14 



: i \ .u NOKTII r.vKoi.i.NA ri.M . 



. >, i-i s. 



Wh uiilar soil ami moisture conditions prevail there is a 



definite a>> (' -pecies. Thi- ii-><-iation which is called a 



fort--: type remain-; practically constant until the natural conditions are 



tubed b\ !, lumbering, or other causes. The type is formed 



those specit-s which are best -uited to soil and moisture conditions, 

 but this does not necessarily mean that the natural mixture of species 

 would lw the most profitable one or the most desirable one economically 

 for that rite. 'Ill' rate f growth of the different species which form 

 a typ.- i- practically always the same in that type, and the yield of the 



n age is constant. 

 Table 1 shows the composition of the important commercial forest 



M of the ctia^tal plain of North Carolina and their relation to soil 

 and drainage. The great number of forest types in which loblolly pine 

 occurs is noteworthy as showing the virility and aggressiveness of this 

 species. 



TABLE I CHAACTEHISTIC FOREST TTPES or EASTERN NORTH CAROLINA ACCORDING TO SOIL 



AND DRAINAGE. 



