The notion of food security has advanced from a focus on food availability to one including access. Recent efforts to incorporate changes in natural and human resources into measures of income and wealth suggest the potential for further improvements in integrated analysis of sustainable...

This paper builds on earlier studies of agricultural productivity by incorporating spatially referenced soil and climate data combined with high-resolution land-cover data. Econometric analysis of these data, along with panel data on agricultural inputs and outputs from 110 countries for...

This paper attempts to build on a conceptual analysis of both land tenure and food security to set various links in a dynamic framework that captures both the effects of access to resources on food security and the effects of food security on access to and use of resources. This framework is...

USDA's Economic Research Service estimates that about 33 percent of the developing world's people suffer from insufficient food intake. Growth in agricultural productivity is critical to improvements in food security. We will examine the impact of changes in acreage and fertilizer response on...