hydrology water resources ANN Anhui Province Bayesian technique Beta-Lognormal model Burg entropy EEF method ENSO El Niño GB2 distribution Hei River basin Hexi corridor Kolmogorov complexity Lagrangian function Loess Plateau NDVI Poyang Lake basin Shannon entropy T1-995 TA1-2040 TA170-171 Tsallis entropy accelerating genetic algorithm ant colony fuzzy clustering arid region bagging bootstrap aggregating bootstrap neural networks canopy flow