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Human appropriation of net primary production as an environmental indicator: implications for sustainable development
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Human appropriation of net primary production as an environmental indicator: implications for sustainable development
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Journal Article
Human appropriation of net primary production as an environmental indicator: implications for sustainable development
1997
Overview
The human appropriation of net primary production (NPP) significantly alters the energy flow of ecosystems. The NPP-appropriation, defined as the difference between the NPP of the hypothetical undisturbed vegetation and the amount of biomass currently available in ecological cycles, is investigated for the 99 political districts of Austria (1990). Calculations are based on data for land-use, forestry, yield, and climate. Total aboveground NPP of the actual vegetation was found to be 7% less than that of the potential natural vegetation. Additionally, 34% of potential production is harvested, resulting in a total reduction of ecologically available aboveground NPP of 41%. Since this could have significant ecological effects, e.g. on biodiversity, it is of potential interest for strategies of sustainable development, indicators for stresses on the environment, and the environmental effects of increased utilization of biomass.
