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: The paper presents the results of observations of distribution of maximum snowpack water equivalent in the low-mountain landscapes of the Maima river in different by snow amount winters. We performed the analysis of weather conditions during cold periods of 2014/15-2018/19. The data on precipitation and average monthly temperature Показать полностьюfor the mentioned above periods were compared with average long-term values for 1999-2019. The snowpack water equivalent as well as evaporation loss in the low-mountain forest landscapes of the Maima river basin largely depended on meteorological parameters of the cold period. Based on the use of the landscape map as well as on the introduction of adjustments to the terrain and underlying surface properties, snow cover analysis algorithm was proposed. Its application is feasible when studying snow accumulation in low-mountain landscapes. It was found that the highest excess of winter precipitation over average long-term values was recorded in cold periods of 2014/15, 2016/17, whereas the lowest were typical for 2015/16, 2017/18 and 2018/19. According to average monthly air temperatures, the winters under study were warm. The data on in the situ measurements and calculations suggest the dependence of snow accumulation in the basin on an altitude gradient, vegetation features, exposure and surface steepness. A snowpack water equivalent was high in chern-taiga landscapes on ubacs (north-western, northern and north-eastern expositions) with up to a 20° inclination angle and with small-leaved forests, and low one in the sub-taiga part of the basin on adrets (south-western, southern and south-eastern) and transitional (western and eastern) expositions with an inclination angle more than 20°, where primary coniferous forests prevailed.
Журнал: Географические основы и экологические принципы региональной политики природопользования
Номера страниц: 156-160
Издатель: Институт географии им. В.Б. Сочавы Сибирского отделения Российской академии наук