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Global Food Security Support Analysis Data (GFSAD) at Nominal 1 km (GCAD) Derived from Remote Sensing in Support of Food Security in the Twenty-First Century: Current Achievements and Future Possibilities

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Relation http://oar.icrisat.org/9181/
 
Title Global Food Security Support Analysis Data (GFSAD) at Nominal 1 km (GCAD) Derived from Remote Sensing in Support of Food Security in the Twenty-First Century: Current Achievements and Future Possibilities
 
Creator Teluguntla, P
Thenkabail, P S
Xiong, J
Gumma, M K
Giri, C
Milesi, C
Ozdogan, M
Congalton, R G
Tilton, J
 
Subject Agriculture-Farming, Production, Technology, Economics
Climate change
 
Description The precise estimation of the global agricultural cropland—
extents, areas, geographic locations, crop types, cropping
intensities, and their watering methods (irrigated or rain-fed;
type of irrigation)—provides a critical scientific basis for the
development of water and food security policies (Thenkabail
et al., 2010, 2011, 2012). By year 2100, the global human population
is expected to grow to 10.4 billion under median fertility
variants or higher under constant or higher fertility
variants (Table 6.1) with over three-quarters living in developing
countries and in regions that already lack the capacity
to produce enough food. With current agricultural practices,
the increased demand for food and nutrition would require
about 2 billion hectares of additional cropland, about twice
the equivalent to the land area of the United States, and lead to
significant increases in greenhouse gas productions associated
with agricultural practices and activities (Tillman et al., 2011).
For example, during 1960–2010, world population more than
doubled from 3 to 7 billion. The nutritional demand of the
population also grew swiftly during this period from an average
of about 2000 calories per day per person in 1960 to nearly
3000 calories per day per person in 2010. The food demand of
increased population along with increased nutritional demand
during this period was met by the “green revolution,” which
more than tripled the food production, even though croplands
decreased from about 0.43 ha per capita to 0.26 ha per capita
(FAO, 2009). The increase in food production during the
green revolution was the result of factors such as: (1) expansion
of irrigated croplands, which had increased in 2000 from
130 Mha in the 1960s to between 278 Mha (Siebert et al., 2006)
and 467 Mha (Thenkabail et al., 2009a,b,c), with the larger estimate
due to consideration of cropping intensity; (2) increase in
yield and per capita production of food (e.g., cereal production
from 280 to 380 kg/person and meat from 22 to 34 kg/person
(McIntyre, 2008); (3) new cultivar types (e.g., hybrid varieties
of wheat and rice, biotechnology); and (4) modern agronomic
and crop management practices (e.g., fertilizers, herbicide,
pesticide applications)...
 
Publisher CRC Press
 
Contributor Thenkabail, P S
 
Date 2015-10
 
Type Book Section
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/9181/1/05_K22130_C006_Glo.pdf
Teluguntla, P and Thenkabail, P S and Xiong, J and Gumma, M K and Giri, C and Milesi, C and Ozdogan, M and Congalton, R G and Tilton, J (2015) Global Food Security Support Analysis Data (GFSAD) at Nominal 1 km (GCAD) Derived from Remote Sensing in Support of Food Security in the Twenty-First Century: Current Achievements and Future Possibilities. In: Land Resources Monitoring, Modeling, and Mapping with Remote Sensing. CRC Press, pp. 131-160. ISBN 9781482217957