Table 17.1. Chemical composition of soil solution at Montseny from low-tension Iysimeters' and at Prades from centrifugation extracts b
•
Arithmetic mean
and standard deviation (in parentheses) for all variables except pH. Geometric mean is shown for the latte{
Cond. d
pH
Alkal. e
DOC e
Ca 2
+
Mg2+
Na+
K+
NH4+
ClN0
3 -
solMontseny
20cm
75
5.66
65
417
205
142
35
175
1.7
394
(23)
(15)
(123)
(67)
(39)
(27)
(132)
(4.4)
(105)
40cm
94
5.62
60
491
248
176
35
205
6.0
539
(55)
(11)
(291)
(147)
(89)
(39)
(172)
(19.4)
(389)
Prades
0-2.5 cm
433
6.98
963
20.2
3733
913
227
634
121
1134
319
1341
(203)
(910)
(14.6)
(2286)
(598)
(118)
(271)
(104)
(1031)
(657)
(1055)
2.5-15 cm
339
6.05
194
16.3
2325
633
264
297
63
1333
122
1131
(216)
(364)
(17.2)
(1752)
(424)
(158)
(161)
(80)
(889)
(390)
(742)
15-30 cm
212
6.19
169
7.2
1323
342
244
174
48
845
54
722
(117)
(132)
(5.0)
(1175)
(272)
(175)
(124)
(91)
(580)
(115)
(510)
• Data from Avila et al. (1995), from December 1984 to June 1986.
b
Data from Prades from 32 pits sampled on four occasions (November and December 1993, April and September 1994).
e
Alkalinity and ion concentrations in Ileq L- 1
•
Dissolved organic carbon, in mmol L- 1
•
Dashes indicate not analyzed.
d
Conductivity in IlS cm- 1
at 20°C.
e
Total alkalinity at Montseny, bicarbonate alkalinity at Prades.
en
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