Comparison of the quality of thalweg lines extracted from data of DMR 4G, DMR 5G and its derivatives

ABSTRACT Determining the gradient of watercourses in the case of local applications is a common problem, which is most often dealt with by geodetic surveying. However, determining the gradient of all watercourses in the Czech Republic is a challenge. The use of geodetic methods on such a scale is usually unrealistic. Therefore, it is necessary to choose a different approach, such as the extraction of the gradient lines from other already existing elevation data. The DMR 4G and DMR 5G are elevation models currently… Read more »

Disappeared pond system in the lower Doubrava river

This article presents the results of research of the pond landscape development in the lower Doubrava river. The results are based on the interpretation of archival map documents and the current state of the site. On the map of the 1st military mapping (1764–1768), a system of thirteen ponds was recorded on the right bank of the Doubrava river. There were three ponds on the left bank of the Doubrava river. On the map of the 2nd military mapping (1836–1852), only four ponds were recorded on the right bank of the Doubrava river and only two ponds on the left bank of the Doubrava river. Of the historic pond system, only Koukalecký pond and a pond near Žehušice chateau have survived to the present day. On the 1st military mapping map, the total approximate area of the ponds was 449 ha, on the 2nd military mapping map it was 107 ha, and today only 0.91 ha.

Interview with Ing. Petr Kazda, Director of Partnership Environmental Foundation

Do you know Tree of the Year, Planting for the Future, and the Adapterra Awards? And do you know what an Open Garden is? Do you use Greenways? All this and much more is related to the Partnership Environmental Foundation in Brno, whose director since 2019 has been Ing. Petr Kazda. Why is climate change a challenge for him that can bring us new opportunities?