All management options could be combined with three fertilizer levels (F0 ¼ zero
fertilizer; F1 ¼ farmers’ practice; F2 ¼ high input). Labor data were based on the
expert opinions of researchers conducting field experiments related to the Uplands
Project in Chieng Khoi.
As with the LUCIA standalone version (Sect. 10.2), simulations were run for
25 years. The same data for parameterization and calibration were used with both
approaches.
Land cover, management
Yields
MP-MAS
LUCIA
TDT
TDT
Maize F0
Maize F1
Maize F2
Cassava F0
Paddy F0
Paddy F1
Paddy F2
Fallow
Mango F2
Forest
12
10
8
6
4
2
0
_
Lake
Cassava F1
Cassava F2
Intercrop F0
Intercrop F1
Intercrop F2
<
_ >
W
ra
ppe r
Fig. 10.22 Data exchange process in the coupled model system using TDT (Typed Data Transfer
protocol)
Table 10.10 Labor costs of the scenarios in the coupled model
Scenario
Labor use
[h ha
À1
]
Explanation
(A) Baseline: Current
practice
207
Fallow vegetation or crop residues are slashed and burned in
the dry season prior to plowing and sowing
(B) Zero tillage
without a cover
crop
230
Fallow vegetation is not burned but mulched, maize is
planted in untilled soil
(C) Zero tillage with a
cover crop
275
Same as (B), but a perennial legume is inter-planted with
maize to reduce erosion, suppress weeds and fix nitrogen
(D) Cover crop
plowed under
298
Same as (C), but the cover crop is plowed into the soil to
improve soil fertility and ease planting
10 Integrated Modeling of Agricultural Systems in Mountainous Areas
421
fertilizer; F1 ¼ farmers’ practice; F2 ¼ high input). Labor data were based on the
expert opinions of researchers conducting field experiments related to the Uplands
Project in Chieng Khoi.
As with the LUCIA standalone version (Sect. 10.2), simulations were run for
25 years. The same data for parameterization and calibration were used with both
approaches.
Land cover, management
Yields
MP-MAS
LUCIA
TDT
TDT
Maize F0
Maize F1
Maize F2
Cassava F0
Paddy F0
Paddy F1
Paddy F2
Fallow
Mango F2
Forest
12
10
8
6
4
2
0
_
Lake
Cassava F1
Cassava F2
Intercrop F0
Intercrop F1
Intercrop F2
<
_ >
W
ra
ppe r
Fig. 10.22 Data exchange process in the coupled model system using TDT (Typed Data Transfer
protocol)
Table 10.10 Labor costs of the scenarios in the coupled model
Scenario
Labor use
[h ha
À1
]
Explanation
(A) Baseline: Current
practice
207
Fallow vegetation or crop residues are slashed and burned in
the dry season prior to plowing and sowing
(B) Zero tillage
without a cover
crop
230
Fallow vegetation is not burned but mulched, maize is
planted in untilled soil
(C) Zero tillage with a
cover crop
275
Same as (B), but a perennial legume is inter-planted with
maize to reduce erosion, suppress weeds and fix nitrogen
(D) Cover crop
plowed under
298
Same as (C), but the cover crop is plowed into the soil to
improve soil fertility and ease planting
10 Integrated Modeling of Agricultural Systems in Mountainous Areas
421