Land use - Case study from Bangladesh for technology targeting
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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!