The officially published land cover map of 2006 was used for the calculation of emergy storage. This represents the accumulated assets of the land area.
Adaptive capacity: Data on government expenditures for 2006 were collected and represent the socioeconomic capacity to adapt to flooding. These include (1) the total annual budget for flood control (e.g. flood control projects along the river and coastal areas,regional drainage project, etc.) for 2006; and (2) the government employees’ salaries. The total length of dikes and levees, as well as the maintenance costs of pumping stations were also collected to measure the emergy content of flood control infrastructure.