Abstract:Based on the analyses of soils with different reclamation years in Hangzhou Bay coastal wetland, the spatial distribution of nutrients and reclamation effects on nutrients such as nitrogen, phosphorous and organic matter were studied. The results indicated that soil total phosphorous (TP) content increased with the increase of reclamation year. Compared to the tideland (CK), TP in surface layers of soils reclaimed for 5, 25 and 50 years increased by 12%, 25% and 76% respectively. Soil organic matter (OM) decreased at first then increased. Compared to CK, soil OM in surface layers reclaimed for 5 and 25 years decreased by 14% and 50% respectively, while OM in soils reclaimed for 50 years increased by 87%. And soil total nitrogen showed a similar tendency to OM. The nutrients distribution in soil profiles indicated that reclamation effects on soil nutrients were significant in soil surface layers. There was a significantly positive correlation between soil TN and soil OM, but no between TP and soil OM. There was a significant correlation between particles of less than 0.01 mm and soil OM and TN. No significant correlation between textures and soil TP. Changes of soil water, texture, and reclamation year were the main factors that influence the nutrient distribution.