The Water Supply Stress Index Model (WaSSI) is a web-based tool that can be used to project the effects of land use change, climate change, and water withdrawals on river flows, water supply stress, and ecosystem productivity (i.e. carbon sequestration dynamics) across the conterminous United States and Mexico. As water yield and carbon sequestration are tightly coupled, WaSSI is useful for evaluating trade-offs among management strategies for these ecosystem services.

This paper discusses the competition for land resources and the issue of land-use change due to the rising demand for food and energy, specifically for the transport sector. The linkages between land, food, and energy become particularly complex within the context of climate change. This is not only because agriculture contributes to greenhouse gas emissions, but also because climate change itself can alter the productivity and availability of land.