Gewässer-Ökomorphologie (OGD)

With the construction of settlements and transport routes as well as the intensification of agriculture, the area of river waters has been increasingly narrowed over the past decades. Extensive structural measures changed the natural course of the streams to protect infrastructure and agricultural crops from flood damage. In many places, these installations affect the ecological functioning of the waters. In order for a water to function as a habitat, it requires not only good water quality, but also natural morphological and hydrological conditions. The first data collection took place between 1997 and 1999. In 2005, a partial revision of about 500 km was made. Between 2009 and 2012, a new survey was carried out in the field for around 1 500 km. For the remaining approximately 2 200 km, the data from the initial survey were transferred to the current water network. As part of the conversion of the water network to official survey data in 2014, the ecomorphology data were also transferred to the official survey data. As of 2015, the data will be continuously tracked. In 2019, in addition to the river waters, the lake shores with respect to ecomorphology were also collected and assessed.近数十年来，随着定居点与交通线路的兴建以及农业集约化程度提升，河流水域面积持续缩减。为保护基础设施与农作物免遭洪涝破坏，大量工程措施改变了溪流的天然径流路径。在诸多区域，此类工程设施会对水域的生态功能造成影响。水体若要发挥栖息地功能，不仅需要优良的水质，还需具备天然的形态与水文条件。 首次数据采集工作于1997年至1999年间开展。2005年，完成了约500公里河段的局部复测修订。2009年至2012年间，针对约1500公里河段开展了全新的野外实地勘测。剩余约2200公里河段的初始勘测数据，则被迁移至当前水系网络中。2014年，在将水系数据转换为官方勘测数据的工作中，生态形态学（ecomorphology）数据也一并同步至官方勘测数据集。自2015年起，该数据集实现持续动态更新追踪。2019年，除河流水域外，针对湖岸的生态形态学相关数据也完成了采集与评估工作。