Figure 4
From: Pu isotopes in soils collected downwind from Lop Nor: regional fallout vs. global fallout

240Pu/230Pu atom ratios in Jiuquan soil samples and other soil samples from China.
The two dashed lines represent the inventory-weighted average 240Pu/230Pu atom ratio of 0.158 and the global fallout value of 0.18. Data for the other soil samples include soils from Lanzhou in Northwest China (Ref. 17), Chongqing and Guizhou in Southwest China (Ref. 22), Hubei in Central China (Ref. 7) and Dalian in Northeast China (Ref. 21).