Spatial distribution of fine-roots in boreal forests in eastern Sweden

Persson, Henrik J.; Stadenberg, I.

doi:10.1007/s11104-008-9811-1

Cited by 30 publications

(31 citation statements)

References 38 publications

(73 reference statements)

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“…In the boreal forest ecosystems trees are frequently sparsely distributed and a sub- stantial field layer is developed (cf. Persson 1978;Palviainen et al 2005;Helmisaari et al 2007;Persson and Stadenberg 2009). The low tree density, at our site, favoured the development of a luxurious field layer.…”

Section: Discussionmentioning

confidence: 65%

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Fine root dynamics in a Norway spruce forest (Picea abies (L.) Karst) in eastern Sweden

Persson

Stadenberg

2009

Plant Soil

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The annual dynamics of live and dead fine roots for trees and the field layer species and live/dead ratios were investigated at a coniferous fern forest (Picea abies L. Karts) in Sweden. Our methods of estimating the average amount of fine roots involved the periodic sampling of fine roots in sequential cores on four sampling occasions. The highest live/dead ratio was found in the upper part of the humus layer for both tree and field-layer species and decreased with depth. Most tree fine roots on the four sampling occasions were found in the mineral soil horizon, where 86, 81, 85 and 89% of <1 mm and 89, 88, 89 and 92% of <2 mm diameter of the total amounts of live fine roots in the soil profile were found. The mean amounts of live fine roots of tree species for the total soil profile on the four sampling occasions was 317, 150, 139 and 248 g m −2 for <1 mm and 410, 225, 224 and 351 g m −2 for <2 mm diameter fine roots. The related amount of dead fine roots was 226, 321, 176 and 299 g m −2 and 294, 424, 282 and 381 g m −2 , respectively. Average amounts of live and dead fine-roots and live/dead ratios from other Picea abies forest ecosystems were within the range of our estimates. The production of fine roots, <1 and <2 mm in diameter, estimated from the annual increments in live fine roots, was 207 and 303 g m −2 . The related accumulation of dead fine roots was 257 and 345 g m −2 , The turnover rate of tree fine roots <1 mm in diameter in the total soil profile amounted to 0.7 yr −1 for live and 0.8 yr −1 for dead fine roots. The related turnover rates for tree fine roots <2 mm were 0.4 yr −1 and 0.7 yr −1 . Our data, although based on minimum estimates of the annual fluxes of live and dead fine roots, suggests a carbon flow to the forest soil from dead fine-roots even more substantial than from the needle litter fall. Fine-root data from several Picea abies forest ecosystems, suggest high turnover rates of both live and dead tree fine-roots.

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Section: Discussionmentioning

confidence: 65%

“…The soil corer was driven to a depth where only few root fragments were sampled in the deepest soil layer (cf. Persson and Stadenberg 2009).…”

Section: Methodsmentioning

confidence: 99%

Fine root dynamics in a Norway spruce forest (Picea abies (L.) Karst) in eastern Sweden

Persson

Stadenberg

2009

Plant Soil

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“…It can also be seen that the thin roots displayed greater biomass during the rainy season, reaching a maximum value of 0.78 t ha -1 in the first year (Table 4); a lower value than that found by Persson and Stadenberg (2009), who found 2.8 t ha -1 when studying a fragment of dry forest in Sweden.…”

Section: Stocks Of Carbon In the Rootsmentioning

confidence: 60%

Carbon stocks in a tropical dry forest in Brazil

Pereira

Andrade

Palácio

et al. 2016

Revista Ciência Agronômica

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-The dry forests are the type most widely distributed vegetation in the tropics, and studies aimed at quantifying the carbon stock in these forests are important for it to be quantified their participation as mitigating the effects of climate change. With that in mind, the aim of this research was to quantify the carbon stocks in the woody, herbaceous, litter and root components of a patch of dry tropical forest, with 30 years of regeneration in Iguatu-CE, Brazil. Initially the vegetation was inventoried by means of a floristic and phytosociological survey of the woody component in a 1 ha area which had been under conservation. The biomass was then estimated employing allometric equations, and the stored carbon was quantified. Stocks of carbon in the litter and the herbaceous plants were determined by monitoring their biomass over 24 months, with subsequent conversion into carbon. Carbon stocks in the roots were estimated as the product of their biomass and carbon concentrations, for this were collected 20 samples at a depth of up to 30 cm deep in the dry and rainy season. It was found that the carbon content varies with the chamber and evaluated by adding carbon stored in woody compartments (19,27 t ha Key words: Semi-arid. Caatinga. Biomass. RESUMO -As florestas secas são amplamente distribuídas nos trópicos, e estudos que visam quantificar o estoque de carbono nessas florestas são importantes para que possa ser quantificada sua participação como mitigadora dos efeitos das mudanças climáticas. Nesse sentido, objetivou-se com essa pesquisa quantificar o estoque de carbono nos componentes: arbustivoarbóreo, herbáceo, serrapilheira e raízes em um fragmento de floresta tropical seca, com 30 anos de regeneração, no município de Iguatú-CE. Inicialmente, realizou-se o inventário da vegetação, através de um levantamento florístico e fitossociológico do componente arbustivo-arbóreo. Posteriormente, estimou-se sua biomassa, empregando-se equações alométricas; em sequencia foi quantificado o carbono estocado. Já o estoque de carbono contido na serrapilheira e nas plantas herbáceas foi determinado através do monitoramento de suas biomassas, durante 24 meses, com posterior conversão dessas para carbono. O estoque de carbono contido nas raízes foi estimado através do produto entre suas biomassas e a concentração de carbono, para isso foram coletadas 20 amostras na camada de até 30 cm de profundidade no período seco e chuvoso, totalizando 40 amostras por ano. O teor de carbono varia de acordo com o compartimento avaliado, e somando-se o carbono estocado nos compartimentos arbustivo-arbóreo (19,27 t ha . Isso evidencia, portanto, a contribuição efetiva da floresta tropical seca na diminuição do CO 2 atmosférico. Palavras-chave: Semiárido. Caatinga. Biomasa.

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“…With the abundant fine root tissue, abroad distribution and rapid ecological turnover rate, soil organic matter would increase by herbaceous transiting from dead root tissue and root exudate. That is the reason why soil organic carbons in forest soil always enrich in the surface soil (Persson & Stadenberg 2009;2010). Even so, soil microbial biomass in steppe zone was significantly lower than forest and forest-steppe zone.…”

Section: Discussionmentioning

confidence: 99%

Plant functional traits and soil microbial biomass in different vegetation zones on the Loess Plateau

Xue

Cheng

et al. 2014

Journal of Plant Interactions

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Plant functional traits built the relationships between plant diversity, species composition, and physiology along with the environmental changes, thus influencing soil microbial community. As the sensitivity indicators, soil microbial biomass and plant functional traits responses soil micro-organism and plant characteristics in direct way. Ten plant functional traits of 149 species and soil microbial biomass (carbon, nitrogen, and phosphorus) were analyzed across the different vegetation types (forest, forest-steppe, and steppe) that are divided by environmental gradient (temperature and precipitation), aimed to find the correlations among them. Our results confirmed the greatest values of plant functional traits (except the leaf density and the fine root density) that were distributed in the steppe zone, mainly due to the different mean annual temperature and mean annual precipitation conditions. For different plant growth forms, the plant functional traits were significant differences among the vegetation zones. The advantages of higher rate nutrient cycling, plentiful biomass supplements, and favorite habit conditions lead to the forest-steppe zone with the highest C mic and N mic concentrations. The canonical correlation analysis indicated that leaf nitrogen, root nitrogen, and fine root densities were correlated with root exudate and tissue which affected the concentrations of soil organic carbon (SOC) and total nitrogen (N), consequently impacting soil microbial biomass carbon (C mic ) and soil microbial biomass nitrogen (N mic ). Soil is the medium that connects micro-organism and plant root system that influenced leaf nitrogen, root nitrogen, and fine root density of plant functional traits, the concentrations of SOC and total N that plant feedback are consequently influencing C mic and N mic .

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Spatial distribution of fine-roots in boreal forests in eastern Sweden

Cited by 30 publications

References 38 publications

Fine root dynamics in a Norway spruce forest (Picea abies (L.) Karst) in eastern Sweden

Fine root dynamics in a Norway spruce forest (Picea abies (L.) Karst) in eastern Sweden

Carbon stocks in a tropical dry forest in Brazil

Plant functional traits and soil microbial biomass in different vegetation zones on the Loess Plateau

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