APPENDIX 307 



Distribution of diameter classes. In its strict sense, the location and 

 area of each stand of a given diameter class in the forest; in a general 

 sense, the per cent of area occupied by each diameter class in the 

 stand. 

 Diameter growth. See Increment. 



Diameter limit. The smallest (and occasionally largest) size to which 

 trees or logs are to be measured, cut, or used. The points to which the 

 hmit usually refers are stump, breast-height, or top. 

 Diameter tape. A tape from which the diameter may be read directly 



when it is placed around the tree. 

 Dibble, n. A tool for making holes for planting seeds or young trees. 



G., Setzpfahl. F., plantoir. 

 Dibble in, v. To plant seeds or young trees in holes made with a dibble. 

 Die hammer. See Marking hammer. 



Direct seeding. A method of establishing a forest artificially by sowing 

 seeds on the area to be forested. 



Broadcast seeding method is an application of direct seeding in which 

 seeds are sown over the entire area to be forested. 



Partial seeding may be done in strips, furrows or trenches, plats or 

 spots {see Seed spot). 



G., Saeen, Saat. F., ensemencement, semis. 

 Disengagement cutting or felling. See Intermediate cuttings. 

 District, v. To make a subdivision of a forest into units on map or groimd. 



Syn.: divide. 

 District, n. An administrative subdivision. See Subdivision. 

 Dominant. See Crown class. 

 Duff. See Forest floor. 

 Empirical 3rield table. See Yield table. 



Equalization period. The period during which it is planned to attain 

 approximately normal stock conditions. 

 G., Einrichtungszeitraum. 

 Estimate, v. To determine the approximate contents of trees or stands 



of timber. 

 Estimate, n. An approximate determination of size, contents, value or 

 anjrthing else; more specifically of the volume of a tree or stand. 

 Syn.: cruise. 

 Even-aged. AppUed to a stand in which only small age differences 

 appear, differences varying with the average age of stand. In young 



