CO2 and N availability (SCC Hofstetten)

Response of N availability to atmospheric CO₂ enrichment in a mature forest

The project CO₂ and N-availability is conducted at Hofstetten (SO), on a research site of the Botanical Institute of the University of Basel (Prof. C. Körner and his team). A crane is installed in this mixed forest, enabling to access the tree crowns (project Swiss canopy crane, SCC). The atmosphere around several trees is being enriched with CO₂ and the goal of our project is to measure the effect of this elevated CO₂ concentration onto the availability of nutrients (especially nitrogen) in the soil.

This research project started in spring 2001. It was integrated in the COST action E21: Contribution of forests and forestry to mitigate greenhouse effects and was financed until 2004 by the Swiss federal office for science and education. The initial experiment was conducted on broadleaved trees and was stopped in 2009. It was then replaced by a similar study on spruce trees.

Project details

Project duration

2001 - 2017

Project lead

Dr. Patrick Schleppi

Biogeochemistry

Forest Soils and Biogeochemistry

patrick.schleppi(at)wslto make life hard for spam bots.ch

+41 44 739 24 22+41 44 739 24 22

Birmensdorf

FURTHER INFORMATION

Publications

Klein, T.; Bader, M.K.-F.; Leuzinger, S.; Mildner, M.; Schleppi, P.; Siegwolf, R.T.W.; Körner, C., 2016: Growth and carbon relations of mature Picea abies trees under 5 years of free-air CO₂ enrichment. Journal of Ecology, 104, 6: 1720-1733. doi: 10.1111/1365-2745.12621

Schleppi, P.; Bucher-Wallin, I.; Hagedorn, F.; Körner, C., 2012: Increased nitrate availability in the soil of a mixed mature temperate forest subjected to elevated CO₂ concentration (canopy FACE). Global Change Biology, 18, 2: 757-768. doi: 10.1111/j.1365-2486.2011.02559.x

Bader, M.K.-F.; Leuzinger, S.; Keel, S.G.; Siegwolf, R.T.W.; Hagedorn, F.; Schleppi, P.; Körner, C., 2013: Central European hardwood trees in a high-CO₂ future: synthesis of an 8-year forest canopy CO₂ enrichment project. Journal of Ecology, 101, 6: 1509-1519. doi: 10.1111/1365-2745.12149

Schleppi, P.; Bucher-Wallin, I.; Saurer, M.; Jäggi, M.; Landolt, W., 2006: Citric acid traps to replace sulphuric acid in the ammonia diffusion of dilute water samples for ¹⁵N analysis. Rapid Communications in Mass Spectrometry, 20, 4: 629-634. doi: 10.1002/rcm.2351

Bucher-Wallin, I.K.; Schleppi, P.; Hagedorn, F.; Bucher, J.B., 2003: Soil nutrients in a mature mixed forest exposed to elevated CO₂. Ekologia Bratislava, 22, Suppl. 1/2003: 62-65.

>> Link to the publications