Enable JavaScript to interact with content and submit forms on Wolfram websites. Learn how

WOLFRAM SYSTEM MODELER

Human_Ecological_Footprint

Ecological footprint

Diagram

Wolfram Language

In[1]:=

SystemModel["SystemDynamics.WorldDynamics.World3.Human_Ecological_Footprint"]

Out[1]:=

Information

The ecological footprint is a concept developed by Mathis Wackernagel and his co-workers. It attempts to quantify the percentage of the planet's carrying capacity being used up by humanity at any given point in time. Wackernagel showed that, since the 1980s, humanity is spending more resources per time unit than the planet can regenerate in a sustainable fashion.

The human ecological footprint is measured in hectares per person.

Connectors (4)

	urban_ind_land	Type: MassInPort Description: Land occupied by human dwellings and industry
	arable_land	Type: MassInPort Description: Arable land
	ppoll_gen_rt	Type: MassInPort Description: Persistent pollution generation rate
	hef_human_ecological_footprint	Type: MassOutPort Description: Ecological footprint

Components (5)

	Arable_Land_In_Gha	Type: Gain Description: Output the product of a gain value with the input signal
	Urban_Land_In_Gha	Type: Gain Description: Output the product of a gain value with the input signal
	Absorption_Land_In_Gha	Type: Prod_2 Description: Product of two influencing factors
	Gha_Per_Unit_Of_Pollution	Type: Const Description: A constant factor
	HEF_Human_Ecological_Footprint	Type: HEF_Human_Ecological_Footprint Description: Human ecological footprint

Used in Examples (11)

	Scenario_1 SystemDynamics.WorldDynamics.World3 Original WORLD3 model
	Scenario_2 SystemDynamics.WorldDynamics.World3 More abundant non-recoverable natural resources
	Scenario_3 SystemDynamics.WorldDynamics.World3 More accessible non-recoverable natural resources and pollution control
	Scenario_4 SystemDynamics.WorldDynamics.World3 More accessible non-recoverable natural resources, pollution control, and land yield enhancement
	Scenario_5 SystemDynamics.WorldDynamics.World3 More accessible non-recoverable natural resources, pollution control, land yield enhancement, and erosion protection
	Scenario_6 SystemDynamics.WorldDynamics.World3 More accessible non-recoverable natural resources, pollution control, land yield enhancement, erosion protection, and resource efficiency
	Scenario_7 SystemDynamics.WorldDynamics.World3 More abundant non-recoverable natural resources and birth control
	Scenario_8 SystemDynamics.WorldDynamics.World3 More abundant non-recoverable natural resources, birth control, and stable industrial output
	Scenario_9 SystemDynamics.WorldDynamics.World3 Combining the measures of Scenarios #6 and #8
	Scenario_10 SystemDynamics.WorldDynamics.World3 Influencing the future 20 years earlier
	Scenario_11 SystemDynamics.WorldDynamics.World3 Influencing the future 10 years later