Soil Fauna Activities in Agricultural Greek Landscapes
89
Widespread soil profiles A paddy soil profile
Soil humus
In Greek landscapes
components
,
Waterlogged paddy soil,
A-B horizon loam,
C horizon sandy loam ,
Zhe Jiang Province,
Tai-Hu region China
Qi X, Yan-chun L, YuanChang L, Hong-Guan in,
China the Tai-Hu region
Shanghai, Sci. Tech
Publisher, Shanghai
Soil pH OM N CEC
hori (H2O) (%) (%) me/
zon
100g
A 5.8 4.7 0.24 12.9
P 6.4 4.3 0.23 16.8
WL 7.7 1.1 0.05 12.5
Cg 7.8
-
-
8.6
Anthraquatic paddy soil
under long term wheat
rotation with a clay-humus
in water retaining by
wetting, ploughing, harrowing, and 3 important
processes shaped soil:
(a) (Fe3 + /Fe2 + oxidationreduction
(b) white bleaching,
(c) formation of Fe-humic
coatings (Fe2 + to Fe3 +
oxidation
A
B
A: Iron oxide encrusted root
pseudo-gley, humus horizon
(Ah)
B: humus infiltrated sub soil, very
likely formed under soil fauna
influence
Babel U (1975) Micromorphology
of soil organic matter In: Soil components Vol 1, editor Gieseking,
chapter7, 378 pages
Iron oxide encrusted root, humus
section (bright field, natural size
50 µm). Colourless regions
surrounding the iron crusts are
quartz grains (30 µm)
Fig. 1 In Greece widespread soil profiles compared with a paddy soil profile, a plant material,
intermixed thin section of an A h and of a loess soil B horizon with infiltrated organic material l,
inter alia through soil faunal activities, illustrating the process memorizing potential of soil profiles