The continuous provision of ecological services by wetlands is largely dependent on the stability of ecosystem functions such as biomass production. Biomass production is in turn strongly impacted by the frequency, duration and intensity of climate extremes such as droughts and floods. This is particularly true for the floodplain wetlands in the Murray-Darling Basin, which exhibits high inter-annual and inter-decadal climatic variability. In this study, I evaluated the ecological resistance and resilience to climatic anomalies in terms of maintaining biomass production for the major floodplain vegetation function types (VFT) in the southern-west New South Wales of MDB including river red gum forest, black box woodland, and open grassland. The hypothesis is that different VFTs have the same trend of biomass production over time on condition of their landscape position. Landscape position was defined by the integrated moisture index and weighted distance to water courses. Biomass production stability in response to climatic anomalies was modelled using time series (2000 - 2016, 17 years) of the Normalized Difference Vegetation Index (NDVI), temperature and drought index. More specifically, ecosystem resistance (i.e. the ability to tolerate climatic anomaly) and resilience (i.e. the recovery rate) were derived using a vector auto-regression model. I subsequently compared the stability metrics 1) between different VFTs within the same landscape position; and 2) between the same VFT at different landscape positions. The comparisons were conducted in a generalised linear mixed model (GLMM) framework. The study found that different VFTs at the same landscape position exhibited similar resistance and resilience. However, the same VFT at different positions had distinct responses to climatic extremes. These results underline the need to reassess the wetland conservation strategies.