Conference
Presentation_1_Inorganic Carbon Leaching From a Warmed and Irrigated Carbonate Forest Soil.pdf
| العنوان: | Presentation_1_Inorganic Carbon Leaching From a Warmed and Irrigated Carbonate Forest Soil.pdf |
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| المؤلفون: | Andreas Schindlbacher, Kerstin Beck, Stefan Holzheu, Werner Borken |
| سنة النشر: | 2020 |
| المجموعة: | Frontiers: Figshare |
| مصطلحات موضوعية: | Agroforestry, Forestry Biomass and Bioproducts, Forestry Fire Management, Forestry Management and Environment, Forestry Pests, Health and Diseases, DIC, carbonate soil, soil CO2 efflux, DOC, δ13C, soil warming, irrigation, leaching |
| الوصف: | The response of dissolved inorganic carbon (DIC) leaching to rising temperature and precipitation is hardly known for forest soils on carbonate bedrock. We established field lysimeters, filled with soil from a humus-rich A horizon of a Rendzic Leptosol and detrital dolomite (C horizon) and conducted a two-factorial climate manipulation [control (C), soil warming (H, +4°C), irrigation (I, +50% precipitation), soil warming and irrigation (H+I)] to examine the effects of increased temperature and precipitation on DIC and DOC leaching, soil air CO 2 concentrations, and soil CO 2 efflux. We followed an isotopic approach to assess the biotic and abiotic DIC fractions. Soil warming (H) had no effect on DIC leaching and seepage DIC concentrations. Irrigation (I and H+I) increased annual DIC leaching by almost 100% as a matter of significantly increased seepage DIC concentrations and higher annual drainage. Isotopic partitioning of DIC fluxes suggested biotic contributions between 60 and 100% and no significant variation with warming or irrigation. Soil warming consistently increased the soil CO 2 efflux by >50% independently of irrigation treatment. Soil air CO 2 concentrations were not affected by soil warming alone (H). Irrigation (I and I+H) tended to increase subsoil (18 and 32 cm depth) soil air CO 2 concentrations, while topsoil (6 cm) remained unaffected by irrigation. DIC leaching losses were about 4–5 times higher than DOC leaching losses, which showed a similar treatment response (I and H+I > C and H). Annual DIC leaching amounted to between 20 ± 2 (C) and 39 ± 2 (H+I) g m −2 , representing ~ 2–5% of the total annual gaseous soil CO 2 loss. Our results suggest that climate change, especially changing precipitation, could significantly affect the DIC export from carbonate forest soils, thereby affecting their carbon sequestration potential. |
| نوع الوثيقة: | conference object |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/presentation/Presentation_1_Inorganic_Carbon_Leaching_From_a_Warmed_and_Irrigated_Carbonate_Forest_Soil_pdf/11947812 |
| DOI: | 10.3389/ffgc.2019.00040.s001 |
| الاتاحة: | https://doi.org/10.3389/ffgc.2019.00040.s001 https://figshare.com/articles/presentation/Presentation_1_Inorganic_Carbon_Leaching_From_a_Warmed_and_Irrigated_Carbonate_Forest_Soil_pdf/11947812 |
| Rights: | CC BY 4.0 |
| رقم الانضمام: | edsbas.E693D844 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3389/ffgc.2019.00040.s001 |
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