Co-varying effects of vegetation structure and terrain attributes are responsible for soil respiration spatial patterns in a sandy forest–steppe transition zone
-
Published:2021-11-09
Issue:2
Volume:21
Page:95-107
-
ISSN:1399-1183
-
Container-title:Web Ecology
-
language:en
-
Short-container-title:Web Ecol.
Author:
Süle GabriellaORCID, Fóti Szilvia, Körmöczi László, Petrás Dóra, Kardos Levente, Balogh János
Abstract
Abstract. Forest–steppe habitats in central Hungary have contrasting canopy structure
with strong influence on the spatiotemporal variability of ecosystem
functions. Canopy differences also co-vary with terrain feature effects,
hampering the detection of key drivers of carbon cycling in this threatened
habitat. We carried out seasonal measurements of ecosystem functions (soil
respiration and leaf area index), microclimate and soil variables as well
as terrain features along transects for 3 years in poplar groves and the
surrounding grasslands. We found that the terrain features and the canopy
differences co-varyingly affected the abiotic and biotic factors of this
habitat. Topography had an effect on the spatial distribution of soil
organic carbon content. Canopy structure had a strong modifying effect
through allocation patterns and microclimatic conditions, both affecting
soil respiration rates. Due to the vegetation structure difference between
the groves and grasslands, spatial functional diversity was observed. We
found notably different conditions under the groves with high soil
respiration, soil water content and leaf area index; in contrast, on the
grasslands (especially in E–SE–S directions from the trees) soil temperature
and vapor pressure deficit showed high values. Processes of aridification
due to climate change threaten these habitats and may cause reduction in the
amount and extent of forest patches and decrease in landscape diversity.
Owing to habitat loss, reduction in carbon stock may occur, which in turn
has a significant impact on the local and global carbon cycles.
Publisher
Copernicus GmbH
Subject
Ecology,Ecology, Evolution, Behavior and Systematics
Reference62 articles.
1. Akima, H., Gebhardt, A., Petzold, T., and Maechler, M.:
Interpolation of Irregularly and Regularly Spaced Data, R Package
Version 0.6–2, available at:
<span class="uri">https://cran.r-project.org/web/packages/akima/akima.pdf</span> (last access: 2 November 2021), 2016. 2. Alexander, C., Deák, B., and Heilmeier, H.: Micro-topography driven vegetation patterns in open mosaic landscapes, Ecol. Indic., 60, 906–920, https://doi.org/10.1016/j.ecolind.2015.08.030, 2016. 3. Allaire, S. E., Lange, S. F., Lafond, J. A., Pelletier, B., Cambouris, A. N., and Dutilleul, P.: Multiscale spatial variability of CO2 emissions and correlations with physico-chemical soil properties, Geoderma, 170, 251–260, https://doi.org/10.1016/j.geoderma.2011.11.019, 2012. 4. Almagro, M., López, J., Querejeta, J. I., and Martínez-Mena, M.: Temperature dependence of soil CO2 efflux is strongly modulated by seasonal patterns of moisture availability in a Mediterranean ecosystem, Soil Biol. Biochem., 41, 594–605, https://doi.org/10.1016/j.soilbio.2008.12.021, 2009. 5. Balogh, J., Fóti, S., Pintér, K., Burri, S., Eugster, W., Papp, M., and Nagy, Z.: Soil CO2 efflux and production rates as influenced by evapotranspiration in a dry grassland, Plant Soil, 388, 157–173, https://doi.org/10.1007/s11104-014-2314-3, 2015.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|