
The
UNCCD
warns
that much of the earth’s
agricultural drylands have been harmed or are threatened
by desertification, affecting some 250 million people in
more than 110 countries with economic losses in the
range of US$42 billion per annum. The Convention defines
desertification as “land degradation in arid, semi-arid
and dry sub-humid areas resulting from various factors,
including climate variation and human activities”.
Desert
ification is like a skin disease
on the earth’s surface, erupting in patches that grow
and merge over time if it is not treated. The poor are
hurt most, because they depend on the land for a living.
When soils and vegetation are impoverished by
desertification, they lose their livelihoods.
The CGIAR has long recognized the
importance of research to improve the sustainability of
dryland agriculture, and has even created two
international centers entirely focused on the drylands:
ICRISAT
for the tropical latitudes, and
ICARDA
for the non-tropical zone. Other Centers also invest a
significant portion of their effort on the
desertification-prone drylands, especially
CIAT-TSBF,
CIMMYT,
ICRAF,
IFPRI,
IITA,
ILRI,
and
WARDA.