Development of water resources infrastructure largely decoupled floodplains and wetlands from rivers due to alteration of streamflow patterns. However, there is limited understanding of undesirable changes in streamflow patterns due to flow regulation. This study aimed to examine effects of flow regulation and rainfall variation on: 1) long-term flow, 2) upstream and downstream flow, and 3) seasonal flow patterns in the Goulburn-Broken catchment in Victoria, Australia, and discuss the implications for floodplains and wetlands. The non-parametric Mann-Kendall test and other statistical methods were used to analyse changes in long-term (1884–2018), upstream and downstream (1977–2018), and seasonal flow patterns of Goulburn River. Results showed that average annual discharge of Goulburn River decreased over 59% during the post-change period (1957–2018) as compared to pre-change (1884–1956) discharge mainly due to flow regulation and diversion (>86%). This reduced frequency of overbank flows from once every 1.6 years in the pre-change period to once every 5 years in the post-change period. This extended disconnection of floodplains from the Goulburn River has had detrimental effects on biota. Finally, generation of adequate overbank flows and maintaining natural variability of high and low flows with a riverine functional flow approach is recommended to rejuvenate floodplains and wetlands.

由于水流模式的改变，水资源基础设施的发展很大程度上使洪泛区和湿地与河流脱钩。但是，由于流量调节，人们对流量模式的不良变化的了解有限。这项研究旨在检验流量调节和降雨变化对以下方面的影响：1）长期流量，2）上游和下游流量以及3）澳大利亚维多利亚州古尔本-破碎流域的季节性流量模式，并讨论了对洪泛区和湿地。非参数Mann-Kendall检验和其他统计方法用于分析古尔本河的长期（1884–2018），上游和下游（1977–2018）以及季节性流量模式的变化。结果表明，与变更前（1884–1956）相比，变更后（1957–2018）的古尔本河年平均流量减少了59％以上，这主要是由于流量调节和分流（> 86％）所致。减少的超额存款频率从变更前的每1.6年一次减少到变更后的每5年一次。洪泛区与古尔本河的延长隔离对生物区系产生了不利影响。最后，建议使用河流功能性流量法生成足够的过高流量，并保持高流量和低流量的自然可变性，以使洪泛区和湿地恢复活力。变更前期为6年，变更后期每5年一次。洪泛区与古尔本河的延长隔离对生物区系产生了不利影响。最后，建议使用河流功能性流量法生成足够的过高流量，并保持高流量和低流量的自然可变性，以使洪泛区和湿地恢复活力。变更前期为6年，变更后期每5年一次。洪泛区与古尔本河的延长隔离对生物区系产生了不利影响。最后，建议使用河流功能性流量法生成足够的过高流量，并保持高流量和低流量的自然可变性，以使洪泛区和湿地恢复活力。