Ábrahám Levente (szerk.): Válogatott tanulmányok V. - Natura Somogyiensis 17. (Kaposvár, 2010)

SALAMON-ALBERT, É., ORTMANN-AJKAI, A., HORVÁTH, F., & MORSCHHAUSER, T.: Klíma és élőhelytípusok Belső-Somogy, Külső-Somogy és Zselic vegetáció alapú tájegységeiben I. Klímafelszínek és az erdei élőhelyek éghajlati tartománya

68 NATURA SOMOGYIENSIS 16 J K L R Fig. 1: Relative distribution of woody habitat occurrence in vegetation-based landscape regions. (Abbreviations see in Material and methods) (R), mostly plantations dominate in Belső- and Külső-Somogy (12%, 14%), far less widespread in Zselic (7%). Woody pastures (P45), characteristic and spectacular remnants of former traditional landuse, in Belső-Somogy cover (partly degraded) 5440 ha (0.6%). Results Climatic surface of the regions Climatic surface is a realized range of climatic variables that could effect pattern and distribution of vegetation types potentially in geographical or natural landscape areas. In Table 1 basic statistics of 19 calculated bioclimatic variables, as minimum, maximum, mean values and their ranges are given for the studied regions. Referring to general climatic position the most relevant indexes are the annual mean of temperature (BIOCLIM 1) and the annual precipitation (BIOCLIM 12). The annual mean temperature varies between 9.8 °C and 11.3 °C, its maximum range is 1.5 °C in Külső-Somogy. Maximum and mean values and the range are the lowest in Belső-Somogy region. Annual mean precipitation (BIOCLIM 12) varies between 562 to 753 mm per year. Minimum, maximum and mean of this variable occur with the highest values in BelsőSomogy region, maximum range occurs in Külső-Somogy region. Bioclimatic indexes according to a short period (e.g. a month or a quarter) could have a hard climatic limitation for the vegetation. Mean values in maximum temperature of warmest month (BIOCLIM 5) are quite similar in the regions, but the minimum values and the range significantly differs in Külső-Somogy and Belső-Somogy region with its extremities. Among values in minimum temperature of coldest month (BIOCLIM 6), the highest maximums of minimum, maximum and mean values can be observed in BelsőSomogy, range is the biggest in Külső-Somogy region. Minimum value in Zselic, maximum value and mean in Belső-Somogy, and the range in Külső-Somogy is the highest by precipitation of wettest month (BIOCLIM 13). In values by precipitation of driest month (BIOCLIM 14) can be seen similar distribution among the regions. Generalized variable of temperature seasonality (BIOCLIM 4) has the highest values in BelsőSomogy and Külső-Somogy regions, as also the maximum values of precipitation sea-