Abstract: In the context of global climate change,studying vegetation dynamics and its influencing factors is of great significance for monitoring regional ecological environment quality and improves ecosystem structure.This paper uses Theil-Sen trend analysis,Mann-Kendall test and coefficient of variation method to study the spatio-temporal variation characteristics and stability of the fractional vegetation coverage (FVC) in Zhejiang province,and analyzes the driving force of vegetation change through geographic detectors.The results show that: ①On the temporal scale,the FVC fluctuation in Zhejiang province showed an obvious upward trend from 2000 to 2023,with an increase of about 3.1%/10a (P<0.05),and the multi-year mean was 56.3%. ②On the spatial scale,the spatial distribution of FVC in Zhejiang province had significant heterogeneity,and the high-value areas are mainly distributed in the northwest,south and eastern mountainous areas of the study area. ③On the trend of change,the FVC in the study area showed an increasing trend,of which the proportion of areas with significant increase is 63.84%,and the FVC is mainly low in volatility during the study period. ④Elevation and topography are the main driving factors affecting the differences in the spatial distribution of FVC in the study area,and the q values are all above 0.6. ⑤The interactive effects between the factors are higher than the influence of a single factor,and the interactions between the factors show nonlinear enhancement and double-factor enhancement relationships.The changes in FVC are most prominently affected by the interaction between land use and population density.

Key words: fraction vegetation cover, Zhejiang province, geographic detector, geography, human factors, natural factors