%0 Journal Article
%T Temperature Effects on the Ash Colour of Forest Litter Temperat¨±ros  taka mi ko paklot s pelen  spalvai
%A Jolita D¨±dait£¿
%A Edita Baltr£¿nait£¿
%A Paulo Pereira
%A Xavier ¨²beda
%J Science ¨C Future of Lithuania
%D 2011
%I Vilnius Gediminas Technical University
%R 10.3846/mla.2011.081
%X . Research was carried out to identify the influence of temperature (150, 250, 350, 450, 550oC) on the ash colour of Acer platanoides L. leaf litter and Pinus sylvestris L. needle litter samples collected from deciduous coniferous mixed forest in Lithuania (54o43¡® N 25o19¡® E) in April 2010. To achieve the objective, a laboratory experiment was conducted to determine ash samples using the Munsell Colour Chart. The analysis of colours has demonstrated that considering all litter samples, an increase in the temperature of litter heating was found to increase ash colour values (r = 0.92; p = 0.01). All the samples (n = 50) of both litter species were divided into categories 2.5Y (5 samples), 7.5YR (10 samples) and 10YR (35 samples). The total black Munsell colour was observed at a temperature of 350oC for both litter species. Needle ash started turning bright at a temperature of 550oC while the complete consumption of leaf litter was visible at a temperature of 450oC. We conclude that the Munsell Colour Chart used for predicting the colour of ash is an informative feature to have the primary classification of ash. It is imperative to analyse the colour of the litter ash of the selected tree species in order to quickly and easily assess and predict their possible impact on the surrounding environment. Tyrimas atliktas siekiant nustatyti temperat¨±ros  tak  (150, 250, 350, 450, 550 oC) paprastosios pu ies spygli  ir paprastojo klevo lap , surinkt  i  lapuo i  ir spygliuo i  mi raus mi ko Lietuvoje (54¡ã 43  N 25¡ã 19  E) 2010- j  baland , pelen  spalvai. Laboratorijoje Munsell spalv  sistema buvo naudojama, norint nustatyti pelen  spalvos reik mes. Tyrimas parod , kad didinant degimo temperat¨±r  vis  pelen  spalv  vert s atitinkamai did jo (r = 0,92, p = 0,01). Pagal spalv  skal  visus m ginius (50) galima suskirstyti   kategorijas: 2.5Y (5 m giniai), 7.5YR (10 m gini ) ir 10YR (35 m giniai). Juoda spalva buvo stebima abiej  r¨± i  pelenuose, kurie buvo deginami 350 oC temperat¨±roje. Spygli  pelenai tapo  vies¨±s esant 550 oC temperat¨±rai, o  vies jantys lap  pelenai pasteb ti 450 oC temperat¨±roje. Galime teigti, kad Munsell spalv  sistemos naudojimas pelen  spalvai nustatyti yra informatyvus pirmin s pelen  klasifikacijos rodiklis. Straipsnis angl  kalba
%K Acer platanoides L.
%K Pinus sylvestris L.
%K temperature
%K colour
%K litter
%U http://www.mla.vgtu.lt/index.php/mla/article/view/330