SEASONAL VARIATION IN LIGHT TRANSMISSION AND CANOPY GAPS OF DECIDUOUS ROADSIDE VEGETATION: ASSESSMENT WITHIN FOREST LANDSCAPE

摘要: Deciduous roadside vegetation exhibits seasonal patterns of foliage with varying colors and numbers. Hence the alternating percentage gaps within canopy allows changing percentages light transmission throughout year. The leafless in winter is sequentially subject to budburst, flushing, development stages until summer, when leaves are fully developed both size number. Then, defoliation follows senescence, fading fall occur sequence becomes winter. transmission, gaps, sunlight duration different these stages. In this study, pattern deciduous along a rural road section that surrounded by forest landscape connected two cities was monitored. selected for study located Bartin watershed Turkey. Hemispherical photographing image processing techniques were used analyze year between 2012 2013. During 22 field visits, 220 hemispherical photographs taken from 10 points 700 m experimental site. Percentage data evaluated together daily meteorological station. correlations ( r ) mean msd 1) mplt 2) mpcg -0.68 -0.75, respectively. Both highly significant P < 0.01). , assessed considering surrounding landscape, emphasizing travelers’ drivers’ perceptions.