(as seen on the SDI-Africa listserv.....great job Stan and IFPRI folks! (Jawoo, etc..)
Chris
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http://insights.ifpri.info/2012/06/mapping-african-agriculture/Mapping African agriculture
Data
of all kinds are notoriously scarce for Sub-Saharan Africa, and
geospatial data—that is, maps—on agriculture, poverty, and the
environment are no exception. The IFPRI researchers in HarvestChoice, a
joint program with the University of Minnesota, have therefore been busy
generating new spatial data, harmonizing them with data compiled from a
range of other sources, and making the entire collection available at a
single website (
www.harvestchoice.org), along with tools for exploring the information in creative ways.
In
addition to being scarce, data to support agricultural policy and
investment decisions in Sub-Saharan Africa have typically been too
“coarse”—available only on a national or regional scale. “But there’s
actually lots of variation within countries in terms of the
environment, farming practices, and market opportunities,” says Stanley
Wood, the leader of the HarvestChoice team at IFPRI. Rainfall, soil
fertility, and access to infrastructure, for example, may be quite
different for communities separated by just a few kilometers. “At a
finer scale,” he says, “you pick up more of the real-world variability
that farmers and would-be service providers face.”
To better reveal the spatial distribution and patterns of farming in Sub-Saharan Africa, HarvestChoice created MAPPR (
http://www.harvestchoice.org/mappr
), a tool for interacting with the core collection of detailed,
high-resolution maps covering all aspects of agricultural production.
MAPPR divides the continent into 10-kilometer by 10-kilometer squares,
allowing users to home in on any one of 300,000 squares or to summarize
indicator values for all squares in a specified watershed,
agroecological zone, or market area. There are currently map layers for
more than 100 indicators, including population density, poverty,
rainfall, crop harvested areas, and travel time to market. MAPPR allows
users to combine indicators from multiple layers to produce customized
maps, charts, and tables.
Using MAPPR, a policymaker can identify
regions of a country with high concentrations of both poverty and
cropland, or an investor thinking about building a food-processing plant
can search for locations that combine production of sufficient
quantities of a particular crop with good access to markets.
Besides
maps and mapping tools, the HarvestChoice website provides datasets,
working papers, presentations, and spatial and economic models—all at no
cost. “We’ve built a hub of data and compatible tools,” says Wood, “so
that practitioners everywhere can leverage our resources to better
inform their own policy and investment
priority setting and decisionmaking.”