Počet záznamů: 1
The Biological Origins of Soil Organic Matter in Different Land-Uses in the Highlands of Ethiopia
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SYSNO ASEP 0557110 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The Biological Origins of Soil Organic Matter in Different Land-Uses in the Highlands of Ethiopia Tvůrce(i) Assefa, D. (ET)
Mentler, A. (AT)
Sandén, H. (AT)
Rewald, B. (AT)
Godbold, Douglas (UEK-B) ORCID, SAICelkový počet autorů 5 Číslo článku 560 Zdroj.dok. Forests. - : MDPI
Roč. 13, č. 4 (2022)Poč.str. 25 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova church forests ; cuo oxidation ; biomarkers ; carbon ; plant ; degradation ; turnover ; opportunities ; conservation ; lipids ; suberin ; cutin ; CuO oxidation ; solvent extraction ; base hydrolysis ; biomarkers Vědní obor RIV GK - Lesnictví Obor OECD Forestry CEP LO1415 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UEK-B - RVO:86652079 UT WOS 000786164600001 EID SCOPUS 85128314744 DOI 10.3390/f13040560 Anotace In the Ethiopian highlands, clearance of Afromontane dry forest and conversion to crop and grazing land lead to land degradation and loss of soil organic matter (SOM). Eucalyptus is often grown on degraded soils, and this results in the partial recovery of soil carbon stocks. The aim of this work was to assess the biological sources of SOM in this land-use sequence. In top-soils (0-10 cm) of four land-use systems, namely remnant natural forest, eucalyptus plantation, cropland, and grazing land, in the Ethiopian highlands, the origin of SOM was investigated. For this, a sequential extraction method was used, involving a solvent extraction, base hydrolysis, and a subsequent CuO oxidation. In these extracts, biomarkers (molecular proxies) were identified to characterize the SOM of the soil of the four land-uses. Putative lipid monomers of leaf, root, and microbial degradation products suggest that root inputs and microbial inputs dominate in SOM of all the land-uses, except grazing land. The ratios of syringyls, vanillyls, and cinnamyls showed that non-woody angiosperm plants were the predominant source for lignin in eucalyptus, cropland, and grazing land soil. In the soils of the natural forest, lignin originates from both woody angiosperms and woody gymnosperms. Our study shows the importance of root and microbial inputs in the formation of SOM, but also that, in the natural forest, legacies of previous forest cover are present. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2023 Elektronická adresa https://www.mdpi.com/1999-4907/13/4/560
Počet záznamů: 1