Il sito di Beano Medica Mais Eddy station 1 Eddy station 2 3 blocchi con 4 trattamenti Temperatura...
11
Il sito di Beano Medica Mais Eddy station 1 Eddy station 2 3 blocchi con 4 trattamenti C arbonio nel suolo 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 CT CNT GT GNT tC ha -1 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 0% 10% 20% 30% 40% 50% SW C(% v/v) Tensione (M P a) M edica Mais Temperatura media annua: 13.5°C Precipitazioni: 1200 mm
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Transcript of Il sito di Beano Medica Mais Eddy station 1 Eddy station 2 3 blocchi con 4 trattamenti Temperatura...
Il sito di Beano
Medica
Mais
Eddy station 1
Eddy station 2
3 blocchi con 4 trattamenti
Carbonio nel suolo
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
CT CNT GT GNT
tC h
a-1
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
0% 10% 20% 30% 40% 50%
SWC(%v/v)
Te
ns
ion
e (
MP
a)
Medica Mais
Temperatura media annua: 13.5°C
Precipitazioni: 1200 mm
Il sito di Beano: trattamenti
Mais arato
Mais non arato
Medica arato
Medica non arato
C4 soil
C4 soil
C4 soil
C4 soil
C4 soil
C3 grass
C3 grass
Grain/grass yield
(Mg ha-1)
72000 seeds/ha
December 15
apr-04 September 6
259 11.0±0.57
39 kg seed/ha
February 21
March 2 May 21 - 4.50±0.83
June 18 - 4.36±0.37July 17 - 3.47±0.35
August 17 - 3.13±0.26October 1 - 2.51±0.08
FT Me/CO.PRO.SEM.EL.- Tombolo, Italy
Planting date
Harvest date
Applied N
(kg N ha-1)
CT Ma/Decalb DKC6040
Site Crop/cultivar
Plants population
Tillage date
Andamento meteorologico 2007
-5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.00
1/0
1/0
7
01
/02
/07
01
/03
/07
01
/04
/07
01
/05
/07
01
/06
/07
01
/07
/07
01
/08
/07
01
/09
/07
01
/10
/07
01
/11
/07
01
/12
/07
01
/01
/08
Te
mp
era
tura
me
dia
(°C
)
0
10
20
30
40
50
60
70
Pio
gg
ia (
mm
)
Mais
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
01
/01
/07
01
/02
/07
01
/03
/07
01
/04
/07
01
/05
/07
01
/06
/07
01
/07
/07
01
/08
/07
01
/09
/07
01
/10
/07
01
/11
/07
01
/12
/07
01
/01
/08
Um
idit
à d
el s
uo
lo
0
10
20
30
40
50
60
70
Pio
gg
ia e
d ir
rig
azi
on
i (m
m)
Medica
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
01
/01
/07
01
/02
/07
01
/03
/07
01
/04
/07
01
/05
/07
01
/06
/07
01
/07
/07
01
/08
/07
01
/09
/07
01
/10
/07
01
/11
/07
01
/12
/07
01
/01
/08
Um
idit
à d
el s
uo
lo
0
10
20
30
40
50
60
70
80
90
100
Pio
gg
ia e
d ir
rig
azi
on
i (m
m)
Pioggia totale:
988 mm
Irrigazione mais:
104 mm
Irrigazione medica:
215 mm
Bilancio del carbonio
Products
Residues
GPP Reco
SR
Ra Rh
Eddy covariance
SR chambers
Root exclusion
Litter bags
Growth analysis
NPP = GPP – Ra
NEP = GPP – Reco =GPP – Ra – Rh =
NPP – Rh
NBP = NEP – Harvest
Accrescimento, concimazioni e produzioni
Mais: biomassa totale
27.2
16.2
11.4
8.0
0.92.4
25.8
17.314.7
9.6
1.1 3.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
134 145 164 177 199 242
t h
a-1
CNT CT
Medica: biomassa totale (senza raccolte)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
109 123 130 140 169 198 222 268 332doy
t h
a-1
Aboveground biomass Belowground biomass
Granella:
CT 11.0 t ha-1
CNT 11.2 t ha-1
Medica:
GT 18.0 t ha-1
GNT 17.2 t ha-1
10.011.012.013.014.015.016.017.018.0
250 300 350 400 450
N totale (kg ha-1)
Gra
ne
lla (
t h
a-1
)
Respirazione del suolo: metodo
Funzionamento del sistema: chiusura della camera e misurazione di C0 (A: 0-140 s); mixing (B: 23 s); misurazione della concentrazione (simboli aperti; C: 110 s) e calcolo della regressione (simboli chiusi)
C(t) = Cx – (Cx – C0) exp –a (t – t0)
dC/dt = a (Cx – C0) exp –a (t – t0)
C0 concentrazione CO2 alla chiusura
V volume del sistema
S area del collare
P0 pressione atmosferica alla chiusura
T0 temperatura alla chiusura
15.2730
0
TR
P
dt
dC
S
VSR
Respirazione del suolo: risultati
0
100
200
300
400
500
600
7000
1/1
2/0
6
15
/12
/06
29
/12
/06
12
/01
/07
26
/01
/07
09
/02
/07
23
/02
/07
09
/03
/07
23
/03
/07
06
/04
/07
20
/04
/07
04
/05
/07
18
/05
/07
01
/06
/07
15
/06
/07
29
/06
/07
13
/07
/07
27
/07
/07
10
/08
/07
24
/08
/07
07
/09
/07
21
/09
/07
05
/10
/07
19
/10
/07
02
/11
/07
16
/11
/07
30
/11
/07
gC
m-2
CT FT CNT
0
100
200
300
400
500
600
700
CT FT CNT
gC
m-2
Non aratura mais: + 0.93 tC ha-1 anno-1
Cambiamento uso suolo: - 0.12 tC ha-1 anno-1
NEE: confronto con analisi di crescita e bilancio energetico
MAIS
y = 1.07x + 0.19
R2 = 0.92
-2.0
2.0
6.0
10.0
14.0
18.0
-2.0 2.0 6.0 10.0 14.0 18.0
NPP analisi crescita (Mg C ha-1)
NP
P e
dd
y c
ov
ari
an
ce
(M
g C
ha
-1)
Medica
y = 0.92x + 0.03
R2 = 0.99
-2.0
2.0
6.0
10.0
14.0
18.0
-2.0 2.0 6.0 10.0 14.0 18.0
NPP analisi di crescita (Mg C ha-1)
NP
P e
dd
y c
ov
ari
an
ce
(M
g C
ha
-1)
MAIS
-400
-200
0
200
400
600
800
1000
1200
-400 -200 0 200 400 600 800 1000 1200
Rn - QG (W m-2)
H +
LE
(W
m-2
)
MEDICA
-400
-200
0
200
400
600
800
1000
1200
-400 -200 0 200 400 600 800 1000 1200
Rn - QG (W m-2)
H +
LE
(W
m-2
)
NEE: risultatiMAIS
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.000
1/1
2/0
6
15
/12
/06
29
/12
/06
12
/01
/07
26
/01
/07
09
/02
/07
23
/02
/07
09
/03
/07
23
/03
/07
06
/04
/07
20
/04
/07
04
/05
/07
18
/05
/07
01
/06
/07
15
/06
/07
29
/06
/07
13
/07
/07
27
/07
/07
10
/08
/07
24
/08
/07
07
/09
/07
21
/09
/07
05
/10
/07
19
/10
/07
02
/11
/07
16
/11
/07
30
/11
/07
gC
m-2
d-1
MEDICA
-20.00
-15.00
-10.00
-5.00
0.00
5.00
10.00
15.00
20.00
01
/12
/06
15
/12
/06
29
/12
/06
12
/01
/07
26
/01
/07
09
/02
/07
23
/02
/07
09
/03
/07
23
/03
/07
06
/04
/07
20
/04
/07
04
/05
/07
18
/05
/07
01
/06
/07
15
/06
/07
29
/06
/07
13
/07
/07
27
/07
/07
10
/08
/07
24
/08
/07
07
/09
/07
21
/09
/07
05
/10
/07
19
/10
/07
02
/11
/07
16
/11
/07
30
/11
/07
gC
m-2
d-1
NEE: bilancio
Residues= 4.6
NEP 5.6 tC ha-1 yr-1
Ra 3.3 Rh 5.9
Soil respiration9.2
TER 12.6GPP 18.2
HARVEST 8.3
NBP = -2.7tC ha-1 yr-1
Residues= 4.6
NEP 5.6 tC ha-1 yr-1
Ra 3.3 Rh 5.9
Soil respiration9.2
TER 12.6GPP 18.2
HARVEST 8.3
NBP = -2.7tC ha-1 yr-1
Residues= 5.7
NBP = -0.8tC ha-1 yr-1
NEP 4.2 tCha-1yr-1
Ra 4.0 Rh 5.7
Soil respiration9.7
TER 13.6GPP 17.8
HARVEST 5.1
Residues= 5.7
NBP = -0.8tC ha-1 yr-1
NEP 4.2 tCha-1yr-1
Ra 4.0 Rh 5.7
Soil respiration9.7
TER 13.6GPP 17.8
HARVEST 5.1
Altri gas serra
T NT T_RE NT_RE T NT T_RE NT_RE
N2O
flu
x m
g m
-2 d
ay-1
0
2
4
6
8
10
12
6th Jul 071st Aug 0715th Oct 0727th Nov 07
cropland grassland
(16.2 sd)
CT CTRECNT CNTRE FT FTREFNT FNTRE
T NT T_RE NT_RE T NT T_RE NT_RE
N2O
flu
x m
g m
-2 d
ay-1
0
1
2
3
4
5
cropland grassland
