stands and plantations to increase their value. Seed was collected periodically 

 from selected trees and stored under various conditions prior to seeding tests in 

 1963. 



In the spring of 1962, over 1300 basswood seedlings were planted in a hard- 

 wood stand that had been cut selectively in 1958. Their survival and growth will 

 be recorded and compared with that of natural hardwood seedlings of similar size 

 and age. 



White Spruce Regeneration Survey. In connection with an experimental 

 program aimed at combining deer management and timber management, a 

 regeneration survey was made of a cutover area in the Tweed Forest District to 

 determine the adequacy of the spruce component. 



Site Research 



Site research is the study of the productivity of land. Knowledge pertaining 

 to the relationships between soils, climates and crops are organized in a classifi- 

 cation system adaptable to various kinds of management of renewable natural 

 resources in Ontario. The forest is the major crop considered, but the classification 

 system also provides a biological basis for rating the potential of land for fish, 

 wildlife, agriculture and recreation. 



Research in the productivity of land is considered under three groupings: 

 Regional Site Research, Factorial Site Research, and Site Evaluation Research. 



REGIONAL SITE RESEARCH 



Regional Site Research is the study of the variations in the relationships 

 between soils, climates and forests from place to place and evaluates their signifi- 

 cance for management. Mapping of physiography on a broad basis is performed 

 to indicate the distribution of land patterns. 



Regional fieldwork has been continued in northwestern Ontario. Initial 

 mapping of landtype patterns was carried out on 2,500 square miles east of Lake 

 Nipigon, while previously mapped areas were checked on an additional 3,000 

 square miles west of the lake. A paper, "Glacial Features of the Canadian Lake- 

 head Area", was submitted for publication in The Canadian Geographer. 



The main emphasis of fieldwork in northwestern Ontario was upon the 

 collection of data pertaining to glacial features of the area. This data will form the 

 basis for a report similar to the published report of glacial history for northwestern 

 Ontario. 



FACTORIAL SITE RESEARCH 



Factorial Site Research is the study of individual site factors and their role in 

 productivity of common sites in Ontario. Soil nutrients and soil moisture are at 

 present under investigation. 



In soil nutrient research, a study on release of calcium from minerals is almost 

 finalized and techniques are being developed to determine the relative value of soil 

 parent materials as primary sources of nutrients. 



Facilities for soil moisture research were established and testing of equipment 

 has progressed. A paper, "The Water Balance of the University Forest", was pub- 

 lished in the technical report series of the Faculty of Forestry, University of 

 Toronto, whilst a Research Information Paper, "Water Potential and the 

 Movement of Soil Water", is on the press. 



258 



