Abstract:In order to clarify the impact of planting years on the soil carbon (C), nitrogen (N), phosphorus (P) and their ecological stoichiometry characteristics of jasmine garden, the 3-year (J-3), 10-year (J-10), 15-year (J-15), 30-year (J-30) and > 40-year (J-40) jasmine gardens in Fuzhou were taken as the research object, soil C, N, P and ecological stoichiometric ratios and their environment factors were determined and analyzed. The result showed: (1) Compared with J-3, the soil bulk density of J-10, J-30 and J-40 were decreased significantly by 29%, 19% and 18% (P < 0.05) respectively with the increase of planting years. The soil clay contents of J-15, J-30 and J-40 were significantly reduced by 26%, 12%, 30% and 12% (P < 0.05) respectively. (2) Compared with J-3, soil C and N contents of J-10, J-15, J-30 and J-40 were decreased by 82% and 236%, 73% and 199%, 149% and 488%, 201% and 481% (P < 0.05) respectively. Available nitrogen (AN) contents were reduced by 97%, 337%, 234% and 98% (P < 0.05). Compared with J-3, soil P and available phosphorus (AP) contents of J-15 and J-40 were increased significantly by 119% and 123%, 123% and 136% respectively (P < 0.05). (3) Soil C and N had a good fitting relationship (R2 = 0.96, P < 0.01), which indicated that C and N was significantly correlation and both C and N were significantly and negatively correlated with C∶N (P < 0.01), which were significantly and positively correlated with C∶P and N∶P (P < 0.01). (4) Compared with J-3, soil C∶N of J-10, J-15, J-30, and J-40 were significantly increased by 85%, 72%, 136% and 93% (P < 0.05) respectively, while C∶P and N∶P were significantly reduced by 161% and 390%, 279% and 554%, 109% and 472%, 372% and 809% respectively (P < 0.05). (5) Soil bulk density, pH, and clay content were the main factors affecting soil C, N, P and other nutrient factors and ecological stoichiometry. Soil pH was increased, and bulk density, clay contents were decreased with the increment of jasmine planting years. The physical and chemical structures of the soil were improved. On the whole, soil C, N, P and their ecological stoichiometric characteristics, physical and chemical properties of the jasmine garden in Fuzhou will undergo certain changes with the increment of planting years. These changes would be inconducive to the planting of jasmine, so further optimized fertilization and soil improvement will be need for achieving sustainable production of jasmine.