Eurasian Journal of Forest Science

1-11

Authors: Melih Öztürk1*, Ercan Gökyer2

Based on the sunlight duration, percentage of light transmission and canopy gaps vary within the phenological stages involving budburst, flushing, leaf development, senescence, fading and leaf fall. In this study, the seasonal pattern of light transmission and canopy gaps of deciduous vegetation along a rural road section was monitored. The rural road is surrounded by forest landscape and, connects Bartın and Safranbolu cities. The road is located within the Bartın watershed of Turkey. Hemispherical photographing and image processing techniques were used to analyze the percentage of light transmission and canopy gaps throughout a foliage year in between 2012 and 2013. During 22 field visits, 220 hemispherical photographs were taken from 10 points along 700 m of the experimental site. Percentage of light transmission, and canopy gaps data were evaluated together with the daily sunlight duration data from the meteorological station. The correlation (r) between mean sunlight duration (msd) and the percentage of mean light transmission (mplt) were -0.68. On the other hand, the correlation (r) between mean sunlight duration (msd) and the percentage of mean canopy gaps (mpcg) were -0.75. Both of the correlations were highly significant (P < 0.01). The seasonal patterns of mplt, mpcg, and msd were assessed considering both the roadside vegetation and the surrounding landscape, emphasizing travelers’ and drivers’ perceptions.

19-27

Authors: M. Cüneyt Bağdatlı1*, KorkmazBellitürk2, Anahita Jabbari3

This study is performed in Nevşehir province at central Anatolian parts of Turkey. The aim of the current study was to investigate the yearly changes of rainfall and temperature climatic parameters in the long data period from 1975 up to 2014 years. The total of 40 years precipitation and temperature monthly data were first separated and classified seasonally and then were assessed by Mann-Kendall and Spearman Rho tests. The long term average of monthly rainfall data was recorded about 421 mm and the average temperature amount was calculated 20.9 °C for summer months. The maximum and minimum temperature values in summer months were recorded 33.5 °C and 7.7 °C respectively. The study was performed on long term rainfall and temperature data sets in order to investigate the transformations effects on soil and water resources, and that was obvious the rainfall data did not follow an increasing slope within different years, but a serious additive trend was observed in the average, maximum and minimum long term temperature amounts. Moreover along with the increasing temperature rate at the region, the growing surface water vaporing was recorded. The gradual reduction of rainfall amounts causes some difficulties in solution and absorption of fertilizer nutrient elements by plants and in addition leads to unsufficient amounts of soil moisture in dry farming lands.