Lo
u
TABLE XV
Nitrogen (kg per ha) in Plant and Soil Material in Emsystems
Trees
Pinua Pinua Pinus Pinua Pinua Pinua Pinua Picea
Piem
Picea
Picea
Piem
sylveatria qlvwtria aylvwtria aylziwtria aylveatris nigra
nigra
abiea
abiea
abiea
abiw
abim
Location
England Scot,land England England Scotland England Scot,land England England England Sweden Sweden
Stand Number
Age of trees in years
Living plants
Tree layer
Fruit
Leaves
Branches
Trunks
Understorey plants
Dead plant material
Roote
On trees (branches)
Litter on ground (L, F and H)
Mineral soil
Removed in harvested trunks
Total removed in tree trunks
if clear felled
Depth of sampling in mineral
soil cm
Reference
3
4
5
6
23
33
47
55
< 1
115
89
}179
1 :
:
60
52
54
97
90
88
2
<1
95
40
189
81
-
184
-
1
-
-
44
27
163
1622
192
409
7
0
148
161
7308
-
-
-
66
97
238
249
70
-
-
-
A
B
C
A
10
46
207
229
87
-
-
274
6 619
19’3
428
50
C
11
12
48
20
-
52
}599
35
98
260
0
__
-
-
-
-
-
294
-
4 740
11
-
271
-
-
60
D
C
18
19
47
47
}226
}5n
105
132
0
0
-
-
360
436
6596
7 781
205
129
310
261
70
70
C
C
20
21
52
58
109
63
t Includes Ao + A1 soil horizon.
A. Ovington, 1959a. b
D. Wright and Will, 1958
B. Ovington and Madgwick, 1959a
E. Tamm and Carbonnier, 1961
C. Ovington, 1954a; 1955; 1956a, b, c ; 1957a, b; 1958a, b, C ; 1 ~ 5 %
F. Heilman, 1961
m G. Ovington and Madgwick, 1959c H. Miller, in manuscript
I. Greenland and Kowal, 1960
7 J. Ogawa et al., 1961.
I