Metodyczne i praktyczne aspekty planowania małej retencji
Wydział Inżynierii Środowiska i Gospodarki Przestrzennej (Uniwersytet Przyrodniczy w Poznaniu)
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mała retencja wodna
metodyka planowania
Methodical and practical aspects of small water retention planning The scientific aim of the study was analysis of the practical and methodological aspects of the use of geographic information systems GIS and digital spatial databases to create plans and programs of small retention at local and regional level. The practical aim of the study was to develop a universal methodology based on GIS technology and digital spatial databases, to make a map of optimum solutions for small retention issues and to verify the suitability of the topographic attributes describing quantitatively the influence of topography on the course and dynamics of hydrological processes, to support decision-making in the selection of optimum locations for future development of small retention. Realization of the above specified aim of the study involved five stages: construction of spatial database, diagnosis of the natural environment condition, evaluation of current retention capabilities and problems associated with the occurrence of droughts and floods, indication of optimal methods of water retention resulting from natural conditions together with determination of hierarchy of urgency of their implementation, and estimation of the environmental impact assessment of the developed small retention project. The authors have many year experience, especially related to the development of the retention program capacity of the Dzierżoniów region for 2014–2020, which was carried out in the framework of the project “Partnerstwo JST Ziemi Dzierżoniowskiej – wspólnie w stronę zrównoważonego rozwoju”. The monograph can be a source of knowledge about the complex relationships that occur in the natural environment and are related to the planning of small retention. It has been written taking into account the requirements imposed on this type procedures in the aspect of the natural environment protection, in particular on the Natura 2000 areas. The book also emphasizes the need to implement small retention projects as a part of integrated water resources management, which involves a comprehensive assessment of the water retention needs, also in comply with new documents and strategic planning at local, regional and national scale in relation to catchment areas. On the basis of the analysis conducted, it can be concluded that the use of diverse and updated information is a prerequisite to develop rational plans and programs of small water retention. For this purpose it is necessary to use spatial analysis tools available in the GIS programs and decision support systems. Geographic information systems GIS is a powerful tool to support the process of making plans and realization of small retention projects because of the wide range of opportunities for input, storing, processing and analyzing of data and visualizations of the results. To further optimize the use of these systems it is necessary to continuously develop and update spatial databases at the institutions responsible for water management.