摘要：Why are measurements of value important? Why focus on agriculture and food secto~? Examination of changing values of critical agriculture and food sector variables is necessary for assessing performance of public policies, agricultural education programs, and other inputs into the agri-food system. We suggest that a systems approach is a useful concept for analyzing agri-food policy and measuring the value of outputs of the system. In addition the systems approach is useful for assessing alternative strategies for: 1) increasing the value of agriculture and food sectors to Canadians and 2) increasing the contributions of the agri-food system to the Canadian economy.
