Analysis of Change Characteristics of Thermal Resources in the South of Qinghai Lake During 1961-2023
[Objective]To analyze the change characteristics of thermal resources in the south of Qinghai Province.[Method]Using the daily average temperature in Gonghe County,south of Qinghai Lake from 1961 to 2023,the mathematical statistical methods such as linear trend,moving average and Mann-Kendall method were used to explore the change characteristics of the initial day(the ending day)≥0℃,≥10℃,duration and accumulated temperature in this area.[Result]The initial day≥0℃and≥10℃showed an extremely significant advance(de-lay)trend.The initial day≥0℃and≥10℃was a sudden change from late to early in 2001 and 1985,the ending day≥0℃and≥10℃mu-tation from early to late occurred in 1994 and 1988.Duration days≥0℃and≥10℃showed an extremely significant increase trend,mutation from short to long occurred in 1995 and 1978.The accumulated temperature of≥0℃and≥10℃showed an extremely significant increasing trend.The mutation from less to more occurred in 1993 and 1987 respectively.[Conclusion]The increase in heat resources is extremely benefi-cial for agricultural production and crop growth.
Thermal resourcesAccumulated temperatureInitial and ending dayDurationChange characteristicSouth of Qinghai Lake
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