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How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]
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How to reduce the water footprint and improve food security in mountain communities [Hans Schreier]

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How to reduce the water footprint and improve food security in mountain communities. Presented by Hans Schreier at the "Perth II: Global Change and the World's Mountains" conference in Perth, Scotland …

How to reduce the water footprint and improve food security in mountain communities. Presented by Hans Schreier at the "Perth II: Global Change and the World's Mountains" conference in Perth, Scotland in September 2010.

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  • 1. How to reduce the water footprint and improve food security in mountain communities Hans Schreier Faculty of Land & Food Systems University of British Columbia, Canada
  • 2. Changes in Irrigation and Water Supply Storage Reservoirs 1913-1998Year 1913 1956 1972 !998
  • 3. Changes in Cropped Area, Alfalfa, and Fruit, Okanagan Basin 1976-2006 Total Fruit Land in Crops Alfalfa 50000 Area in ha 40000 30000 20000 10000 0 6 1 6 1 6 1 6 1 97 1 98 1 98 1 99 1 99 2 00 2 00 Changes in Cow numbers in Okanagan Change in Total Hens & Chickens in Basin 1976-2006 Okanagan Basin 1976-2006 Total # of Chickens 1400000 Beef Cows Dairy Cows Bulls >1y 1200000 40000 1000000# of Cows 30000 800000 600000 20000 400000 10000 200000 0 0 76 81 86 91 96 01 06 76 81 86 91 96 01 06 19 19 19 19 19 20 20 19 19 19 19 19 20 20
  • 4. Changes in Area/Farm 1981-2006 Okanagan Basin 1981 2006 60 Average ha/Farm 50 49 40 38 30 20 12.6 10.4 10 0 Farm area/Farm Crop area/Farm Changes in Fruit & Vegetable Area/Farm Okanagan Basin 1981-2006 1981 2006 8 6.4 6 5.3ha/farm 4 2.1 1.4 1.6 2 0.5 0 Grapes/Farm Sweet Vegetable/Farm Cherries/Farm
  • 5. Million m3/year Area in ha 0 10 20 30 40 50 60 70 Ap p 1000 2000 3000 4000 5000 6000 7000 8000 9000 0 Ap le p s le Be s rr Be ie rr Ch s ie er Ch s rie er s rie s Fr Fr ui G t ui t ra G pe ra s pe Fo s Fo Ve rag ge e Ve rag e geG ta ta ol bl G bl f C es ol f C es ou ou rs rs es es T T Nu urf Nu urf Irrigated Area under Different Crops (ha) rs rs Irrigation Water Requirements (Million m3) er er ie ie s s
  • 6. Irrigation Water Requirements (m3/ha/year) 12000 10000m3 / ha / year 8000 6000 4000 2000 0 s B s es es s Fo s ur rf t f C le s eg age ui le ie rie pe Tu rs ri Fr rr pp ab se ra er r ou he A G et C N ol V G Irrigation Water requirement for Different Crops in the Okanagan Basin in 2006 Nurseri es Vegeta bl es 2% 3% Turf Appl es Appl es 2% 21% Berri es Gra pes 8% Berri es Cherri es Gol f 0% Other Frui t 8% Cherri es Fora ge 6% Gol f Other Frui t Gra pes 5% Turf Fora ge Nurseri es 45% Vegeta bl es
  • 7. m3/ha/y Al 10000 12000 2000 4000 6000 8000 0 Ap falf AsApr pl e a pa ico s ra ts Bl Bgus ue er be r y Ce rry rCo Cheea l ve C rry rG o ra rn Fo ss G rag in e si n Gg G ol r f Ne G rape ct as Nu ari s rs ne e Pe N ry a c uts hRa Pe e s sp Pl a rs So be um St urc rrie s r Swaw her s the Okanagan Basin in m3/ha/y (2006) ee ber r y t r ToCory Ve m n ge Tato t Irrigation Water Requirements for difference Crops in Avabl urf er es ag e
  • 8. Deviation from the Mean for Irrigation Water Requirement for all Crops (m3/ha/y) 5000 4000 TurfDeviation from mean m3/ha/ym Golf Nectarine 3000 Apricot Peach 2000 Blueberry Plum Cherry Nursery 1000 Vegetables Apples Forage Pear 0 Tomato Berry 1 Strawberry -1000 Nuts Asparagus Ginsing Raspberries -2000 Sourcherry Alfalfa Corn Grape SweetCorn -3000 Cereal Grass -4000
  • 9. Irrigation Factors to Consider• Climate Change (wet vs. dry years)• Differences due to Soil Texture• Different Irrigation Systems• The Value of Water
  • 10. Difference between Wet and Dry Years
  • 11. Difference in m3/ha/y in Irrigation Water Requirement by Soil Texture between Wet and Dry Years in m3/ha/y 1997-Wet 2003-Dry Difference 12000 10000m3/ha/y 8000 6000 4000 2000 0 S oam y y y y m d ea i c dy m d am am la C Cl a la an an H an oa an o a C C Lo Lo S S L rg L L vy y il t y il t O la S y S il t S
  • 12. The Value of Water for Different Crops
  • 13. Summary• 70% of all water is allocated for agriculture• Irrigation: 45% for forage crops, 41% for fruit, 7% for golf courses• Most Water Demanding: Golf, Apricots, Nectarines 8800-10000m3/ha• Least Water Demanding Crops: Grapes 4000m3/ha• Difference in water demand between sandy and clay soils 58%• Differences between drip & sprinkler irrigation: 41% (4000 vs 9700 m3/ha)• There is a 40% difference between wet and dry years• Fruit & vegetables are most sensitive to drought (requiring more water)• The 45 golf courses use 7% of the irrigation water and are the most inefficient users of water• As water becomes scarce selecting water efficient crops will become a viable conservation strategy.

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