The response of crop coefficient (Kc) to wind speed (Ws), relative humidity (RH), soil water content (VPD), and vapor pressure deficit (VPD), respectively.

<p>Kc data were averaged with Ws bins of 0.5⁻¹ (a), RH bins of 10% (b), SWC bins of 2% (c) and VPD bins of 0.2 kPa, respectively, during the growing season over the semi-arid farmland ecosystem in the Loess Plateau. Error bars represent one standard error.