Table 2.
Changes in positions of the upper treeline and directions of changes: in brackets—at the southeastern part of Russian Altai Mountains, whereas other figures specifically related to the Aktru Valley. Data from: Nazarov et al. 2012, 2016; Agatova et al. 2012a, b; Solomina 2014. (“<" denotes less than, “>” denotes more than, “” denotes increase and “” denotes decrease in height)
| Time period | Location and changes of the treeline limit positions |
|---|---|
| 10 380 ± 200 BP | (< 2700 m a.s.l.) |
| 7200 BP | (> 2500 m a.s.l.) |
| 6500 BP | (> 2500 m a.s.l.) |
| 5900–3200 BP | 2360 m a.s.l |
| 3100–2600 BP | < 2260 m a.s.l |
| 2600–1200 BP | 2250–2350 m a.s.l |
| 800–1050 AD | 2360 m a.s.l |
| 1100–1400 AD | Average 2340 reaching 2440 m a.s.l |
| 1400–1650 AD | 2370–2350 m a.s.l |
| 1650–1800 AD | 2340–2290 m a.s.l |
| 1800–1850 AD | 2290 m a.s.l |
| 1850–current | 2260–2365 m a.s.l |