How to reduce the water footprint and improve food security in mountain           communities                  Hans Schrei...
Changes in Irrigation and Water Supply           Storage Reservoirs 1913-1998Year    1913       1956      1972          !998
Changes in Cropped Area, Alfalfa, and                                                    Fruit, Okanagan Basin 1976-2006  ...
Changes in Area/Farm 1981-2006                                                                            Okanagan Basin  ...
Million m3/year                                                                      Area in ha                       0   ...
Irrigation Water Requirements (m3/ha/year)                 12000                 10000m3 / ha / year                  8000...
m3/ha/y         Al                                                    10000                                               ...
Deviation from the Mean for Irrigation Water                                           Requirement for all Crops (m3/ha/y)...
Irrigation Factors to Consider•   Climate Change (wet vs. dry years)•   Differences due to Soil Texture•   Different Irrig...
Difference between Wet and Dry Years
Difference in m3/ha/y in Irrigation Water           Requirement by Soil Texture between                 Wet and Dry Years ...
The Value of Water for Different Crops
Summary•   70% of all water is allocated for agriculture•   Irrigation: 45% for forage crops, 41% for fruit, 7% for golf c...
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 in September 2010.

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

  1. 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. 2. Changes in Irrigation and Water Supply Storage Reservoirs 1913-1998Year 1913 1956 1972 !998
  3. 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. 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. 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. 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. 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. 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. 9. Irrigation Factors to Consider• Climate Change (wet vs. dry years)• Differences due to Soil Texture• Different Irrigation Systems• The Value of Water
  10. 10. Difference between Wet and Dry Years
  11. 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. 12. The Value of Water for Different Crops
  13. 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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