Figure 1.
Annual total (m3 y−1) and unit (m3 ha−1) (a) sustainable/unsustainable and (b) inefficient blue WFs for different crop categories Iran over the study period (2005–2015). The unit unsustainable or inefficient blue WFs (m3 ha−1) was estimated by dividing total unsustainable or inefficient blue WFs (m3 y−1) by the area of croplands (ha) in the specific province. (i.e., The Figure is created in the environment of Microsoft Office—Excel—version 10.).