Agriculture Reference
In-Depth Information
(OrgLoc) and organic, local and demitarian (OrgLocDem) scenarios. The 2006 situation is primarily based on agricultural statistics (Agreste,
2007), with a few items calculated as explained in the text and summarised in the “remarks” column. The OrgLoc and OrgLocDem scenarios
are calculated starting from the current situation and reallocating land use and livestock numbers in order to meet the following constraints:
no use of synthetic fertilisers (organic fertilisation only), no import of feed (self-sufficiency in animal nutrition), no import of animal products
(self-sufficiency in supplying animal products for local human consumption). Cereal production is calculated from the yield/fertilisation
relationship observed for the Seine basin départements in the current situation. Cereal production in excess of livestock and human
requirements is exported. Nitrate concentration in infiltrating sub-root water is estimated from the difference between fertilisation and yield
in arable land, taking into account an infiltration rate of 300mmyr
−1
.
2006
Org-Loc
OrgLocDem
Main characteristics of the territory
total area
km
2
92,381
Agreste (2007) (all
déptmts)
92,381
92,381
unchanged
agricultural area
1000 ha
5119
Agreste (2007)
5,119
5,119
unchanged
population density
hab km
−2
183
INSEE (2007)
183
183
unchanged
per capita protein consumption
kgNcap
−1
yr
−1
7
FAOstat (2012)
7
7
unchanged
% animal protein in diet
%
65
FAOstat (2012)
65
40
unchanged for OrgLoc, reduced to
40% for OrgLocDem
Livestock farming
livestock density
LU km
−2
18
Agreste (2007)
49
30
adjusted to meet population require-
ments
meat and milk production
ktonNyr
−1
15
Agreste (2007)
77
48
assuming yield of 17% (mean value
for France)
manure
production
ktonNyr
−1
138
85 kgNLU
−1
yr
−1
387
238
85 kgNLU
−1
yr
−1
feed consumption
ktonNyr
−1
153
production + manure
464
286
production + manure
