SILVICULTURE SECTION 



Inventory Unit 



Capital Air Surveys Limited completed 1,182 square miles in the Cochrane 

 and Kapuskasing Districts, which represents the completion of the 1961 rephotog- 

 raphy contract. Hunting Survey Corporation Limited photographed 9,420 square 

 miles in the Port Arthur and Geraldton Districts, leaving 14 square miles to be 

 completed in 1964. The 1963 rephotography contract was awarded to Hunting 

 Survey Corporation Limited, covering the Districts of Gogama, Chapleau and 

 White River. Of the 14,340 square miles this contract represents, 14,049 square 

 miles was completed, leaving a carry-over of 291 square mlies in 1964. 



Field Work was located in the Districts of Cochrane, Kapuskasing and Port 

 Arthur. Six field parties using the wedge prism method of cruising obtained ground 

 samples in the following Crown Management Units: — Cochrane, Timmi^s, Kapus- 

 kasing, Northern, Hearst, Oba, Black Bay, Sibley, Fort William, Shebandowan 

 and Northern Light. 



Photo interpretation was completed on 9,000 square miles of the above field 

 work. Forest stand maps on a township basis were completed on 9,508 square 

 miles of the Spanish River, Gooderham, Bancroft, Dacre and Huntsville Crown 

 Management Units, and the Agreement Forests located in Lake Simcoe, Lake 

 Huron and Lake Erie Districts. Tabulated forest ledgers representing area classi- 

 fications, detailed stand descriptions, and summaries by age classes and site* classes 

 were completed on 7,811 square miles of the Spanish River, Gooderham, Trout 

 Lake, Bancroft, and Dacre Crown Management Units, and the Agreement Forests 

 in Lake Simcoe, Lake Huron and Lake Erie Districts. 



The multiplex plotting machine was used to interpret contours and form 

 lines and prepare plans for Parks Branch. Under this program plans were com- 

 pleted for Middle Falls Park, 3.4 square miles at a scale of 500' = 1 inch with 10' 

 contour intervals, and Bottle and Sucker Lakes Park, 4.4 square miles at a scale 

 of 600' == 1 inch with 20' contour intervals. 



The use of planimetric and forestry maps remained at a high level and were 

 reproduced as white prints under a one-year contract to Atlas Helio Company 

 Limited. The photoprocessing staff produced 109,013 contact prints; 1,687 photo 

 mosaics at a scale of 1" = 1 mile, 83 at a scale of 2" = 1 mile, and 1,269 at a 

 scale of 4" = 1 mile; 2,729 enlargements; 15 film diapositives, 26 Multiplex plates 

 and 541 Kelsh plates; 694 copy negatives; 678 cronaflex prints, and developed 83 

 35mm slides and 4 rolls of aerial film. 



Silvicultural Operations 



The work carried out in this unit is concerned with securing regeneration of a 

 new stand of desirable species or improving the quality of an existing stand. For 

 administrative purposes, this work is broken into the following groupings: — 



A. Artificial Regeneration; 



B. Stand Improvement; 



C. Special Projects. 



The emphasis of Silvicultural Operations is on obtaining adequate regenera- 

 tion. Information presently assembled indicates an annual need for regeneration 

 treatment on approximately 145,000 acres. Surveys conducted recently indicate that 

 an annual regeneration treatment programme, including a reasonable rate of 

 retiring the backlog of old cut-over and burned-over areas on Crown lands should 



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