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Based on the linearized theory of atmospheric gravity waves (AGW) and considering the effects of temperature perturbation on the chemical rate coefficients, the formulae of coupling relations between nj/n<sub>j</sub> and T'/T driven by AGW (n<sub>j</sub> and T denote the background quantities) are described, the coupling phases and amplitudes of minor constituents O<sub>3</sub>, NO, H, OH, and O are analyzed in detail for the mesopause (86 km) and just upside of the O layer (100 km) at daytime. A general principle is outlined: the coupling phases are strongly dependent on density scale heights and perturbation scales, while the amplitudes are little affected by these two factors. A criterion to distinguish the coupling behaviour is given: when the minor constituent number density scale height H<sub>j</sub> satisfies 1-γH<sub>m</sub>/H<sub>j</sub>>0 (H<sub>m</sub> denotes the scale height of the major constituent), the dynamical perturbation process always keeps the nj/n<sub>j</sub> in phase with T'/T, i.e. keeps the nj/n<sub>j</sub> in antiphase with that of the major constituent. The results obtained indicate that both the temperature dependence of reaction rate coefficients and the profile slopes of the O distribution may have a major influence on the behaviour of the coupling relations.