| Based on the daily meteorological observation data of Xinzhou City from 2001 to 2023, the climate suitability model of sea buckthorn leaf tea was constructed by using fuzzy mathematical method and weighted average method, and the comprehensive temperature, precipitation and sunshine suitability distribution of sea buckthorn leaf tea in the new shoot growth period (May to September) was obtained. The distribution of comprehensive climate suitability in the growth period of sea-buckthorn shoots was finally obtained by geometric average method, and the correlation between climate suitability and altitude was discussed. The results showed that:(1) Xinzhou's comprehensive temperature suitability (0.73-0.89)≈sunshine suitability (0.72-0.88) > precipitation suitability (0.49-0.59), indicated that precipitation was the main limiting condition for the growth and development of sea buckthorn leaves.The high temperature suitability areas were located in Ningwu, Jingle, Wuzhai, Kelan and Wutai in the east，and The high precipitation suitability areas were located in the western part of Xinzhou. In central and eastern Xinding Basin, the suitability degree was lower, and the distribution of illumination suitability degree was similar to that of illumination suitability degree; (2)The spatial distribution areas of comprehensive climate suitability were located in the west of Xinzhou. The climate suitability decreased first and then increased in the new shoot growth period, indicated that sea-buckthorn was most suitable for growth and development in May-July., and the climate suitability changed with time from 2001 to 2023. The climate suitability was also closely related to the altitude. The suitability first increased and then decreased within the altitude (800-1600m), and reached the maximum value at 1400m. |