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European chestnut (Castanea sativa Mill.) is one of the most known trees occurring in Europe. Therefore history of spread of the species on this continent is a subject of interest of many authors. At present this species is naturalized in southern and middle Europe. In Poland it is often cultivated in parks, gardens but it has not been treated as a permanent element of the Polish flora so far. The closest localities, where it is naturalized, are in Czech and middle Germany. In the years 2000–2005 spontaneous spread of the species on the Baltic coast in urban sites (town of Łeba, 54°45’N, 17° 33’E) was observed, where its population amounts to one hundred of individuals dispersed up to 600 m. This is the first locality of Castanea sativa in Poland, where it occurs spontaneously. This finding would probably enable to move the border of European chestnut range in Europe towards northern-eastern direction by several hundreds kilometers.
In order to enhance the contribution of fig to the national economy and to raise farmers’ income level, it is necessary to encourage further cultivation of fig and direct farmers to fig production instead of alternative products. Most of the areas suitable for chestnut production are forestlands. There are orchards arranged with oak and chestnut trees with oak being predominant. Chestnut population in these areas should be increased. Cultivation area of this product that has many fields of use needs to be extended. Directing farmers to products that are storable in medium term with a broad market and high income is important both for the national economy and the farmers. The purpose of the present study is to remind producers the significance of two important products: fig and chestnut in the Kosk district of the Aydin province, Turkey, and to determine the areas suitable for growing these products within the study area. For this purpose the questioning and analysis features of GIS was employed. In this study, rainfall, temperature, soil texture, slope, elevation, wind direction, were taken into account to identify appropriate fields. As a result, approximately area of 13886 hectare of fig production and 3430.7 hectare of chestnut production were found as suitable area.
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