Chamber series and space-scale analysis of CO2 gas-exchange in grassland vegetation: A novel approach

Title:

Chamber series and space-scale analysis of CO2 gas-exchange in grassland vegetation: A novel approach

Creator:

Czóbel, Sz., Fóti , Sz., Balogh, J., Nagy, Z., Bartha, S., and Tuba, Z.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:50683b2f-cf77-4b49-91e4-2e2e594b9b71
uuid:50683b2f-cf77-4b49-91e4-2e2e594b9b71
issn:0300-3604
doi:10.1007/s11099-005-0043-9

Subject:

canopy chamber, grassland, loess, sand, and stand CO2 measurements

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Significant part of our work was developing a new type of CO2 and H2O gas exchange chambers fit for measuring stand patches. Ground areas of six chambers (ranged between 0.044-4.531 m2) constituted a logarithmic series with doubling diameters from 7.5 to 240.0 cm. We demonstrate one of the first results for stand net ecosystem CO2 exchange (NEE) rates and temporal variability for two characteristic Central European grassland types: loess and sand. The measured mean NEE rates and their ranges in these grasslands were similar to values reported in other studies on temperate grasslands. We also dealt with the spatial scale dependence from ecophysiological point of view. Our chamber-series measurement was performed in a perennial ruderal weed association. The variability of CO2-assimilation of this weed vegetation showed clear spatial scale-dependence. We found the lowest variability of the vegetation photosynthesis at the small-middle scales. The results of spatial variability suggest the 0.2832 m2 patch size is the characteristic unit of the investigated weed association and there is a kind of synphysiological minimi-area with characteristic size for each vegetation type. and Sz. Czóbel ... [et al.].

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

267-272

Source:

Photosynthetica | 2005 Volume:43 | Number:2

Harvested from:

CDK

Metadata only:

false