FOREST MANAGEMENT 63 



would progress simultaneously. 24 The regeneration fellings are 

 not made by clear cutting, as in the Landes, near Bordeaux 

 only trees 0.60 metre (23 inches) and over in circumference 

 being felled, but this diameter limit system is varied according 

 to the amount of existing reproduction on the ground. 



As in the Landes, "tapping to death" for thinnings and tap- 

 ping alive on trees destined to form the final crop is practiced. 

 The yield from 1387 scars (on trees tapped alive with i scar) 

 averaged 1.96 litres (2.07 quarts) per year. For trees tapped 

 to death the average of 1326 scars was 1.88 litres (2 quarts). 



Treatment. It might be supposed, after the disasters 

 from fire in even-aged coniferous stands in Corsica a disaster 

 which followed the use of the shelterwood system; that the 

 selection system would be applied to the aleppo pine in Algeria, 

 but according to a recent working plan: 



"Each 25 of the three working groups will be treated by 

 the shelterwood method. The selection (system), which in- 

 creases the confusion of ages and renders difficult the removal 

 of the fellings, cannot be considered. 



"The surface of each working group will be divided into 

 'coupons' (small felling areas). The regeneration felling will 

 be laid in succession in each of these felling areas. It will 

 be made by tapping to death during a period which will be 

 determined later. 



"In this regeneration felling the trees more than 0.60 metre 

 (23 inches) in circumference must be felled, but those 0.60 metre 

 (23 inches) and below should be kept with existing regeneration. 

 In the felling areas, where the regeneration on the ground is 

 considered sufficient, all old trees will be marked for removal. 



"On the other hand, the marking must be conservative in 

 the areas where the stand consists of mature timber only, 

 without young growth already on the ground. Future re- 

 generation presents in reality several uncertainties in stands 

 of this kind." 



The working plans officer further states that in very open 

 stands only the dead and dying trees should be removed; in 

 dense stands thinning is accomplished by removing up to half 



24 See page 71 for an explanation of the provision for management. 



25 Part II, Reglement d' Exploitation, Foret de Takrouma. 



