Abstract:Nitrogen deposition is a serious threat to the healthy development of the terrestrial ecosystem. Forests are the important part of terrestrial ecosystem, and high levels of nitrogen deposition seriously influence forest structure and function. Litter is an important part of forest ecosystem nutrient cycling,, which has an important role in the soil, forest ecological. We investigated the effects of Control(CK, no nitrogen fertilization), low nitrogen(LN, 5 g N m-2 a-1), medium nitrogen(MN, 15 g N m-2 a-1) and high nitrogen(HN, 30 g N m-2 a-1) treatments on the, nutrient contents and fluxes caused by litterfalls in a subtropical Cinnamomum camphora plantation located in Hunan Province, China. According to the results, the annual litterfall production in CK, LN, MN, and HN was(4.53±0.32) t hm-2 a-1,(3.95±0.28) t hm-2 a-1,(3.56±0.41) t hm-2 a-1 and(4.46±0.48) t hm-2 a-1, respectively, suggesting that low-to-medium N deposition decreased the litterfall production significantly. The order of nutrient contents was C > N > Ca > K > Mg, after nitrogen fertilization. Furthermore, the nitrogen content of litter had little impact on the carbon content. However, the N treatments(LN, MN, HN) decreased C/N ratios, compared with CK. The order of nutrient fluxes was C > N > Ca > K > Mg, and nitrogen fertilization reduced the amount of C, K, Ca, and Mg fluxes, but increased the N flux.