2 3 土壌水分の基礎知識 - frontpage - kyushu university...
TRANSCRIPT
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8
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(1)
(2)
(3)
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W
V w
Ws
V d
Ws
Vs s
s
m Ga
s
m G
(1)
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5
41.73g100cc157.92g10524120.68g2.67g/cm31.00g/cm3
w
d
Ga
G
3g/cm16.1100
73.4192.157
3g/cm79.0100
73.4168.120
79.000.1
79.0
67.200.1
67.2
1.21.4 1.21.4 0.91.1 0.60.8
(1)
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Wm
Wa
W
Va
Vm
Vs
V
Vv
Ws
(2)
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7
41.73g100cc157.92g10524120.68g2.67g/cm31.00g/cm3
296.02957.0
100
67.2/73.4168.120/
372.03724.0
100
00.1/68.12092.157/
332.03319.0)3724.02957.0(000.1
704.07043.03319.03724.0
(2)
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Wm
Wa
W
Va
Vm
Vs
V
Vv
Ws
WmWs
VmV
(3)
d D /100
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gmo p
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g
g
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g
gm g
g
m
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g
gm g
g
m
g
p gp
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The SPAC (soil-plant-atmosphere continuum)
Yw() -0.1 MPa
Yw () -0.5 MPa
Yw () -0.6 MPa
Yw () -0.8 MPa
Yw () -95 MPa
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gm g
m
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0
J /kg
J/m3 = Nm/ m3 = N/m2 = Pa
J/N = Nm/ N = m
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1kPa1000Pam
N0001
m
Nm0001
m
J0001
m1000
1
J1
kg1
J1kg/J1
2333
atm.01.0101325Pa
1atm.Pa1000
101325Pa
1atm.Pa1000Pa1000kPa1
3m1000
1kg1
kg/J1
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..
N8.9kg1
cm10m10
1m
8.9
1
N8.9
Nm
N8.9
J1
kg1
J1kg/J1
0.110logcm)10pF(
kg/J1
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1J/kg1000Pa1kPa
0.01atm.0.102m10.2cm
pF 1.0
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pF
-1kPa -0.1m -10cm 1
-10kPa -1m -100cm 2
-100kPa -10m -1000cm 3
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1
2
7
5
6
3
4
6.3
4.2
3.0
1.5
7.0
5.5
pF
10m
158m
0.3m
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(1)
(2)
(3)
(4)
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http://www.decagon.com/echo/
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http://tal.agsci.usu.edu/~tal/soil.science/soil.physics/
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TDR
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orFDR
http://www.decagon.com/echo/
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Q-30cm
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R-30cm
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(30cm)
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Q-50cm
0
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3/14 5/3 6/22
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(50cm)
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-300 -200 -100 0 100
g
m
p
t
(cmH2O)
d(c
m)
d t g m p
(cm) (cm) (cm) (cm) (cm)
0 -280 0 -280
10 -170 -10 -160
20 -110 -20 -90
30 -75 -30 -45
40 -55 -40 -15
50 -50 -50 0 0
60 -50 -60 10
70 -50 -70 20
80 -50 -80 30
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..
(1)
1) 24
2)
3) (RAM)
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..
(2)
1)
2) (SMEP)
3)
4) (TRAM)
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140%
230%
320%
410%
SMEP
-
TRAM=0.7RAM
TRAM
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24
f c M L SMEP
cm % % %
1 0-10 35.1 21.7 41
2 10-20 33.8 22.5 28
3 20-30 33.5 21.9 20
4 30-40 31.6 20.2 11
5.0mm
TRAM
-
5.0mm
cm
1 0-10 13.4
2 10-20 11.3
3 20-30 11.6
4 30-40 11.4
cm
1 0-10 13.4
2 10-20 11.3
3 20-30 11.6
4 30-40 11.4
mm
RAM1={(fc 1M L 1)/100}*100=
RAM
mm
{(35.121.7)/100}*100
RAM
RAM3={(fc 3M L 3)/100}*100=
RAM4={(fc 4M L 4)/100}*100=
RAM2={(fc 2M L 2)/100}*100=
{(33.822.5)/100}*100{(33.521.9)/100}*100{(31.620.2)/100}*100
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5.0mm
cm
1 0-10 13.4
2 10-20 11.3
3 20-30 11.6
4 30-40 11.4
cm
1 0-10 13.4
2 10-20 11.3
3 20-30 11.6
4 30-40 11.4
mm
RAM1={(fc 1M L 1)/100}*100=
RAM
mm
{(35.121.7)/100}*100
RAM
RAM3={(fc 3M L 3)/100}*100=
RAM4={(fc 4M L 4)/100}*100=
RAM2={(fc 2M L 2)/100}*100=
{(33.822.5)/100}*100{(33.521.9)/100}*100{(31.620.2)/100}*100
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13.4mm
11.3mm
11.6mm
11.4mm
-
5.0mm
cm
1 0-10 RAM1/(SMEP/100) 32.7
2 10-20 RAM2/(SMEP/100) 40.4
3 20-30 RAM3/(SMEP/100) 58.0
4 30-40 RAM4/(SMEP/100) 103.6
cm
1 0-10 13.4(41/100 32.7 2 10-20 11.3(28/100 40.43 20-30 11.6(20/100 58.04 30-40 11.4(11/100 103.6
mm
mm
-
5.0mm
cm
1 0-10 RAM1/(SMEP/100) 32.7
2 10-20 RAM2/(SMEP/100) 40.4
3 20-30 RAM3/(SMEP/100) 58.0
4 30-40 RAM4/(SMEP/100) 103.6
cm
1 0-10 13.4(41/100 32.7 2 10-20 11.3(28/100 40.43 20-30 11.6(20/100 58.04 30-40 11.4(11/100 103.6
mm
mm
-
5.0mm
TRAM 32.75.06.5
6
1
63.018.0
18mm