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Published: Friday 23 August, 2013

discount michael kors handbags discount michael kors handbags ´╗┐Advances in agriculture help environment

Advances in highyield agriculture have prevented the equivalent of 590 billion metric tonnes of carbon dioxide CO2 from escaping into the air, say two Stanford University Earth scientists.

The yield improvements reduced the need to convert forests to farmlan discount michael kors handbags d, a process that typically involves burning of trees and other plants, which generates CO2 and other greenhouse gases.

Researchers estimate that if not for increased yields, additional greenhouse gas emissions from clearing land for farming would have been equal to as much as a third of the world total output of greenhouse gases since the dawn of the Industrial Revolution in 1850.

results dispel the notion that modern intensive agriculture is inherently worse for the environment than the more way of doing things, said Stanford Earth Jennifer Burney, postdoctoral researcher with the Programme on Food Security and the E discount michael kors handbags nvironment at Stanford who led the study.

Burney said agriculture currently accounts for about 12 percent of humancaused greenhouse emissions.

time forest or shrub land is cleared for farming, the carbon that was tied up in the biomass is released and rapidly makes its way into the atmosphere, usually by being burned, she said, according to a Stanford Earth release.

intensification has lessened the pressure to clear land and reduced emissions by up to 13 billion tons of carbon dioxide discount michael kors handbags a year, added Burney. discount michael kors handbags