Land suitability
classifi
cation is a useful management pra
cti
ce to ensure planned and sustainable use of agri
cultural lands a
ccording to their potentials. The main purposes of this study were to analyze land suitability for bread wheat (
Triticum aestivum)
cultivation and generate a land suitability map for wheat by integrating the analyti
cal hierar
chy (AHP)-fuzzy algorithm with the Geographi
cal Information System (GIS) in the Tozanlı sub-basin lo
cated in the upper part of Yeşilırmak Basin, Turkey. Topographi
c (elevation, slope, aspe
ct)
chara
cteristi
cs of the basin and some of physi
cal and
chemi
cal properties of soils (texture, pH, ele
ctri
cal
condu
ctivity, lime, organi
c matter, and soil depth) were used as
criteria in determining the suitability
classes. Ninety-two disturbed soil samples were
colle
cted from 0 to 20
cm depth in O
ctober 2017 using random sampling method. Weighted overlay spatial analysis in GIS was used to
combine different themati
c layers to identify areas suitable for wheat produ
ction. The fuzzy-AHP suitability assessment model was adapted to determine the weights for topographi
c and soil properties. The highest spe
cifi
c weights were obtained for soil depth (0.232) and elevation (0.218), while the lowest weight was
cal
culated for aspe
ct (0.042). Highly, moderately, and marginally suitable lands for wheat
cultivation
cover 2.63, 9.85 and 32.59% of the study area, respe
ctively. In addition, the results indi
cated that 54.92% of the total area is permanently unsuitable for wheat
cultivation. The results revealed that integration of AHP-fuzzy algorithm and GIS te
chniques is a useful method for a
ccurate evaluation of land suitability in planning for spe
cifi
c crop produ
ction and de
creasing the negative environmental impa
cts of agri
cultural pra
cti
ces.
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