Horizon 



THE BEHAVIOUR OF NORWAY SPRUCE 149 



Table i 

 The soil profile at Rosenholm 



Ignition Depth 



loss Field Wilting of the Sample 



(% dry capacity capacity horizons depth 



weight) (vol. %) (vol. %) (cm) (cm) 



The most huniid 'pockets' in the profile in September 1955 were recorded 

 in the bottom of the mor layer and in horizon 3 , the fossil hinnus. The water 

 content in both these horizons is, to a certain extent, 'dead capital', pro- 

 bably due to a lack of living root tips which, by the way, were very actively 

 formed just in these humid volumes in the month of September 1955, 

 when root formation otherwise was very sparse and slow. 



Locahty 2, Kompedal plantation, dpt. 408. A sixty-year-old spruce stand 

 planted on previous field cultivated heath. The profile, therefore, is 

 'disturbed' and the numbering of the horizons will only apparently corres- 



c 



L 

 til 



a 

 E30 



9 



15- 



^ O 



APR. 



MAY 



JUNE JULY 



AUG. 



SEPT. 



Fig. 4. The march of water content during the summers 1953 and 1955 in different 

 horizons of the soil at Rosenholm. Numbers refer to horizons in Table i. 



