Rolling Stones and Moving Forests – Exploring the Shequ Glacier at the Kawagebo West face (Southeast Tibet)

Abstract ID: 3.8555 | Accepted as Talk | Talk/Oral | TBA | TBA

Andreas Von Hessberg (0)
Schulze, Waltraud (2)
Andreas Von Hessberg (1)
Schulze, Waltraud (2)

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(1) University of Bayreuth, Universitaetsstr. 30, 95445 Bayreuth, Germany

(1) University of Bayreuth, Universitaetsstr. 30, 95445 Bayreuth, Germany

Categories: Biodiversity, Fieldwork
Keywords: unknown area, biodiversity, glacier ecology, Southeast Tibet, unique landscape

Categories: Biodiversity, Fieldwork
Keywords: unknown area, biodiversity, glacier ecology, Southeast Tibet, unique landscape

After traveling through the steep and beautiful mountains of Southeast Tibetan plateau, we were fascinated by the unique biodiversity of this easternmost part of the Himalayas and the nearby Hengduan Shan mountain range, located at the border between Tibet and Yunnan, China. This region is one of the world’s top biodiversity hotspots. In 2005 and 2009, we visited the western face of Kawagebo (Meili Xue Shan)(summit at 6740 m) and the valley of the Shequ River, including its namesake glacier, to conduct floristic and geomorphological investigations. What makes this glacier so unique are two special factors. Firstly, a thick layer of rock and soil covers its entire surface, which enables primary succession, ultimately leading to the establishment of a forest, dominated by the poplar species Populus pseudoglauca, the sea buckthorn Hippophae tibetana and a Willow (Salix spec.). Secondly, the glacier flows in a narrow valley (direct sunlight only from midday onwards) from 3600 m a.s.l. down to the subtropical climate zone (the end of the glacier is at 2950 m a.s.l.). Through tree ring analyses, we determined that the maximum age of trees growing on the glacier is 60 years. Within the 5 to 6 km long glacier, several vegetation islands have formed, supporting forest growth. However, due to the glacier’s dynamic movements over a highly structured subsurface, several dead zones (crevasses) exist, beyond which these forests cannot survive. The densest and oldest forests are found near the glacier’s melting edge (terminus), where this “moving forest” reaches its final boundary.

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