Miehe, G; Schleuss, P-M; Seeber, E; Babel, W; Biermann, T; Braendle, M; Chen, F; Coners, H; Foken, T; Gerken, T; Graf, HF; Guggenberger, G; Holzapfel, M; Ingrisch, J; Kuzyakov, Y; Lai, Z; Lehnert, L; Leuschner, C; Li, X; Liu, J; Liu, S; Ma, Y; Miehe, S; Mosbrugger, V; Schmidt, J; Spielvogel, S; Unteregelsbacher, S; Wang, Y; Willinghöfer, S; Xu, X; Yang, Y; Zhang, S; Opgenoorth, L; Wesche, K: The Kobresia pygmaea ecosystem of the Tibetan highlands – Origin, functioning and degradation of the world's largest pastoral alpine ecosystem, Science of the Total Environment, 648, 754-771 (2019), doi:https://doi.org/10.1016/j.scitotenv.2018.08.164 [Link]
Abstract:

With 450,000 km2 Kobresia (syn. Carex) pygmaea dominated pastures in the eastern Tibetan highlands are the world's largest pastoral alpine ecosystem forming a durable turf cover at 3000–6000ma.s.l. Kobresia's resilience and competitiveness is based on dwarf habit, predominantly below-ground allocation of photo assimilates, mixture of seed production and clonal growth, and high genetic diversity. Kobresia growth is co-limited by livestockmediated nutrient withdrawal and, in the drier parts of the plateau, low rainfall during the short and cold growing season. Overstocking has caused pasture degradation and soil deterioration over most parts of the Tibetan highlands and is the basis for this man-made ecosystem. Natural autocyclic processes of turf destruction and soil erosion are initiated through polygonal turf cover cracking, and accelerated by soil-dwelling endemic small mammals in the absence of predators. The major consequences of vegetation cover deterioration include the release of large amounts of C, earlier diurnal formation of clouds, and decreased surface temperatures. These effects decrease the recovery potential of Kobresia pastures and make them more vulnerable to anthropogenic pressure and climate change. Traditional migratory rangeland management was sustainable over millennia, and possibly still offers the best strategy to conserve and possibly increase C stocks in the Kobresia turf.

Aktuelle Termine

Do. 08.12.2022
Vorstellungsgespräche Leitung ÖBG
BayCEER-Kolloquium:
Do. 08.12.2022
Microbial-mineral interactions: Formation of pyrite and implications for biosignature and environmental research
Do. 15.12.2022
Climate, Environmental and Human History in the Highlands of Ethiopia
Ökologisch-Botanischer Garten:
So. 04.12.2022
Führung | Überleben bei Eis und Schnee: Wie Tiere überwintern
So. 01.01.2023
Führung | Startklar! Bäume und ihre Knospen
Wetter Versuchsflächen
Luftdruck (356m): 976.7 hPa
Lufttemperatur: 0.6 °C
Niederschlag: 0.4 mm/24h
Sonnenschein: <1 h/d

...mehr
Globalstrahlung: 47 W/m²
Lufttemperatur: -2.7 °C
Niederschlag: 0.0 mm/24h
Wind (Höhe 32m): 8.2 km/h

...mehr
Diese Webseite verwendet Cookies. weitere Informationen