Eat more pulses
Eat protein sources from lower down the food chain, like pulses and nuts. Su Taylor explains: ‘Grains, pulses and nuts have a much smaller carbon footprint than meat products by about a factor of three and are ideal as foods for human consumption.’

Choose seasonal
Buy seasonal fruit and vegetables. By eating produce grown locally, you'll not only be supporting the British food industry, you'll also reduce your food footprint by 57 percent, according to Vegetarian Society figures.
 
Try meat-free Mondays
Lowering your meat intake might mean taking the lead from Paul McCartney and his Meat Free Mondays campaign, and having one day a week where you eat no meat. Alternatively, try Riverford’s ‘meat and 10 veg’ philosophy, where the portion of meat is combined with a plentiful selection of veg. ‘We can still eat exciting food and eat half, or even quarter, as much meat as we already do,’ says Guy Watson.
Check out the sorce of this article at: Its a great read!http://www.theecologist.org/green_green_living/food_and_drink/1190709/can_becoming_a_vegetarian_help_save_the_planet.html