Abstract: Nutrient release of leaf litter decomposition plays an important role in sustainable maintenance of soil quality, nutrient balance and plant productivity. In the present study, we investigated the response of leaf litter mixture decomposition rate and nutrient dynamics of Larix kaempferi-Pinus koraiensis mixed plantation and Larix kaempferi-Alnus japonica mixed plantation to three mixing ratios (75∶25, 50∶50, 25∶75) by using litter bag method in May 2015. The results indicated that A. japonica had the highest mass loss, while P. koraiensis had the lowest when considering the decomposition of singlespecies litter. The mixture of L. kaempferi and A. japonica at the 3 mixing ratios had an antagonistic effect on N release, but the leaf litter mixture of 25% L. kaempferi and 75% P. koraiensis showed a promoting effect on N release. Therefore, the leaf litter mixtures of L. kaempferi+A. japonica and L. kaempferi+P. koraiensis showed nonadditive effects, and the N and P releases were influenced by mixing ratios during decomposition.

Key words: relative brightness temperature, mitigating thermal field, afforestation project, correlation, city and suburban area