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Phd topic presentation

Napels, IT, september 2012

Tina Jaklič

on 25 November 2012

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Transcript of Phd topic presentation

So? The model Incorporation of integrative emergy approach University of Ljubljana,
Biotechnical Faculty tina.jaklic@bf.uni-lj.si into agricultural production planning The topic The hypotheses What's the contribution What ? Why ? How? milk production
and allocation
at a national level The System Slovenia / "Slo-land" 8 types of dairy farms KMG1............. KMG2 KMG3 KMG4 Decision-making : neoclassical economic principles and assumptions: max utility = max profit, monetary flows
does not consider biophysical constraints distances the economic system from the natural system Agriculture a direct user of natural environment Decisions in agriculture: short-term (ST) and long-term (LT) goals financial welfare and motivation to continue farming (ST) and
(eco)system requirements for its sustainable and efficient functioning (LT) Problem definition The purpose and the goal the purpose to stress the importance of and to propose a more holistic approach to evaluation of agricultural production and planning on a national level. the goal to develop a modular tool which simultaneously considers
economic and natural system as two main stakeholders in agricultural activity, each with their own objectives, roles and perspectives. the need for anthropocentric and ecocentric evaluation of the system Theory of value Research area Principles Flows economics, environmental economics ecological economics neoclassical biophysical monetary energy and matter Biophysical Motivation Tina Jaklic Who? Phd candidate About me economics? environment? Driving force Value Subject to Approach homo-economicus energy flows production costs, utility work of nature market dynamics thermodynamic laws antropocentric - user side evaluation ecocentric - donor side evaluation Standard / Neoclassical THANK
YOU 1) Emergy analysis links neoclassical and biophysical understanding of value and so enables qualitative impact assessment of agricultural activities.

2) The model enables a simulation of different economic situations and the analysis of their impact on the agricultural system as a whole.

3) The results of the integrated model provide valuable information to support environmental and agricultural policy planning. The structure of the model
and methodology used 1. Economic module 2. Emergy module 3. Synthesis module Economic module antropocentric evaluation of 8 farm types Gross margin
Output/unit (productivity)
% subsidies
... FARM LEVEL NATIONAL LEVEL optimal structure(FT)
of the system single criteria:
max aggregated GM/income Linear programming Emergy module FARM LEVEL NATIONAL LEVEL ecocentric evaluation
of 8 farm types Emergy Indices:
output UEVs
... Emergy diagrams and tables optimal structure (FT)
of the system single criteria:
good "emergy" performance Linear programming e.g. max empower Emergy analysis Economic analysis Synthesis module NATIONAL LEVEL Farmers, natural system and national economy high income, sufficient production, sustainability,... Stakeholders Different views, different objectives: Multiple- criteria optimisation of the system Goal programming solving multiple-criteria problems
ideal solution: all objectives (targets) are reached

optimal solution: min deviations from the desired targets Goal programming two main sets of objectives economic performance system performance an optimal compromising solution that defines structure of the system (farm types, domestic milk production, export, import) at a national level based on economic and emergy based criteria (simultaneously) ...and why
am I here? milk for export imported milk D S domestically produced milk + - (all FT exc. 1 &2) (FT 7,8 ; FT 4) land availability terrain water fuel electricity seeds pesticides fertilisers mechanisation labour services natural resources economic inputs sun rain 8 farm types 1. small subsistance farm 2. small half-subsistance farm 3. extensive ecological farm 4. intensive ecological farm 5. normal conventional farm 6. intensive conventional farm(1) 7. intensive conventional farm(2) 8. agricultural enterprise the attempt to incorporate emergy analysis into economic optimisation / decision-making model new and interesting approach: more holistic understanding of various activities at the junction of human and nature. for researchers in agricultural, environmental and ecological economics and indirectly for agro-environmental policy makers Results: simulation tool - Insight into differences between ACE in ECE

- New dimension of system objectives and constraints is added

- Providing new information for decision-makers and policy planners. questions
advice Emergy module economic analysis Min a = h (n, p)
where: fq(x1, x2,…xn) + nq -pq = bq, q= 1,…...,Q
x = F
nq, pq >= 0 weighted goal programming (WGP) Chair for agricultural economics,
policy and law emergy analysis The theory of value subsidies not really possible in our case
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