Pedoecological Regularities of Organic Carbon Retention in Estonian Mineral Soils

Kõlli, Raimo; Köster, T.; Kauer, Karin; Lemetti, Illar

doi:10.4236/ijg.2010.13018

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…Quantitative parameters for characterization of soil groups (soil organic carbon and organic matter pools, agrochemical parameters, pedometrics of soil profiles) were taken from the database 'Pedon' formed mainly on the basis of our research (KôUi 1987), from the serial edition Soils of the Estonian SSR in Numbers (EAP 1989) and other published works on the studied soils (Asi et al 2004;Kolli et al 2010).…”

Section: Methods Used For Assessments and Calcnlationsmentioning

confidence: 99%

Interrelationships between soil cover and plant cover depending on land use

Köster¹,

Kõlli²

2013

Estonian Journal of Earth Sciences

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Interrelationships between soil cover and plant cover of normally developed (or postlithogenic) mineral soils are analysed on the basis of four sampling soil groups. The four-link pedo-ecological sequence of analysed soils, rendzinas → brown soils → pseudopodzolic soils → gley-podzols, forms a representative cross section in relation to the normal mineral soils of Estonia. All groups differ substantially from each other in terms of soil properties (calcareousness, acidity, nutrition conditions, profile fabric and humus cover). The primary tasks of the research were (1) to elucidate the main pedo-ecological characteristics of the four soil groups and their suitability for plant cover, (2) to evaluate comparatively soils in terms of productivity, sustainability, biodiversity and environmental protection ability and (3) to analyse possibilities for ecologically sound matching of soil cover with suitable plant cover. On the basis of the same material, the influence of land-use change on humus cover (epipedon) fabric, properties of the entire soil cover and soil–plant interrelationship were also analysed. An ecosystem approach enables us to observe particularities caused by specific properties of a soil type (species, variety) in biological turnover and in the formation of biodiversity

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Section: Methods Used For Assessments and Calcnlationsmentioning

confidence: 99%

Interrelationships between soil cover and plant cover depending on land use

Köster¹,

Kõlli²

2013

Estonian Journal of Earth Sciences

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“…Mullaanalüüsid tehti mulla peenesest, s.o osakestest läbimõõduga alla 2 mm. Mullaliikide määramisel oli aluseks "Eesti muldade kaardistamisühikute nimestik" (Kõlli & Lemetti, 1999) järgmiste muudatustega (Paal et al, 2004a): 'kahkjate muldade' asemel kasutasime nimetust 'näivleetunud mullad', 2) siiani nõrgalt leetunud liivmuldadena käsitletud, kuid profiilis morfoloogiliste leetumistunnusteta peenliivmuldi nimetasime 'küllastumata sidus-liivmuldadeks', eristamaks neid teistest nõrgalt leetunud küllastumata muldadest, mille lõimiseks on sõre liiv.…”

Section: Väliandmete Kogumineunclassified

Eesti sürjametsad; nende tüübid ja indikaatorliigid

Paal

Turb²,

Köster³

et al. 2022

Forestry Studies

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The aims of the study were: (i) to examine how well the hillock forests are distinguishable from the forests of comparable site types, (ii) to ascertain the hillock forest indicator species, (iii) to elucidate the hillock forests’ community types, (iv) to assess the practical requirement for differentiation of hillock forests as a self-sufficient typological unit for forestry. The data included altogether 160 descriptions of hillock forest communities and 42 relevés of other site type stands for comparison. The historical continuity of hillock forests was estimated from old topographic maps. We established that the hillock forests constitute statistically a reliable distinct group of forests. Among the characteristic species having an indicator value significance level of up to 0.50, by the ecological strategy 43.2% belong to competitors, 37.8% are competitors and stress-tolerant ruderals, and 10.8% competitors and stress tolerators; according to the hemeroby, 62.5% of these species are apophyts and 30.0% hemeradiaphors. Most hillock forests (55.6%) are located on former slash-and-burn areas (bushlands) or reforested agricultural land (36.1%). The hillock forests can be classified into four forest types: 1) Fragaria vesca–Festuca ovina–Pinus sylvestris type, 2) Fragaria vesca–Oxalis acetosella–Pinus sylvestris type, 3) Fragaria vesca–Viola mirabilis–Picea abies–Populus tremula type and, 4) Fragaria vesca–Equisetum pratense–Betula pendula type. There is no need to define the hillock forests as a separate forest site type in practical forest typology, nevertheless recognition of these forests as representing the habitat directive type 9060 is important from the viewpoint of biodiversity maintenance.

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“…Pastaraisiais metais įvairiose pasaulio šalyse atliekama vis daugiau tyrimų, susijusių su dirvožemio C org. ir dirvožemio azotu (Kõlli et al, 2010;Bardule et al, 2017). Žemės ūkio tikslams naudojamuose žemapelkės durpžemiuose yra sukaupta daug dirvožemio C org.…”

Section: įVadasunclassified

Concentrations of nitrogen and organic carbon in different uses of Terric Histosol

Staugaitis¹,

Šarka²

2020

zemesukiomokslai

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In 2016–2019 in Eastern Lithuania, in Naujienos Terric Histosol (HSs-d), where natural and cultural meadows are grown and areas of cereal crops are annually cultivated, monitoring sites were installed. There at different times of the year at different Histosol depth – 0–30, 30–60 and 60– 90 cm layers, organic carbon (Corg.), total nitrogen (Nsum.) and mineral nitrogen (Nmin) concentration and their relationship were investigated. The studies have shown that the highest Nmin concentration was found in natural meadows areas, followed by cultural meadows areas, and finally cereal crops areas; in Terric Histosol at the 0–30 cm depth, mean concentrations were obtained, 100.7, 88.3 and 79.0 mg kg–1, respectively. The highest Nmin concentration was observed in the first days of July. It was 137.6 and 105.4 mg kg–1 in natural and cultural meadows areas, respectively. In deeper Terric Histosol layers, the Nmin concentration in cereal crops areas was slightly different. At the 30–60 cm depth, it ranged from 45.6 to 102.2 mg kg–1 over the years, and at the 60–90 cm depth from 55.1 to 87.2 mg kg–1. Nitrate formed the major part of mineral nitrogen in the studied Terric Histosol – 49.7–91.0%. Corg. concentration at the 0–30 cm depth in natural meadows areas was 41.2%, in cultural meadows areas it was 35.6% and in cereal crops areas 19.4%. The same sequence of Nsum. concentration was found – 3.04, 2.18 and 1.97%, and C:N ratio – 13.6, 16.3 and 9.8%. At deeper Terric Histosol layers the values of these indicators differed slightly between the crops areas. The Nmin concentration at 0–30 and 30–60 cm depth correlated best with the C:N ratio (r0–30 cm = 0.872**, r30–60 cm = 0.562*), Nsum. concentration (r0–30 cm = 0.618*, r30–60 cm = 0.568*) and to a lesser extent with the Corg. concentration (r0–30 cm = 0.341, r30–60 cm = 0.564*).

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Pedoecological Regularities of Organic Carbon Retention in Estonian Mineral Soils

Cited by 5 publications

References 19 publications

Interrelationships between soil cover and plant cover depending on land use

Interrelationships between soil cover and plant cover depending on land use

Eesti sürjametsad; nende tüübid ja indikaatorliigid

Concentrations of nitrogen and organic carbon in different uses of Terric Histosol

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