TY - JOUR T1 - Effect of Reforestation with Pinus nigra Arnold, Pinus eldarica Medw. and Cupressus arizonica Greene Spices on some Properties of Soil (Case Study: Garan region, Marivan) TT - تأثیر جنگل کاری با گونه های کاج سیاه، کاج تهران و سرونقره‌ای بر برخی خصوصیات خاک (بررسی موردی: منطقه گاران شهرستان مریوان) JF - ifej JO - ifej VL - 2 IS - 4 UR - http://ifej.sanru.ac.ir/article-1-152-en.html Y1 - 2014 SP - 37 EP - 44 KW - Plantation KW - Needle-leaf KW - Chemical soil properties KW - Northern Zagros N2 - Protection aspects are important in Zagros Forest because degradation and soil erosion is an important problem in this area. Consequently, the responsible organizations use needle-leaf species for forest restoration. The object of this study was investigation effect of exotics needle-leaves plantation on soil quality and compare with natural soil forest in Garan research station in Marivan. In order to study soil conditions, 10 soil samples were collected from 0-20 cm depth of each plantation stand (P. nigra Arnold, P. eldarica Medw. and C. arizonica Greene) and the natural stand of Q. brantii Lindl. as control. In total, 40 samples were collected. The results showed that nutrients of soil decreased significantly under needle-leaved species than control treatment. The amount of pH, C, N, P and K were decreased 0.5-3, 4-20, 26-36, 47-55 and 10-22 percent respectively under needle-leaved compared with natural stand as control. M3 ER -