Table 1.
Estimation of arable land area for milk and meat production*.
Fig 1.
Global production versus recommended consumption.
Global food production (blue bars) are from FAO (2011) data and nutritional recommendations (orange bars) are based on Harvard University Healthy Eating Plate model. All data are displayed in dietary servings following the CFG [17] and USDA guidelines [23].
Table 2.
Land area (in million ha) using FAO data, assuming universal adoption of the Harvard Healthy Eating Plate (HHEP) nutritional guidelines for 7 billion people (today) and 9.8 billion people (projected for 2050) assuming that the yields of all crops continue to grow by 1%/year following historic trends.
Percentage change from current values is given for alternative scenarios in parentheses.
Table 3.
Greenhouse gas emissions (GT CO2e/yr) using FAO data, assuming universal adoption of the Harvard Healthy Eating Plate (HHEP) nutritional guidelines for 7 billion people (today) and 9.8 billion people (projected for 2050).
Percentage changes from the current values are given for both alternative scenarios in parentheses.
Fig 2.
Comparison of the amount of land used in million ha, with the adoption of HHEP diet for 7 billion people (today) and 9.8 billion people (in 2050): A) For protein servings from animal and plant sources and plant sources only (Upper panel). B) With the current situation of household food waste and with 10% household food waste (Lower Panel).
Table 4.
The annual percentage yield increases needed to produce the HHEP diet for the world population of 2050 without an increase in the amount of arable land.