land use - case study from bangladesh for technology targeting
DESCRIPTION
Remote sensing –Beyond images Mexico 14-15 December 2013 The workshop was organized by CIMMYT Global Conservation Agriculture Program (GCAP) and funded by the Bill & Melinda Gates Foundation (BMGF), the Mexican Secretariat of Agriculture, Livestock, Rural Development, Fisheries and Food (SAGARPA), the International Maize and Wheat Improvement Center (CIMMYT), CGIAR Research Program on Maize, the Cereal System Initiative for South Asia (CSISA) and the Sustainable Modernization of the Traditional Agriculture (MasAgro)TRANSCRIPT
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Land use - Case study from Bangladesh for technology targeting
Urs SchulthessTimothy J. KrupnikAndrew McDonald
And many other partners
Workshop: Remote Sensing – Beyond Images
Dec 14 & 15, 2013Mexico City, Mexico
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Rising food prices
Animal
Courtesy M. Banziger
Non- staple foods
Non-Food: education – health – housing – risk management
Staples: rice & wheat
Before 2008
Fish+ Meat
Effect of a 50% food price increase on household income use (Bouis 2011)After 2008
Non-staple foods
Fish + Meat
Staples: rice & wheat
Non-Food: education – health – housing – risk management
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Bangladesh: Hot, flat and crowded (borrowing from Freidman 2008)
150.5 million people (WB 2011)
75% rural (Huq et al.
2008)
Climate change vulnerable (Rawlani et al. 2011) Low-intensity
cropping in South
Extreme poverty (UNDP 2011)
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• Irrigation facilities least developed in the South.
• Shallow aquifers are
usually saline.
• Surface water alternative?
Abundant water, but little irrigation in the South
Deep and shallow
tube wells
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Surface water irrigation to hedge risk
The Axial Flow Pump:
Up to 50% more fuel efficient for low-lift pumping
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Surface water irrigation to hedge risk• Location and quantification of low intensity dry season
land (Following Maas and Rajan 2008)
• < 40% ground cover: Approximately 180,000 ha• After surface water buffering: 83,000 ha• Surface water salinity sampling stations (dots)
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Krigged surface water salinity: 90th percentile Weeks 1-2
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Krigged surface water salinity: 90th percentile Weeks 5-6
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Krigged surface water salinity: 90th percentile Weeks 9-10
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Krigged surface water salinity: 90th percentile Weeks 13-14
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Identification of water ways
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Identification of water ways
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Identification of water ways
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Identification of water ways
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Open research topics
• Perennial water way detection – Landsat too coarse
• Soil moisture status in critical period before planting of winter crop
• Irrigation scheduling– Contribution from ground water table– Crop water use estimation
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Thank you!