How deep is the footprint? A 3D representation

Depletion of natural capital stocks and use of natural capital flows are the central issues in the sustainability debate. Differentiation of these two components, considering natural capital and its limits, is important for planning and management of land use. This paper offers insights into this is...

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Veröffentlicht in:Ecological modelling 2009-10, Vol.220 (20), p.2819-2823
Hauptverfasser: Niccolucci, V., Bastianoni, S., Tiezzi, E.B.P., Wackernagel, M., Marchettini, N.
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container_end_page 2823
container_issue 20
container_start_page 2819
container_title Ecological modelling
container_volume 220
creator Niccolucci, V.
Bastianoni, S.
Tiezzi, E.B.P.
Wackernagel, M.
Marchettini, N.
description Depletion of natural capital stocks and use of natural capital flows are the central issues in the sustainability debate. Differentiation of these two components, considering natural capital and its limits, is important for planning and management of land use. This paper offers insights into this issue and proposes a new perspective of the Ecological Footprint (EF) in three dimensions, considering not only its size but also its depth: according to this viewpoint the footprint is not an area but a volume, although maintaining the same value as the one in two dimensions. Use of annual flows provided by the Earth is represented by the footprint size, expressed in global hectares ( gha) and plotted in the ( x, y) plane. Footprint depth represents the demand for extra land to meet human needs through depletion of stocks of natural capital. It is plotted on the z-axis. It can be seen as the number of years necessary to regenerate resources liquidated in 1 year (and to absorb the respective wastes) or as the number of planets necessary to support the inhabitants of the planet Earth. The evolution of these two components in the last five decades is studied and discussed.
doi_str_mv 10.1016/j.ecolmodel.2009.07.018
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subjects Animal, plant and microbial ecology
Biocapacity
Biological and medical sciences
Depletion
Earth
Ecological Footprint
Ecology
Flows
Footprint depth
Footprint size
Footprints
Fundamental and applied biological sciences. Psychology
General aspects. Techniques
Marketing
Methods and techniques (sampling, tagging, trapping, modelling...)
Natural capital
Planets
Raw materials
Stocks
Sustainability
Three dimensional
title How deep is the footprint? A 3D representation
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