management and use of water
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Management and Use of Water. . Present by : Yonatan Yahkoby . The key. To understanding water conservation. Is to know that the water requirements of plants can be calculated ......easily. To work out how much each type of plant requires. The thing to do?. There’s no need - PowerPoint PPT PresentationTRANSCRIPT
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Management and Use of Water. Management and Use of Water.
Present by : Yonatan Yahkoby Present by : Yonatan Yahkoby
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To understanding water conservationTo understanding water conservation
The keyThe key
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Is to know that the water requirements of Is to know that the water requirements of
plants can be calculated plants can be calculated ......easily......easily
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The thing to do?The thing to do?
To work out how much each type of To work out how much each type of plant requires.plant requires.
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Albert Einstein
There’s no need to be brilliant
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Quantities are expressed in mm.Quantities are expressed in mm.So that 1mm of water per sq. So that 1mm of water per sq. meter equals 1 liter of water.meter equals 1 liter of water.
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1mm per dunam1mm per dunamequals 1 cubic meter of water.equals 1 cubic meter of water.
OrOr
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In Tel Aviv for example the water needs In Tel Aviv for example the water needs of different plants are as follows.of different plants are as follows.
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Lawns=700mmLawns=700mm
Trees=250mmTrees=250mm
Shrubs=200mmShrubs=200mm
Water required in Tel AvivWater required in Tel AvivPER ANNUMPER ANNUM
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Water required in Tel avivWater required in Tel avivPER ANNUMPER ANNUM
Palms=400mmPalms=400mm
Perennials=300mmPerennials=300mm
Annuals=900mmAnnuals=900mm
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1+2=?1+2=?
What does this meanWhat does this meanin terms of QUANTITIES? in terms of QUANTITIES?
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Then if the area of lawn=100m2Then if the area of lawn=100m2(sg. meter)(sg. meter)??
If 1mm =1 liter per sq. meterIf 1mm =1 liter per sq. meter
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Then Then the lawn will needthe lawn will need
?
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Lawn RequiresLawn Requires700 mm per annum700 mm per annum
i.e 700 liters per sq. meteri.e 700 liters per sq. meterAs lawn area =100 sq. metersAs lawn area =100 sq. meters
SoSoQuantity required per annum?Quantity required per annum?
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700 X 100 = 70,000700 X 100 = 70,000oror
70 Cubic meters70 Cubic meters
Albert Einstein
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Let’s see how these principlesLet’s see how these principlescan be applied at the earliest stages Of can be applied at the earliest stages Of
the ......the ......DESIGN PROCESSDESIGN PROCESS
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AndAnd
For exampleFor example
Mr. LeviMr. LeviMr. CohenMr. Cohen
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Have bought identical plots Have bought identical plots measuring 1 dunam in Tel Aviv.measuring 1 dunam in Tel Aviv.
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LawnLawn FlowersFlowersShrubsShrubsFruit TreesFruit Trees
Mr. Cohen’s gardenMr. Cohen’s gardenSub-tropical Sub-tropical Trees.Trees.
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670 Cubic m. 670 Cubic m.
Plant typePlant type Annual Annual requirements mmrequirements mm Area Sq. metersArea Sq. meters Actual water Actual water
usage musage m33
LawnLawn 700700 750750 525525
Fruit TreesFruit Trees 600600 100100 6060
HedgeHedge 400400 100100 4040
FlowersFlowers 900900 5050 4545
TotalTotal 670670 1,0001,000 670670
How much water does Mr. Cohen use?How much water does Mr. Cohen use?
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ShrubsShrubsDecid. TreesDecid. TreesSeatingSeating FlowersFlowers
Mr. Levi’s gardenMr. Levi’s garden
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136 CUBIC m.136 CUBIC m.
How much water does Mr. Levi use?How much water does Mr. Levi use?
Plant TypePlant Type Annual Annual requirements mmrequirements mm Area Sq. metersArea Sq. meters Actual water Actual water
usage musage m33
Decid. treesDecid. trees 200200 500500 100100
ShrubsShrubs 100100 180180 1818
FlowersFlowers 900900 2020 1818
MulchMulch 00 250250 00
Seating areasSeating areas 00 5050 00
TotalTotal 136136 1,0001,000 136136
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And when it comes to And when it comes to paying the bills!paying the bills!
Mr. Cohen Mr. Levi
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Management and Use of Water.Management and Use of Water.
Present by : Yonatan Yahkoby Present by : Yonatan Yahkoby