The ENCA simplifed model allows visualizing interactions between the various accounting modules. Slider (cursors) can be moved to see the combined effect of gains or losses of Adjusted Net Accessible Resource of biomass (red), water (blue) and ecosystem infrastructure functional services (green) on the Total Ecosystem Capability measured in Ecosystem Capability Units (ECU).
Then, Ecosystem Capital Degradation (in ECU) is decomposed by stress factors (excessive withdrawals, ecosystem destructing, excessive use of fertilizers, pollution, introduction of species…) and/or accountable economic sectors. In the following step degradation in ECU is converted to $ on the basis of restoration costs. It is an estimation of the depreciation that the economy should compensate. The total is the Domestic Consumption of Ecosystem Capital (DCEC). Ecosystem Capital Consumption can be the consequence of domestic ecosystems degradation as well as of imports of commodities produced in unsustainable conditions. In that case, ecosystem degradation embedded should be recorded as well (in ECU and in $) and added to calculate the Total (net) Ecological Debt (net meaning here that in case of ecosystem enhancement, credits should be allocated). On the ecosystem services side, a box shows the variaiton of the Intensity of Use of the three broad categories of services. In a subsequent step, the most important ecosystem services can be analyzed further on, mapped and valued.
[It is recommended to visualise and use the MSExcel spreadsheet with the model Full Screen, using with a zoom factor of 50 to 60%]