Fig. 5: Kernel density estimation of ICRs in different historical periods. | npj Heritage Science

Fig. 5: Kernel density estimation of ICRs in different historical periods.

From: Spatiotemporal distribution of immovable cultural relics and their relationships with geographic elements in Sichuan–Chongqing area

Fig. 5

a Prehistory to pre-Qin period; b Qin and Han to the Southern and Northern Dynasties; c Sui-Tang and Five Dynasties; d Song and Yuan Dynasties; e Ming and Qing Dynasties; f Modern and Contemporary Periods. The abbreviations in the figure refer to different prefecture-level city: Chengdu(CD), Mianyang(MY), Zigong(ZG), Panzhihua(PZH), Luzhou(LZ), Deyang(DY), Guangyuan(GY), Suining(SN), Neijiang(NJ), Leshan(LS), Ziyang(ZY), Yibin(YB), Nanchong(NC), Dazhou(DZ), Ya’an(YA), Aba(AB), Ganzi(GZ), Liangshan(L-S), Guang’an(GA), Bazhong(BZ), Meishan(MS), Chongqing(CQ).

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