Spatiotemporal Characteristics of Winter Wheat Waterlogging in the Middle and Lower Reaches of the Yangtze River, China

Figure 6

Spatial distribution of the winter wheat waterlogging frequency (in percent) estimated by the WPI in spring. (a) Mild-to-severe, (b) mild, and (c) moderate-to-severe waterlogging of winter wheat.

(a)

(b)

(c)