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Variable | Model driver group | Is_used_in | Description |
---|---|---|---|
Harvest efficiency | Technological change in agriculture and forestry | Forest management | Fraction of harvested wood used as product, the remainder being left as residues. Specified per biomass pool and forestry management type. |
Production system mix | Technological change in agriculture and forestry | Livestock systems Nutrients | Livestock production is distributed over two systems for dairy and beef production (intensive: mixed and industrial; extensive: pastoral grazing), and to three systems for pigs (backyard, intermediate, intensive) and poultry (backyard, boilers, laying hens) with specific intensities, rations and feed conversion ratios. |
Irrigation project efficiency | Technological change in agriculture and forestry | Ratio of quantity of irrigation water required by the crop (based on soil moisture deficits) to the quantity withdrawn from rivers, lakes, reservoirs or other sources. This parameter is given at country level. | |
Irrigation conveyance efficiency | Technological change in agriculture and forestry | Ratio of water supplied to the irrigated field to the quantity withdrawn from the water source, determining the quantity of water lost during transport. This parameter is defined at country level. | |
Animal productivity | Technological change in agriculture and forestry | Livestock systems | Effective production of livestock commodities per animal per year. |
Manure spreading fraction | Technological change in agriculture and forestry | Nutrients | Fraction of manure produced in staples that is spread on agricultural areas. |
Livestock rations | Technological change in agriculture and forestry | Livestock systems Nutrients | Determines the feed requirements per feed type (food crops; crop residues; grass and fodder; animal products; scavenging), specified per animal type and production system (extensive/intensive/backyard/intermediate/intensive/broiler/laying hens). |
Energy intensity parameters | Technological change in the energy system | Energy demand | Set of parameters determining the energy use per unit of economic activity (in absence of technical energy efficiency improvements). |
Learning rate | Technological change in the energy system | Energy supply | Determines the rate of technology development in learning equations. |
Energy efficiency technology | Technological change in the energy system | Energy demand | Model assumptions determining future development of energy efficiency. |
Technology development of energy conversion | Technological change in the energy system | Energy supply and demand Energy conversion | Learning curves and exogenous learning that determine technology development. |
Technology development of energy supply | Technological change in the energy system | Energy supply and demand Energy supply | Learning curves and exogenous learning that determine technology development. |
Trade policy | Trade regimes, tariffs and barriers | Agricultural economy | Assumed changes in market and non-market instruments that influence trade flows, subject to WTO rules and country and region regulation. |
Trade restriction | Trade regimes, tariffs and barriers | Energy supply | Trade tariffs and barriers limiting trade in energy carriers (in energy submodel). |