During the creation of maps in Fig. 1, 4, 8, and 9 to 13 with GIS software, some of the data were lost and the 10 map segments in the South China Sea did not display properly. This erraum contains new versions of Fig. 1, 4, 8, and 9 to 13 that show the complete map of China with the contour lines. . Distribution diagram of trends in rice and wheat yield. Areas in green represent ones with a linear trend of yield, areas in blue represent trends of yield increase followed by a decrease (PW−), and areas in red represent trends of yield decrease followed by increase (PW+). in the maps, we show only the areas in the district where the crop was harvested.
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