32 research outputs found
Cinética de absorção de amônio e crescimento radicular das cultivares de arroz Agulha e Bico Ganga
Heterotrophic microbial activities and nutritional status of microbial communities in tropical marsh sediments of different salinities: the effects of phosphorus addition and plant species
Der EinfluĂź von Bodenbearbeitung und N-DĂĽngung auf die Verteilung von 14C-markierten Assimilaten auf SproĂź und Wurzel sowie auf die Rhizodeposition bei Winterraps
Fazieseinheiten aus dem Aachen-Erkelenzer Oberkarbonvorkommen unter besonderer Beruecksichtigung des Inde-Synklinoriums
SIGLEAvailable from TIB Hannover: DW 851 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman
Genese des Aachener Oberkarbonvorkommens - Entwicklung eines qualitativ/quantitativen Modells zur Kohlenprospektion Abschlussbericht
SIGLEAvailable from TIB Hannover: FR 4666 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman
Potassium uptake efficiency and dynamics in the rhizosphere of maize (Zea mays L.), wheat (Triticum aestivum L.), and sugar beet (Beta vulgaris L.) evaluated with a mechanistic model
Significance of root growth and activity for genotypic differences in nitrogen efficiency of rape Brassica napus
Modified ingrowth core method plus infrared calibration models for estimating fine root production in peatlands
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Fine root turnover
Fine roots constitute an interface between plants and soils and thus play a crucial part in forest carbon, nutrient and water cycles. Their continuous growth and dieback, often termed turnover of fine roots, may constitute a major carbon input to soils and significantly contribute to belowground carbon cycle. For this reason, it is of importance to accurately estimate not only the standing biomass of fine roots, but also its rate of turnover. To date, no direct and reliable method of measuring fine root turnover exists. The main reason for this is that the two component processes of root turnover, namely growth and dieback of fine roots, nearly always happen in the same place and at the same time. Further, the estimation of fine root turnover is complicated by the inaccessibility of tree root systems, its labour intensiveness and is often compounded by artefacts created by soil disturbance. Despite the fact that the elucidation of the patterns and controls of forest fine root turnover is of utmost importance for the development of realistic carbon cycle models, our knowledge of the contribution of fine root turnover to carbon and nutrient cycles in forests remains uncertain. This chapter will detail all major methods currently used for estimating fine root turnover and highlight their advantages, as well as drawbacks