Trees and grassland in agricultural landscapes help boost soil carbon storage

Top Crop Manager
December 14, 2015
By Top Crop Manager

Dec. 7, 2015 - Alberta soils could store significantly more carbon if trees and grassland are integrated into cropland areas, new research from University of Alberta reveals.

Scientists looked at the influence of shelterbelts, hedgerows and silvopastures to evaluate the role of trees and different land uses across the agricultural landscape in mitigating climate change, and to see which system is more conducive to carbon storage. They found that soils under trees stored 36 per cent more carbon.

"Trees had the greatest benefit in raising soil carbon levels in agroforestry systems where they were combined with neighbouring annual cropland subject to cultivation, while perennial grassland maintained soil carbon levels similar to that of the natural forest," said Edward Bork, a rangeland researcher.

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