Fig. 6: Spatial distribution of TCH of water-related settlement place names in different years in the Manas River Basin.

a Spatial distribution of TCH of water-related settlement place names in 1864, b spatial distribution of TCH of water-related settlement place names in 1912, c spatial distribution of TCH of water-related settlement place names in 1954, d spatial distribution of TCH of water-related settlement place names in 1983.