Abstract:

To quantitatively assess the meteorological conditions for Qinglong chestnut growth, and obtain scientific and reliable fruit certification results, based on the measured data of meteorological station in Qinglong from 1971 to 2018, the temporal variations of climate factors including temperature, sunlight and water were analyzed, and a comprehensive meteorological evaluation index C (0C≤1) was established by DTOPSIS method. Taking 2008 to 2018 as examples, the chestnut climate quality was certified and compared with the C value. The results showed that from 1971 to 2018, the variation of temperature had a significantly increasing trend, precipitation and sunshine hours were decreased, January was the coldest with the least precipitation, July was the hottest with the most precipitation; 45.8% of the years had C≥0.5, the larger the C value, the more suitable the meteorological conditions for chestnut. There was a positive correlation between the quality grade of chestnut and the C value, which had a good indication for the evaluation and prediction of chestnut fruit in the future.

Key words: Meteorological Conditions, Climate Resources, Variation Trend, DTOPSIS Method, Qinglong Chestnut, Climate Quality