Broadleaved forest vegetation seasonal dynamics under different climatic regimes

Abstract

The aim of this work was to determine seasonal dynamics of the herbaceous vegetation in the deciduous forests and their relations with climatic factors. The object of the work was Kamsha zoological-botanical reserve situated near Kaunas. Investigations were done during vegetation periods in 2008 and 2009. The dates of phenological appearance and projection cover we recorded. The spectra of vegetation and flowering were made. Vegetation of herbs started at the end of March (13th week). Intensive vegetative development started at the 14th week in 2008, and at the 15th week in 2009. The coldest year was in 2009. In this year vegetation and flowering of herbs started later than in other years. In 2008, 2009 dry period was the month of April and 2009 from the end of July till the beginning of August