ORIGINAL WORKING PLAN DATA 517 



to be run over by thinnings are three in number, each will continue to form three feUina; 



, .,, . 17.02 + 16.79 + 16.86 50.67 , , 

 areas whose average area will be: = — -— = 5.63 hectares. 



"There are four periodic blocks; one is cut over for regeneration, and the other three 

 are cut over for thinnings, etc." 



(8) STATE FOREST OF PARC-ET-ST. QUENTIN (OISE) 

 The State forest of Parc-et-St. Quentin has had working plans made in 1869, 1884, 

 and 1905. As a result of experience a rotation of 120 years was found too short, because 

 of the large proportion of oak. It was, therefore, increased to 150 years. According to 

 the most recent working plan, there are two classes of stands: (1) Regeneration 

 areas over 100 years old; (2) under 100 years old, not under regeneration. 



"One observes at once that, after this classification, the group of old wood will be 

 totally deficient and that there exists a deficiency in the age sequences between the ripe 

 wood and that which comes next." 



According to the 1905 revision (page 47, original working plan): 



"The yield of the principal feUing areas wiU be obtained by dividing the volume 



of the stand in compartments 7, 8, and 9 (to be regenerated 1904 to 1923) by 20. This 



26 739 29 

 volume amounts to 26,739.29 cubic meters and the yield will be fixed at — ^ or 



1,337 cubic meters. During the same period of 20 years the yield of the improvement 



. ,,. , .„ 674.27 hectares ^^ ,„ i . 



fellmgs by area will cover -r or 67.43 hectares because the cutting cycle is 



10 years." 



Where there is difficulty in regeneration, the cuttings should be regulated according 

 to seed crops rather than to the sequence of fellings as developed. According to the plan : 



"The density of the seed fellings will be regulated so as to allow for the requirements 

 of the species — oak and beech — which ^ould be forced into the proper mixture, 

 (about half and half). The existing understory must be completely removed above 

 this size and under no pretext whatever should it be allowed to form part of the future 

 stand. The seed fellings will be followed by secondary and final f(>llings laid out exclu- 

 sively according to the cultural needs. The improvement cuttings should aim at the 

 establishment of a high forest with a suitable mixture of species and as full}' stocked as 

 possible; they will be carried out by the use of regular normal thinnings, the removals 

 limited to trees already dead or almost wholly so. ... In the young stands the 

 valuable species will be carefully freed, and in accordance with their needs the soft woods 

 and species of secondary value will be sacrificed." 



(9) COMMUNAL FOREST OF THIEZ (HAUTE-SAVOIE) 2 



PART I 



Record of Management. — General Data 



Art. 1. — Name. — Communal Forest of Thiez. 



Art. 2.^ Area. — In 1866 the area of the forest was 152.7669 hectares; it was 

 reduced to 119.51 hectares by the revised decree of January 31, 1872. A decree dated 

 June 28, 1889, authorized the sale of 22.08 hectares and put the area under manage- 

 ment at 97.43 hectares. Finally a new decree. April 11, 1900, reduced the area to 

 65.14 hectares. 



Our recent survey gives an area of 61.54 hectares, divided as follows between the two 

 cantons which compose the forest : 



2 Savoie was formally ceded to France in 1860 and prior to this date communal 

 forests were badly overcut and mismanaged. 



