Difference between revisions of "Nutrients/Policy issues"
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{{ComponentPolicyIssueTemplate | {{ComponentPolicyIssueTemplate | ||
|Description=Under baseline scenarios of IMAGE, N surpluses generally increase. For example, in the Rio+20 baseline scenario, the N surplus increases by 35% globally in the period 2002-2050 (Figure below). This is the result of decreasing trends in North America, Western Europe and Japan as a result of increasing nutrient use efficiency, and stabilisation in India. In all other regions, N surpluses increase, particularly in Sub-Saharan Africa and Southeastern Asia as a result of increasing fertilizer use to halt soil nutrient depletion (Figure below). The situation is similar for P, with large increases in developing countries. | |Description=Under baseline scenarios of IMAGE, N surpluses generally increase. For example, in the Rio+20 baseline scenario, the N surplus increases by 35% globally in the period 2002-2050 (Figure below). This is the result of decreasing trends in North America, Western Europe and Japan as a result of increasing nutrient use efficiency, and stabilisation in India. In all other regions, N surpluses increase, particularly in Sub-Saharan Africa and Southeastern Asia as a result of increasing fertilizer use to halt soil nutrient depletion (Figure below). The situation is similar for P, with large increases in developing countries. | ||
| − | |Example=Economic developments and policy interventions may modify individual terms in the soil nutrient budget (Formula 1), and the fate of nutrients in the environment. For example, agricultural demand (Component [[Agricultural economy]]) affects: | + | |Example=Economic developments and policy interventions may modify individual terms in the soil nutrient budget (Formula 1, [[Nutrients/Description|Model description part]]), and the fate of nutrients in the environment. For example, agricultural demand (Component [[Agricultural economy]]) affects: |
* production of leguminous crops (pulses and soybeans) and biological N fixation as a consequence; | * production of leguminous crops (pulses and soybeans) and biological N fixation as a consequence; | ||
* meat and milk production and thus animal manure production; | * meat and milk production and thus animal manure production; | ||
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* Changes in the distribution of total production between mixed and pastoral systems; | * Changes in the distribution of total production between mixed and pastoral systems; | ||
* Changing human diets leading to changing production volumes. | * Changing human diets leading to changing production volumes. | ||
| − | See also Policy | + | See also Policy interventions Table below |
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Revision as of 18:26, 20 May 2014
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