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Báo cáo lâm nghiệp: " Survival and growth of Pinus halepensis Miller seedlings in a semi-arid environment after forest soil transfer, terracing and organic amendments"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế, đề tài: " Survival and growth of Pinus halepensis Miller seedlings in a semi-arid environment after forest soil transfer, terracing and organic amendments. | 1099 Ann Sci For 1996 53 1099-1112 Elsevier INRA Original article Survival and growth of Pinus halepensis Miller seedlings in a semi-arid environment after forest soil transfer terracing and organic amendments A Roldán I Querejeta J Albaladejo V Castillo Centro de Edafologia y Biologia Aplicada del Segura-CSIC Apdo 4195 30080 Murcia Spain Received 27 April 1995 accepted 3 January 1996 Summary - A field assay was carried out to evaluate the effectiveness of several methods for the afforestation of a semi-arid area of southeast Spain with Pinus halepensis. The trial was designed as a two factor factorial with four soil preparation treatments as the first factor mechanical terracing manual terracing manual terracing with the addition of urban solid refuse USR and mechanical terracing with USR and the addition of fresh forest soil to the planting hole as the second factor. Twenty-one months after planting the methods involving the addition of USR significantly enhanced p halepensis performance mechanical terracing with USR being the most effective treatment in improving the survival and growth of the pines. The addition of forest soil significantly enhanced p halepensisgrowth in all the soil preparation treatments except in the manual terracing with USR. p halepensis growth was strongly correlated with soil moisture content r 0.83 p 0.01 which was greatest in the mechanical terracing with USR treatment. Soil fertility levels which were improved by organic amendment were significantly correlated with seedling growth particularly the phosphorus rates r 0.75 p 0.05 . The positive effect of added forest soil appears to be of a microbiological nature. afforestation Pinus halepensis I terracing organic amendment soil transfer Resume - Survie et amelioration de la croissance de plants de Pinus halepensis Miller dans un environnement semi-aride après apport de sol forestier travail du sol et amendement organique. Nous avons mis en place un essai d amelioration de la croissance