Nutrients/Policy issues: Difference between revisions
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|Description=Under the baseline scenario of the [[Roads from Rio+20 (2012) project|Rio+20 study]], N surpluses increase by 35% globally. This is the result of decreasing trends in North America, western Europe and Japan, and stabilisation in India. In all other regions, N surpluses increase, particularly in Sub-Saharan Africa and Southeast Asia (see figure below). The situation is similar for phosphorus, with large increases in developing countries. | |Description=Under the baseline scenario of the [[Roads from Rio+20 (2012) project|Rio+20 study]], N surpluses increase by 35% globally. This is the result of decreasing trends in North America, western Europe and Japan, and stabilisation in India. In all other regions, N surpluses increase, particularly in Sub-Saharan Africa and Southeast Asia (see figure below). The situation is similar for phosphorus, with large increases in developing countries. | ||
Economic developments and policy interventions may modify individual terms in the soil nutrient budget ([[ | Economic developments and policy interventions may modify individual terms in the soil nutrient budget (formula 1, [[Nutrient balances/Introduction]]), and the fate of nutrients in the environment. For example, agricultural demand ([[Agricultural economy and forestry]]) 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. | ||
}} | }} | ||
Revision as of 11:45, 12 February 2014
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