Soil Variability Affecting by Trees rooting and Canopy Coverage in Hassan-Abad Sanandaj Afforestation

Subject Areas : forest

shetav saedi ¹ (کارشناسی ارشد جنگل شناسی دانشکده جنگلداری دانشگاه گرگان)
hashem habashi ² (استادیار گروه جنگلداری دانشکده جنگلداری دانشگاه گرگان)
vahid hosseini ³ (استادیار گروه جنگلداری دانشکده منابع طبیعی دانشگاه کردستان)

Received: 2016-01-05 Accepted : 2016-05-03 Published : 2016-05-21

Keywords: Afforestation, Tree Rhizospher, Canopy Coverage, Soil Variability,

Abstract :

Abstract   In this study trees crown covering and rooting effects on soil characteristic varability were studied. For this purpose, 4species include:pinus nigra, Cupressus arizonica, Fraxinus rotundifolia and Robinia pseudoucacia were selected with 43 years–aged affores tostion in Hasnabad–Sanandaj 22 rectungle sample plot (900m2) were chosen and allometric trees data include:DBH, height and Crown diameter were measured then annual DBH & height incremevt were calcuted. We computed crown covering percentage in plot after 43 years. Then 112 Auger soil samples in 0-20 and 20-40 cm depth around of selected trees were taken afterward subsequently physical and chemical soil characteristics were determined Roots separated by washing then volume, wet weight and dry weight were determind. Comperation   physical and chemical soil properties under canopy and around tree in different variation shown that after 43 years afferece on soil charecteris. Finally pinus nigra introduce as the best afforestation and much compatible species.

References:

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