore its impact on crop yield and ecological environment. c. Service object Students and researchers engaged in research related to meteorology, ecology, agriculture, etc. d. Time range of data Data collection period is from 2000 to 2014 e. The spatial range and projection method of data Jilin Province