SOIL
ATMOSPHERE
SOIL
WATER
SOIL
pH
SOIL
TEMPERATURE
INTERACTION
BETWEEN
ENVIRONMENTAL
FAC
T
ORS
Gas
in the soil
comes from
the outside
air
and
the
activity of
microbial
>
N2,
the
N
fixation
by microbes,
soil
N
cycle
processes
>
O2, the result of
photosynthesis
>
CO2, the result of
microbial
respiration
The pores
in the soil
mineral
or
organic
content
of
the
gas
and
water
Gas content
in the soil
determine the
type
of microbes:
> aerobic
microbial
>
anaerobic
microbial
>
facultative
microb
ial
Ground water
is essential
to
the life of
the soil
biot
a
G
round
water
is determine :
>
soil
humidity
and
>
availability
of water
for
soil
biota:
the solubility
of
minerals
for
plant
and microbe
’
s
nutrients
is high
Soil pH plays an important role in
avaibility
of
soil
nutrient to soil
microorganism
S
oil pH
acts
on the action of the enzyme that
produced
of
the soil microbial
On acid soils, nutrients are less available to soil biota
On neutral soils, sufficient
available nutrients for the
soil biota
Soil
temperature
influence :
> the
reaction
physiology
of biota
cell
> physico
-
chemical characteristics of
the environment
example:
soil
volume,
pressure,
oxidation
-
reduction
potential,
diffusion, viscosity,
structure,
groundwater,
surface
pressure
High
temperature, protein
denaturation
and
microbial
cell
wall
denaturation
Low
temperatures,
microbial activity
stopped
Interaction
Between Environment Factor
Ekpo,
M
.
A
.
,
et
al
.
2008
.
RATE
OF
BIODEGRADATION
OF
CRUDE
OIL
BY
MICROORGANISMS
ISOLATED
FROM
OIL
SLUDGE
ENVIRONMENT
.
African
Journal
of
Biotechnology
,
7
(
24
)
:
4495
-
4499
.
Kumar,
N
.
,
et
al
.
2010
.
ISOLATION
AND
SCREENING
OF
SOIL
ACTINOMYCETES
AS
SOURCE
OF
ANTIBIOTICS
ACTIVE
AGAINST
BACTERIA
.
International
Journal
of
Microbiology
Research,
2
(
2
)
:
12
-
16
.
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