Human Appropriation of Net Primary Productivity: A critical component of the U.S. food-energy-water system

Authors: Suman Paudel*, Utah State University, Christopher Lant, Utah State University
Topics: Coupled Human and Natural Systems, Land Use and Land Cover Change
Keywords: Human appropriation of net primary productivity, Socio ecological, Conterminous, Agroecosystems, Biogeochemical
Session Type: Virtual Poster
Day: 4/8/2021
Start / End Time: 8:00 AM / 9:15 AM
Room: Virtual 51
Presentation File: Download

Human appropriation of net primary productivity (HANPP) was first studied by Vitousek and others in 1980s. HANPP, an assimilated socio ecological indicator, quantifies the impacts of human induced productivity change and harvest of ecological biomass flows and measures the intensity if land use by humans. This research is focused on quantifying and analyzing HANPP harvested, used, unused, above and below ground associated with the three primary means through which humans harvest net primary productivity (NPP), namely crop production, timber cutting and livestock grazing at the county level of the U.S. from the year 1997 to 2012. From these measures we calculate NPP and NPP ecological downscaled to 30 meters. This study will generate the first analysis of the geographic distribution of HANPP components, including HANPP harvest among counties in the conterminous U.S. revealing changes in HANPP harvest from 1997 to 2020 and compares HANPP harvest with other countries where HANPP had been studied. This research will also provide several insights to improve agroecosystems of the U.S. and will be able to produce an integrated picture of socio ecological condition in land system and also to analyze the change in biogeochemical environment. HANPP embodied in trade (eHANPP) could be used as a compelling measures for assessing land use impact due to consumption of biomass based products and for ecosystem management.

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