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Progress in Earth and Planetary Science
Fig. 1 | Progress in Earth and Planetary Science

Fig. 1

From: Impact of permafrost degradation on the extreme increase of dissolved iron concentration in the Amur river during 1995–1997

Fig. 1

Topographic map of the Amur River basin. The northeastern (NE-Amur), northwestern (NW-Amur), and southern (S-Amur) study regions are enclosed by the red, green, and blue lines, respectively. Long-term monitoring of dissolved iron (dFe) concentration and discharge was conducted at Khabarovsk station (yellow dot). Area enclosed white line shows Sanjiang Plain where large-scale agricultural developments were conducted in twentieth century (see discussion 3.3). Shading areas denote different types of permafrost distribution, which was created by authors with reference to Shamov et al. (2014)

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