TAILIEUCHUNG - Báo cáo khoa học: "New perspectives in German oak silviculture GK Kenk"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "New perspectives in German oak silviculture GK Kenk. | Ann Sci For 1993 50 563-570 Elsevier INRA 563 Original article New perspectives in German oak silviculture GK Kenk Forstliche Versuchs- und Forschungsanstalt Baden-Wurttemberg Wonnhaldestr4 W-7800 Freiburg Germany Received 6 January 1993 accepted 2 June 1993 Summary After decades of negligence oak Q petraea and Q pedunculata is now being replanted throughout Germany on an increasingly wider scale. For the first time the amount of oak now established in Baden-Wurttemberg is the same as it was 100-200 yr ago. This is a result of both ecological and economical factors. The concepts involved in establishing and tending an oak stand vary considerably - as do the costs. New perspectives in silviculture and in the proliferation of oak management have evolved from 3 areas recent research findings in the field of wood technology which indicate a change towards lower planting densities new developments in forestry equipment or equipment previously not used in forestry which now make it possible to plant an assortment of larger oaks without even having to clear the area and the awareness that naturally regenerated pioneer trees and other tree species can replace intra-species competition in oak. Stands of 100-yr-old oak planted in rows of up to 5 X 2 or in some cases 5 X 5 m exist and are highly considered for their quality and diversity. All 3 areas-wood technological findings new techniques used to grow stands and the utilization of natural seedings combined with controlled goal-orientated intervention - result in a decrease in the percentage of oaks planted per ha and lead to a drastic reduction in planting and maintenance costs without in the author s opinion jeopardizing the quality of the wood. Thus an oak stand can be established at the same cost as a spruce of Douglas-fir stand and is therefore an alternative worth considering by the private forest owner. silviculture economy wood quality Q petraea I Q robur Resume Nouvelles perspectives pour la sylviculture du chêne

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