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Heritage Science
Fig. 3 | Heritage Science

Fig. 3

From: Experimental archaeological study in China: implications for reconstruction of past manuring and dietary practices indicated by δ15N values of Setaria italica and Panicum miliaceum

Fig. 3

The nitrogen isotope values of 508 samples in this experiment. (B and A under the fertilizer box refer to the samples before and after fermentation. L, M, and H correspond to low, medium, and high manuring levels, respectively, while CK, U, and CF correspond to unmanured, urea, and compound fertilizer treatments, respectively. The horizontal dashed line in the soil box indicates the original soil δ15N value before being manured (5.2 ‰ for Setaria and 7.0‰ for Panicum), and the horizontal dashed line in the grain box indicates the δ15N value of the seeds used for sowing (0.4‰ for Setaria and 2.3‰ for Panicum.). Each of the horizontal dashed lines and points in the figure corresponds to the data of one sample.)

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