معرفی و شناسایی گونه های درختی سریع الرشد برای مناطق مختلف ایران

In the past time more area of our country were covered by forest, but now limited area remain in some regions with natural forest trees. Intensive grazing, trees cutting, degradation of vegetation and other factors replaced the forest with desert and barelands, which results are decreasing of vegetation cover and increasing of soil degradation and erosion. Violent floods and sand storms threat the villages, cities and agriculture fields. And there effects are irrepealably damages for our country natural resources. Because of the more area of Iran have arid and semi arid climate, the forest plantation is necessary in this country. Tree plantations are especially for pulpwood production for the paper mill industry, firewood, fence, security, desertification, park, soil conservation and erosion control. In the mentioned conditions, we try to identification, select and plant of fast-growing trees. In this research each fast-growing tree botanical characteristics and its ecological needs are identified. Soil physical and chemical properties are regarded in each zone too. Also, we study the properties of each climate zone of Iran, and as for the each zone properties and fast-growing three characteristics, we introduce the adaptable and suitable fast-growing trees.