The land use ratio results (4.84 for the reference scenario and 4.35 for the alternative scenarios) imply that the production of pork using co-products can make available cropland for food crops production for direct human consumption.
Land development, hunting for sport or to protect crops, the pollution of seas and fresh waters, and the contamination of cropland have reduced many animal species, though strong efforts have been made to preserve those threatened with extinction, in such refuges where they still live.
Some 1.2 million acres of cropland have been damaged.
We also suggest that the production value of a multiple-use module – and thus the potential for conservation conflict – is a function of the yield gap of the cropland (potential for intensification) and the quantity and quality of non-cropland in the agricultural matrix that could potentially be cleared to make space for new cropland (potential for expansion).
"Extinction is forever," one sign reads; another sums up the dead end of "slash and burn" agriculture, in which trees are cut down and burned to make room for cattle and cropland.
Despite the differences, models used in this area, explicitly or implicitly, make assumptions on the elasticities of cropland yield and land supply with respect to crop prices.
Climate change and LULC change may result in shifts in water yield (precipitation less evapotranspiration), thereby making the cropland suitability layer and base yield estimates imperfect predictors of 2015 patterns in cropland productivity and base yields.
Young American farmers in particular, financed by an older generation of farmers diversifying away from expensive cropland in the U.S., are coming down to Bahia to make their fortune.
To make that much ethanol a full 40% of American cropland would need to be dedicated to corn, sending food prices through the roof.
In reality, the forested areas that would generate the lowest returns in cropland as of 2015, the areas where payments for avoided deforestation would make the most economic sense, are scattered across the globe.
