 The study applies a process-based biogeochemistry model to evaluate how inter-annual changes in wetland inundation extent might have influenced carbon dynamics in the region between 1993 and 2004. The results show that consideration of inter-annual variations in wetland inundation extent resulted in regional estimates of net methane sources of 67.8 tGCH4YR1, which is intermediate to model estimates using two static inundation extent data sets. In contrast, consideration of inter-annual changes in wetland inundation extent resulted in regional estimates of the net CO2sink of minus 1.28 pGCYR1 with a persistent wetland carbon sink from minus 0.38 to minus 0.41 pGCYR1 and an upland sink from minus 0.82 to minus 0.98 pGCYR1. The study also indicates that wetlands play a disproportionately important role in affecting regional greenhouse gas budgets given that they only occupy approximately 10% of the total land area in the region. This article was offered by Qian Lai Zhuang, Su Dong Xiu, Yu Jie He and others. We are article.tv, links in the description below.