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PERN  February 2007

PERN February 2007

Subject:

Human Appropriation of Net Primary Productivity (HANPP) data

From:

Alex de Sherbinin <[log in to unmask]>

Reply-To:

Alex de Sherbinin <[log in to unmask]>

Date:

Fri, 16 Feb 2007 12:37:05 -0500

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (65 lines)

The global patterns in Human Appropriation of Net Primary Productivity
(HANPP) represents a digital map of human appropriation of net primary
productivity measured in units of elemental carbon on a one-quarter degree
global grid.  Net primary productivity (NPP), the net amount of solar energy
converted to plant organic matter through photosynthesis, can be measured in
units of elemental carbon and represents the primary food energy source for
the world's ecosystems. Humans appropriate net primary productivity through
the consumption of food, paper, wood and fiber, which alters the composition
of the atmosphere, levels of biodiversity, energy flows within food webs and
the provision of important ecosystem services. 

To download the data visit:
http://sedac.ciesin.columbia.edu/es/hanpp.html


Additional Information

In a June 2004 issue of the journal Nature a team of researchers from NASA's
Goddard Space Flight Center, the University of Maryland, the World Wildlife
Fund, Stanford University, the National Center for Atmospheric Research and
Bowie State University published an analysis of global patterns in human
consumption of net primary productivity (NPP). NPP-the net amount of solar
energy converted to plant organic matter through photosynthesis-can be
measured in units of elemental carbon and represents the primary food energy
source for the world's ecosystems. Human appropriation of net primary
productivity (HANPP), through the consumption of food, paper, wood and
fiber, alters the composition of the atmosphere, levels of biodiversity,
energy flows within food webs and the provision of important ecosystem
services. A more detailed paper presenting similar results was published by
the NASA lead researchers (Imhoff and Bounoua) in a November 2006 article in
the Journal of Geophysical Research (see citation section below).

This Web site provides access to the spatial data sets utilized in the
Nature and JGR articles: the original satellite-derived quarter-degree NPP
grid; the intermediate model of human appropriation of NPP (low and high
variants of HANPP were also produced but are not distributed here); and the
HANPP as a percent of NPP. The data are available in ArcINFO GRID and
Compressed GeoTIFF formats. In addition, a downloadable Excel format file
provides tabular data by country 
on total estimated consumption of NPP in the form of food, paper, wood, and
fiber. 

References

    *  Imhoff, Marc L., Lahouari Bounoua, Taylor Ricketts, Colby Loucks,
Robert Harriss, and William T. Lawrence. 2004. Global patterns in human
consumption of net primary production. Nature, 429, 24 June 2004: 870-873.
    * Imhoff, Marc L., and Lahouari Bounoua. 2006. Exploring global patterns
of net primary production carbon supply and demand using satellite
observations and statistical data, Journal of Geophysical Research, 111,
D22S12, doi:10.1029/2006JD007377.


Alexander de Sherbinin
Coordinator, Population-Environment Research Network (PERN), and
Senior Staff Associate for Research
CIESIN, Columbia University
P.O. Box 1000, Palisades, NY 10964 USA
Tel. +1-845-365-8936, Fax +1-845-365-8922
CIESIN: www.ciesin.columbia.edu
Earth Institute: www.earth.columbia.edu
PERN: www.populationenvironmentresearch.org 


Population-Environment Research Network Discussion List:  Send messages to [log in to unmask] or click "Reply All" to an existing message to post to this list. If you have questions, concerns, or wish to be removed from this list, please e-mail the coordinator at [log in to unmask]

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