The Sezibwa wetland system is one of the four proposed sites to monitor long-term ecological and socioeconomic trends in Uganda’s wetlands. Map A shows the location and extent of this system. It is located south of Lake Kyoga and composed of two permanent wetlands (shown in orange) following the Victoria Nile River and the Sezibwa River and a multitude of smaller seasonal wetlands (shown in purple), the latter representing two-thirds of the total area of the system. The map also displays where people collect or use water from their wetland (based on data from the National Wetlands Information System). Similar to the national picture, both seasonal and permanent wetlands are used for water provision but that source of water is defined as unsafe (MWE, 2007).

Map B shows the density of households without sanitation facilities (based on data from the 2002 Uganda Population and Housing Census) for each parish neighboring this wetland system. This density indicator can be interpreted as a proxy to delineate source areas of higher potential pollutant loads (bacteria, pathogens, etc.). The upper reaches of the Sezibwa system following the boundaries of Kayunga, Jinja, and Mukono Districts have the highest density of households without sanitation facilities (shades of dark green).

MAP C组合地图A和MAPB。此简单覆盖提供以下见解：

  • 依靠高污染物源地区附近开放水源的人们患有水传播疾病的风险更高（深绿色教区的蓝点）。这种风险在Kayunga区的南部最大。

  • 湿地的过滤功能在污染物载荷最高和大量不安全的退水源的区域中可能最有价值（尽管更详细的水文研究可能建议其他位置，并且只选择了选择的湿地）。

重要的是要指出，仅湿地管理不能代替投资适当的卫生设施，安全的饮用水来源以及促进更好卫生行为的努力。但是，湿地管理与环境健康干预措施之间的紧密合作可以帮助减轻脆弱社区的风险：

  • 湿地管理干预措施可能需要优先考虑其水处理功能最有价值的湿地的保护，从而支持卫生部打击水传播疾病。

  • 另一方面，水和卫生部门可能希望优先考虑新的卫生基础设施和安全的饮用水源，在这些基础设施中，污染物负荷太高，无法降低湿地的承载能力来过滤污染物。

资料来源：地区行政边界（UBOS，2006a），教区行政边界（Ubos，2002b），水体（NFA，1996; Nima，1997; Brakenridge等，2006），使用湿地（Wid，2006），湿度类型(NFA, 1996), and density of households without sanitation facilities (authors’ calculation based on UBOS, 2002b).