Karataş B. S.
JOURNAL OF APPLIED SCIENCES, cilt.7, sa.4, ss.607-611, 2007 (SCI-Expanded)
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Yayın Türü:
Makale / Tam Makale
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Cilt numarası:
7
Sayı:
4
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Basım Tarihi:
2007
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Dergi Adı:
JOURNAL OF APPLIED SCIENCES
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Derginin Tarandığı İndeksler:
Science Citation Index Expanded (SCI-EXPANDED)
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Sayfa Sayıları:
ss.607-611
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Akdeniz Üniversitesi Adresli:
Hayır
Özet
This study assesses the water delivery performance of
four selected Water User Associations (WUAs) in the Gediz Basin
irrigation system from the point of view of adequacy and equity for the years
2004 and 2005, using remote sensing techniques.
Adequacy of water delivery was determined according to irrigation ratio
(IR), water use ratio (WUR), and average of Normalized Difference Vegetation
Index (NDVIave), and equity according to values of the coefficient
of variation of NDVI (CVNDVI).
IR values for the WUAs varied between 48% and 89% each year, averaging
77% in 2004 and 76% in 2005. WUR values
for the selected WUAs varied from month to month each year, with seasonal
average values close to or greater than 1.
NDVIave values for all WUAs were higher in 2004 (0.32 as
against 0.42). CVNDVI values for 2004 varied between 0.14 and 0.23,
and for 2005 between 0.14 and 0.30.
The IR indicator showed that a WUA located at
the end of a main canal which served more than one WUA did not receive adequate
water. The WUR indicator showed that
while the amounts of water supplied during the season to the selected WUAs were
close to the amounts planned, in both seasons water was not supplied
homogeneously month by month. The NDVIave
indicator showed that the selected WUAs were more successful in supplying water
adequately in 2004. Finally, the CVNDVI
indicator showed that the selected WUAs were parallel in terms of equity in
both years; that is, it showed that a given WUA showed the similar success level
each year.