Agroecosystem greenhouse gas balance indicator: Carbon dioxide component
The Agri-Environmental Indicator Project aims to develop a core set of regionally-sensitive national indicators that build on and enhance the information base currently available on environmental conditions and trends related to primary agriculture in Canada. The Agroecosystem Greenhouse Gas Balance is one such indicator. Other indicators are being developed in relation to issues of soil quality, water quality, agroecosystem biodiversity, farm resource management and agricultural production efficiency. The objective of this study was to estimate the rate of change of carbon content in agricultural soils in Canada at the landscape level and to discuss potential and limitations of using a model to calculate carbon change across contrasting soil, climate, and cropping conditions encountered in Canada.