SILVICULTURS AND SOIL 



The activities of the Sllvloultore and Soli Researoh team for the 

 fiscal year 195*<-55 were concentrated in the continuation of previously estab- 

 lished programs and projects* Preliminary discussions were held and plans made 

 for several new programs. 



Regional Site Research 



The main purpose of this program, which was initiated in 19Mt-y is to 

 evaluate land in its capability to produce forest, fish, and wildlife, both in 

 regard to yield and quality, and to evaluate the capability of undeveloped 

 northern Ontario Isuids for agricultural developmente 



Field work was concentrated in the white pine belt of the South Centred 

 and the South Eastern regions. Reconnaissance work provided supporting data for 

 previously established site districts* Field surveys covered 6,000 square miles 

 of which ^,000 square miles were mapped on a landtype basis. More detailed 

 information was obtained concerning the interrelationships of forest and local 

 conditions in soil and climate, particularly with respect to hemlock and red 

 spruce* Assistance was given to a co-operative experiment studying pathological 

 conditions in yellow birch in Algonquin Park, carried on by the Science Service 

 of the Canada Department of Agriculture and the Regional Research Forester* An 

 investigation was initiated to study the usefulness of vcurious types of aerial 

 photographs for site inventory* 



Several instructional courses were given to groups of foresters, in 

 jwhich the Ontario approach to site was presented* 



Silvicultural Researoh in the Petawawa Management Unit 



The main object of the work, i^ich was initiated in eastern Algonquin 

 Park in 1951 > has been to study growth and regeneration of white and red pine and 

 thereby assist in solving some of the silviculturcLL problems of forest management 

 in the Petawawa Management Unit* 



