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The GEOMON network of Czech catchments provides long-term insights into altered forest biogeochemistry: From acid atmospheric deposition to climate change
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SYSNO ASEP 0543491 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The GEOMON network of Czech catchments provides long-term insights into altered forest biogeochemistry: From acid atmospheric deposition to climate change Tvůrce(i) Oulehle, Filip (UEK-B) RID, ORCID, SAI
Fischer, Milan (UEK-B) RID, ORCID, SAI
Hruška, Jakub (UEK-B) RID, SAI, ORCID
Chuman, Tomáš (UEK-B) RID, SAI, ORCID
Krám, Pavel (UEK-B) RID, SAI, ORCID
Navrátil, Tomáš (GLU-S) RID, SAI, ORCID
Tesař, Miroslav (UH-J) ORCID, SAI, RID
Trnka, Miroslav (UEK-B) RID, ORCID, SAICelkový počet autorů 8 Číslo článku e14204 Zdroj.dok. Hydrological Processes. - : Wiley - ISSN 0885-6087
Roč. 35, č. 5 (2021)Poč.str. 18 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova generic biomass functions ; beech fagus-sylvatica ; nitrogen deposition ; central-europe ; inorganic nitrogen ; soil carbon ; recovery ; chemistry ; water ; acidification ; acidification ; climate change ; drought ; eutrophication ; forest ecosystem ; nitrogen ; stream ; sulphur Vědní obor RIV DG - Vědy o atmosféře, meteorologie Obor OECD Water resources Vědní obor RIV – spolupráce Geologický ústav - Geochemie
Ústav pro hydrodynamiku - Hydrologie a limnologieCEP EF16_019/0000797 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CzeCOS III - 90123 - Ústav výzkumu globální změny AV ČR, v. v. i. Způsob publikování Omezený přístup Institucionální podpora UEK-B - RVO:86652079 ; GLU-S - RVO:67985831 ; UH-J - RVO:67985874 UT WOS 000655496700012 EID SCOPUS 85106916089 DOI 10.1002/hyp.14204 Anotace In 1994, a network of small catchments (GEOMON) was established in the Czech Republic to determine input-output element fluxes in semi-natural forest ecosystems recovering from anthropogenic acidification. The network consists from 16 catchments and the primary observations of elements fluxes were complemented by monitoring of biomass stock, element pools in soil and vegetation, and the main water balance components. Over last three decades, reductions of SO2, NOx and NH3 emissions were followed by sulphur (S) and nitrogen (N) deposition reductions of 75% and 30%, respectively. Steeper declines of strong acid anion concentrations compared to cations (Ca, Mg, Na, K, NH4) in precipitation resulted in precipitation pH increase from 4.5 to 5.2 in bulk precipitation and from 4.0 to 5.1 in spruce throughfall. Stream chemistry responded to changes in deposition: S leaching declined. However at majority of catchments soils acted as a net source of S to runoff, delaying recovery. Stream pH increased at acidic streams (pH < 6) and aluminium concentration decreased. Stream nitrate (NO3) concentration declined by 60%, considerably more than N deposition. Stream NO3 concentration was tightly positively related to stream total dissolved nitrogen to total phosphorus (P) ratio, suggesting the role of P availability on N retention. Trends in dissolved organic carbon fluxes responded to both acidification recovery and to runoff temporal variation. An exceptional drought occurred between 2014 and 2019. Over this recent period, streamflow decreased by approximate to 40% on average compared to 1990s, due to the increases of soil evaporation and vegetation transpiration by approximate to 30% and declines in precipitation by approximate to 15% on average across the elevational gradient. Sharp decreases of stream runoff at catchments <650 m a.s.l. corresponded to areas of recent forest decline caused by bark beetle infestation on drought stressed spruce forests. Understanding of the interactions among legacies of acidification and eutrophication, drought effects on the water cycle and forest disturbance dynamics is requisite for effective management of forested ecosystems under anthropogenic influence. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2022 Elektronická adresa https://onlinelibrary.wiley.com/doi/10.1002/hyp.14204
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