FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W852051289> ?p ?o ?g. }

• W852051289 abstract "Tree species influence the soil through stemflow and throughfall water, leaf litter and the root system. Little is known about the effects of tree roots on the C and N dynamics of the soil and the gas exchange with the atmosphere. In the present study, the effects of European beech (Fagus sylvatica) and Common ash (Fraxinus excelsior L.) saplings, as important European broad-leaved tree species, on C and N fluxes in the soil of a species-rich temperate forest were investigated under constant climatic conditions. The main objective was to identify root-induced changes in the greenhouse gas fluxes of CO2, CH4, and N2O between soil and atmosphere. A stepwise experimental approach was used to extend the knowledge about rhizosphere effects on soil biogeochemistry. In the first step, the effects of simple C and N alteration by KNO3 (equivalent to 200 kg N ha-1 yr-1) and glucose addition (equivalent to 9419 kg C kg ha-1 yr-1) on the fluxes of CO2, CH4, and N2O were investigated for a basic understanding of the C and N dynamics in the incubated forest soil (Chapters 2 and 3). In the next step, the changes due to C and N alteration were compared with the putatively complex effects of ash roots on CO2 and N2O emissions in soil columns (Chapter 4). Finally, species-specific effects of the roots of beech and ash saplings on the C and N cycling of the soil were analysed in soil columns and novel double-split-root rhizotrons (Chapters 4, 5, and 6). The experimental investigation of the effects of NO3- and glucose addition on the greenhouse gas exchange (Chapter 2) revealed a large reduction in net CH4 uptake due to increased N availability and saturating doses of C (reductions up to 86% and 83%, respectively). Moreover, addition of NO3- and glucose increased the N2O emissions by factors of 8 and 39, respectively, whereas the CO2 efflux remained constant after N addition and increased dramatically up to 11-fold after C addition (Chapter 3). A synergistic effect of C and N addition on all three investigated gas fluxes could be shown. The results of the simple C and N addition experiments suggest that the effect of the large C addition on all three investigated greenhouse gases, including the measured N emissions, was larger than the effect of elevated N availability, which might be important under a variable climate. The comparison of the effects of N addition and the presence of ash roots on CO2 and N2O emissions showed that the ash roots greatly reduced the N2O emissions by up to 98%, whereas N addition increased the N2O emissions just by 54% (Chapter 4). These results indicate that the effect of ash saplings on N2O might not be exclusively explained by the N uptake of the roots, and that plant species effects of the rhizosphere changes should achieve a higher attention in future studies on the greenhouse gas balance of forest soils. As in the soil columns, the rhizotron experiment showed a large reduction of N2O emissions by ash roots (Chapter 5). In contrast, the reduction of N2O release in presence of beech saplings was only slight or not visible in the rhizotrons and the soil columns (Chapters 4 and 5). The CO2 emissions from soil planted with ash tended to be higher than, or were similar to, the emissions from soil planted with beech (Chapters 4 and 5). Due to the higher relative contribution of root respiration to total soil respiration in ash rhizotrons (35.5 ± 8.5 vs. 9.0 ± 2.7 %, Chapter 5), we assume that a higher activity of saprotrophic fungi and a larger microbial-specific respiration was responsible for the similar CO2 effluxes from soil under beech and ash (Chapter 6). In the rhizotron approach, the CH4 uptake was significantly increased under ash compared to the control soil (Chapter 5), while beech saplings did not significantly affect the CH4 uptake. In contrast to the observed changes in greenhouse gas fluxes, the C and N stocks of soil under beech and ash were only slightly different. In conclusion, the gas fluxes from the soil to the atmosphere can be used as sensitive indicators of even small changes in the biogeochemical processes of forests. Despite the higher CO2 efflux from soil under ash, the greenhouse gas balance calculated as the sum of CO2, CH4, and N2O fluxes tended to be more favourable for soil under ash than for soil under beech saplings in all experiments, which indicates a mitigating influence of European ash on the greenhouse gas balance of temperate forest soils. Further field and laboratory research on the relation between root systems and greenhouse gas fluxes from the soil are needed for realistic predictions of the future greenhouse gas balance under changing climatic conditions." @default.
• W852051289 created "2016-06-24" @default.
• W852051289 creator A5031653073 @default.
• W852051289 date "2012-12-07" @default.
• W852051289 modified "2023-09-27" @default.
• W852051289 title "The rhizosphere effects of Fagus sylvatica L. and Fraxinus excelsior L. saplings on greenhouse gas fluxes between soil and atmosphere" @default.
• W852051289 cites W1608992375 @default.
• W852051289 cites W2019056784 @default.
• W852051289 cites W2057661348 @default.
• W852051289 cites W2063642813 @default.
• W852051289 cites W2074653828 @default.
• W852051289 cites W2088925690 @default.
• W852051289 cites W2100494756 @default.
• W852051289 cites W2138611259 @default.
• W852051289 cites W2147346418 @default.
• W852051289 cites W2148303922 @default.
• W852051289 cites W2163527291 @default.
• W852051289 cites W2170724714 @default.
• W852051289 hasPublicationYear "2012" @default.
• W852051289 type Work @default.
• W852051289 sameAs 852051289 @default.
• W852051289 citedByCount "0" @default.
• W852051289 crossrefType "dissertation" @default.
• W852051289 hasAuthorship W852051289A5031653073 @default.
• W852051289 hasConcept C154414509 @default.
• W852051289 hasConcept C159390177 @default.
• W852051289 hasConcept C159750122 @default.
• W852051289 hasConcept C185592680 @default.
• W852051289 hasConcept C2776500793 @default.
• W852051289 hasConcept C2778934191 @default.
• W852051289 hasConcept C2779705648 @default.
• W852051289 hasConcept C2780144066 @default.
• W852051289 hasConcept C39432304 @default.
• W852051289 hasConcept C523546767 @default.
• W852051289 hasConcept C54355233 @default.
• W852051289 hasConcept C55157361 @default.
• W852051289 hasConcept C59822182 @default.
• W852051289 hasConcept C6557445 @default.
• W852051289 hasConcept C86626682 @default.
• W852051289 hasConcept C86803240 @default.
• W852051289 hasConceptScore W852051289C154414509 @default.
• W852051289 hasConceptScore W852051289C159390177 @default.
• W852051289 hasConceptScore W852051289C159750122 @default.
• W852051289 hasConceptScore W852051289C185592680 @default.
• W852051289 hasConceptScore W852051289C2776500793 @default.
• W852051289 hasConceptScore W852051289C2778934191 @default.
• W852051289 hasConceptScore W852051289C2779705648 @default.
• W852051289 hasConceptScore W852051289C2780144066 @default.
• W852051289 hasConceptScore W852051289C39432304 @default.
• W852051289 hasConceptScore W852051289C523546767 @default.
• W852051289 hasConceptScore W852051289C54355233 @default.
• W852051289 hasConceptScore W852051289C55157361 @default.
• W852051289 hasConceptScore W852051289C59822182 @default.
• W852051289 hasConceptScore W852051289C6557445 @default.
• W852051289 hasConceptScore W852051289C86626682 @default.
• W852051289 hasConceptScore W852051289C86803240 @default.
• W852051289 hasLocation W8520512891 @default.
• W852051289 hasOpenAccess W852051289 @default.
• W852051289 hasPrimaryLocation W8520512891 @default.
• W852051289 hasRelatedWork W1967298151 @default.
• W852051289 hasRelatedWork W2015923899 @default.
• W852051289 hasRelatedWork W2045834884 @default.
• W852051289 hasRelatedWork W2065980029 @default.
• W852051289 hasRelatedWork W2092704063 @default.
• W852051289 hasRelatedWork W2096417812 @default.
• W852051289 hasRelatedWork W2117688450 @default.
• W852051289 hasRelatedWork W2133007315 @default.
• W852051289 hasRelatedWork W2150470140 @default.
• W852051289 hasRelatedWork W2175191437 @default.
• W852051289 hasRelatedWork W2178004034 @default.
• W852051289 hasRelatedWork W2277439716 @default.
• W852051289 hasRelatedWork W2529528123 @default.
• W852051289 hasRelatedWork W2656857213 @default.
• W852051289 hasRelatedWork W2742787147 @default.
• W852051289 hasRelatedWork W2930042355 @default.
• W852051289 hasRelatedWork W2947716502 @default.
• W852051289 hasRelatedWork W3049491870 @default.
• W852051289 hasRelatedWork W3151883808 @default.
• W852051289 hasRelatedWork W97659260 @default.
• W852051289 isParatext "false" @default.
• W852051289 isRetracted "false" @default.
• W852051289 magId "852051289" @default.
• W852051289 workType "dissertation" @default.