Abstract: Emissions initial allocation (EIA) is the basis and starting point of emission trading, and the allocation models and the empirical analysis need further study. Five different allocation models including regional population model (RPM), economic amount model (EAM), historical emission model(HEM), environmental capacity model (ECM) and comprehensive distribution model (CDM) were used to measure EIA amount of chemical oxygen demand (COD) and ammonia nitrogen in 11 administrative regions of Poyang Lake watershed. Results showed that the distribution patterns of COD and ammonia nitrogen EIA were almost the same in our study. EIA amount was higher using EAM than other models in Nanchang, Xinyu and Yingtan administrative regions. EIA amount was higher using PAM than other models in Shangrao and Ji'an administrative regions. EIA amount was higher using HEM than other models in Jiujiang and Jingdezhen administrative regions. EIA amounts were higher using ECM and CDM than other models in Ganzhou and YiChun administrative regions, respectively. Based on CDM, EIA amount was the highest in Ganzhou, followed by Nanchang, Jiujiang, Ji'an, Yichun, Fuzhou and Shangrao, and was the lowest in Jingdezhen, Pingxiang, Xinyu and Yingtan administrative regions. EIA amount varied in different models and CDM would be the most reasonable models in Poyang Lake watershed. In order to promote regional coordinated development of economy, society and ecological environment, we suggest to strictly implement EIA amount measured by CDM for each of 11 administrative regions in Poyang Lake watershed.

Key words: Poyang lake watershed, Emission permits, Emissions initial allocation, Administrative region differentiation