TY - JOUR ID - 57989 TI - Spatial Prediction of wheat crop yield Using Digital Soil Mapping in Gotvand, Khuzestan Province JO - Iranian Journal of Soil and Water Research JA - IJSWR LA - en SN - 2008-479X AU - Taghizadeh Merjerdi, Roohollah AU - Seyed Jalali, Seyed Alireza AU - Sarmadian, Fereydoon AD - Y1 - 2016 PY - 2016 VL - 47 IS - 1 SP - 175 EP - 184 KW - Auxiliary variables KW - wrapper algorithm KW - Genetic programming KW - Spatial Variation DO - 10.22059/ijswr.2016.57989 N2 - A number of 110 observed crop yields were correlated with auxiliary variables (DEM and Landsat images) using genetic programming (GP) in Gotvand area (Khuzestan Province). The spatial prediction map of wheat crop yield was prepared using the obtained equation. Wrapper algorithm identified some more important auxiliary variables Nof: DVI, SAVI, and wetness index and channel network based level. RMSE, coefficient of determination and Lin's concordance coefficient of GP (1) with all the auxiliary data were obtained as 525.11, 0.87 and 0.82, respectively. Moreover, results indicated GP (2) with auxiliary data selected through wrapper algorithm could also reasonably predict wheat crop yield (RMSE, coefficient of determination and Lin's concordance coefficient, 530.82, 0.86 and 0.79, respectively). It can, therefore, be recommended to use the same approach to predict spatial distribution of crop yields in the future studies.   UR - https://ijswr.ut.ac.ir/article_57989.html L1 - https://ijswr.ut.ac.ir/article_57989_38cb7ad9cdc2d93f3420de94537fbefb.pdf ER -