Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: Географические основы и экологические принципы региональной политики природопользования; Иркутск; Иркутск
Год издания: 2019
Аннотация: Inland waters, and especially lakes, have important functions in the environment. Water levels in dry regions have a strong seasonal pattern. Since the 1990s remote sensing has found increasing applications in wetland monitoring. Using multiple images from multiple years, it is possible to estimate the frequency and duration of inuПоказать полностьюndation of each depression. There are many investigations of wetlands for Prairie Pothole Region in North America. The water balance of prairie pothole wetlands is highly sensitive to year-to-year variations of precipitation and thus have highly variable areas of ponded water. During the past years, several classification systems have been applied to wetland in the Prairie Pothole Region. The pond permanence was suggest as a one of qualitative descriptor. Very few investigations on the dynamics of lakes and wetlands for the territory of Russia. Ob Plateau is semi-arid, with decreasing precipitation/increasing evaporative demand from west to east. The semi-arid to sub-humid climate means that on an annual basis potential evaporation exceeds precipitation so that ponded water in depressions is mostly lost to evapotranspiration with limited surface-water connections between the ponds, lakes and streams. As a result of this setting, the water balance of wetlands is highly sensitive to year-to-year variations of precipitation. A Landsat time series (1989-2018) was used to document variation in surface-water extent over time and was related to wetland and lake datasets. There is classification of wetlands was designed and adapted for Ob Plateau. Some classes of natural ponds are recognized: permanent lakes, semipermanent lakes, seasonal ponds and ephemeral ponds.
Журнал: Географические основы и экологические принципы региональной политики природопользования
Номера страниц: 273-278
Издатель: Институт географии им. В.Б. Сочавы Сибирского отделения Российской академии наук