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ISRIC
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(ISRIC)
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Blue water flow
Soil water
Groundwater
Green water
Rainfall
Evaporation
Interception
Storm runoff
Transpiration
Groundwater recharge
rain100%
fore
st/w
oodl
ands
17%
othe
r 6%
crop
s 4%
gras
slan
ds 31%
arid la
nd 5
%
irrigation 1.5%return flow 0.7%
accessible base flow 11%
storm runoff 27 %
; ,
2025 , 28 ,1
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Page 5/8
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Tana ( 8), , :
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Masinga Kindaruma Kiambere Kamburu Gitaru
200
180
160
140
120
100
80
60
40
20
0
x ThousandGigajoule
1989 1992 1995 1998 2001 2004 2007 2010 2013 2016 2019 2022 2025 2028
irrig_thika
irrig_thiba irrig_tana2
irrig_tana1 irrig_sagana
irrig_mutonga irrig_masinga
Thika municipal Nairobi pipeline
Nairobi
Water Demand (not including loss, re-use and DSM)Scenario: Reference, All months
1989 1992 1995 1998 2001 2004 2007 2010 2013 2016 2019 2022 2025 2028 2031 2034
2,800
2,600
2,400
2,200
2,000
1,800
1,600
1,400
1,200
1,000
800
600
400
200
0
x Millioncubicmeter
9.
(WEAP)
10.
( , 2036 )
11.
( , 100
Gigajoules 51000 )
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1 : Water for food Water for life A comprehensive assessment of water management in agriculture. IWMI/Earthscan London 2007 2 : The spark has jumped the gap. Green Water Credits proof of concept . Green
Water Credits Report 7, ISRIC –World Soil Information, Wageningen, 2007
13. Tana :
12. Tana :
0
1 - 250251 - 500
501 - 750
751 - 1000
1001 - 12501251 - 1500
1501 - 1750
1751 - 20002001 - 3000
Blue Water (mm/y)
0 50 10025 Km
sbs 997.WYLDMM
Green Water CreditsTana Basin, Kenya
0 50 10025 Km
0 - 5
5 - 15
15 - 2525 - 50
50 - 75
75 - 100
100 - 150150 - 200
Green Water CreditsTana Basin, Kenya
Erosion (ton/ha)
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ISRIC
(IFAD)
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ISRIC - :
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详细信息请查阅绿⽔信贷⽹页: www.greenwatercredits.net或联系: P. Bindraban博⼠ ([email protected])
J. H. 考夫曼博⼠ ([email protected])⽩占国博⼠ ([email protected])
