Evaluation of soil properties and flora under afforestation and natural forest in semi-arid climate of central Anatolia

摘要

Arid and semi-arid climates and antropojen effects have caused rapid deterioration of the natural resources in the watershed. The main objectives of the study were to determine the correlation between soil properties and flora and to examine some soil properties and flohstic composition under natural forest and afforestration. The topographical, geological and stand viewing maps of the watershed belong to 1955 and 2006 years were eximanedin the study. According to this study, the 14.5% rate of black pine forest in 1955 increased to 35.8% in 2006. Degraded forest, degraded black pine and agricultural area decreased respectively to 5.7,1.8 and 15.8% in 51 years. The richest families in the research area were Asteraceae, Fabaceae, Lamiaceae, Poaceae, Brassicaceae, Caryophyllaceae, Scrophulariaceae, Boraginaceae, Apiaceae and Rosaceae. The rate of the richest families was 71.75% in the total species, the remaining 22 families were scattered to 28.25% in proportion of species.