Effects of forest type and stand age on litterfall quality and soil N dynamics in Shikoku district, southern Japan

Inagaki, Yoshiyuki; Miura, Satoru; Kohzu, Ayato

doi:10.1016/j.foreco.2004.07.029

Cited by 66 publications

(49 citation statements)

References 39 publications

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“…The C and N content of needles was measured using an NC analyzer. We used the following chemical data as described by Igahara and Nakagawa (2002) and Inagaki et al (2004) for branches, other materials, and other species: C content, 53.4, 53.2, and 51.9%; N content, 0.3, 1.0, and 1.5%, respectively.…”

Section: Litterfall Measurementmentioning

confidence: 99%

Soil nitrogen dynamics during stand development after clear-cutting of Japanese cedar (Cryptomeria japonica) plantations

Fukushima

Tateno

Tokuchi

2011

Journal of Forest Research

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We examined soil N dynamics, including inorganic N concentration, net N transformation rates, and estimated plant N uptake (EPNU) from soil N budgets, and litterfall inputs, in five Japanese cedar plantation stands of different ages (5, 16, 31, 42, and 89 years) in the Mt Gomadan Experimental Forest (GEF). Net soil N mineralization and nitrification rates did not differ significantly between the youngest and oldest stands; soil moisture and inorganic N concentration were higher in the youngest stand. The EPNU was highest in the 16-year-old stand and lowest in the 31-year-old stand, and had a significant negative correlation with litter C:N ratio. The oldest (89-year-old) stand had a higher soil C:N ratio, lower proportion of nitrification rate to mineralization rate (%NIT), and higher estimated plant NH 4? uptake than did the other stands, indicating that changes of soil organic matter quality can alter soil N dynamics. These results suggest that as a Japanese cedar plantation develops, soil N dynamics can be altered by the quantity and quality of input litter and soil organic matter, and can generate the imbalance between N supply from soil and N demand by plant.

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Section: Litterfall Measurementmentioning

confidence: 99%

Soil nitrogen dynamics during stand development after clear-cutting of Japanese cedar (Cryptomeria japonica) plantations

Fukushima

Tateno

Tokuchi

2011

Journal of Forest Research

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“…Taylor et al 1991;Prescott 2002;Inagaki et al 2004;Miyamoto and Hiura 2008) and soil conditions (Bengtsson et al 2003;Booth et al 2005;Kooijman et al 2008). Distinctive differences were found between conifers and hardwood species with regard to their effects on stocks, distribution and mineralization rates of soil N (Jerabkova et al 2006;Joshi et al 2006;Inagaki et al 2004). In addition, N 2 O emissions were significantly higher in deciduous than in coniferous forests (Ambus et al 2006;Butterbach-Bahl et al 2002).…”

mentioning

confidence: 99%

Variability of soil N cycling and N2O emission in a mixed deciduous forest with different abundance of beech

2010

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The mixture of other broadleaf species into beech forests in Central Europe leads to an increase of tree species diversity, which may alter soil biochemical processes. This study was aimed at 1) assessing differences in gross rates of soil N cycling among deciduous stands of different beech (Fagus sylvatica L.) abundance in a limestone area, 2) analyzing the relationships between gross rates of soil N cycling and forest stand N cycling, and 3) quantifying N 2 O emission and determining its relationship with gross rates of soil N cycling. We used 15 N pool dilution techniques for soil N transformation measurement and chamber method for N 2 O flux measurement. Gross rates of mineral N production in the 0-5 cm mineral soil increased across stands of decreasing beech abundance and increasing soil clay content. These rates were correlated with microbial biomass which, in turn, was influenced by substrate quantity, quality and soil fertility. Leaf litter-N, C:N ratio and base saturation in the mineral soil increased with decreasing beech abundance. Soil mineral N production and assimilation by microbes were tightly coupled, resulting in low N 2 O emissions. Annual N 2 O emissions were largely contributed by the freezethaw event emissions, which were correlated with the amount of soil microbial biomass. Our results suggest that soil N availability may increase through the mixture of broadleaf species into beech forests.

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“…This type of distribution is similar to the soils in wooded areas in temperate regions which are characterized by thick litter that forms from an accumulation of dead leaves at the end of fall [49][50][51][52]. Given that the main source of SOC is litter (e.g., dead leaves, twigs, stems) or the decomposition of fine rootlets, higher concentrations will naturally occur in the surface layers [53][54][55]. This ensures a constant input of SOC and allows it to be stored, in particular in a form that is not very soluble or humified [55,56].…”

Section: Variability In Soc and Nmentioning

confidence: 67%

“…Given that the main source of SOC is litter (e.g., dead leaves, twigs, stems) or the decomposition of fine rootlets, higher concentrations will naturally occur in the surface layers [53][54][55]. This ensures a constant input of SOC and allows it to be stored, in particular in a form that is not very soluble or humified [55,56]. However, the storage of C in the deeper layers of the profile (>60 cm) constitutes a negligible input.…”

Section: Variability In Soc and Nmentioning

confidence: 99%

Distribution of Soil Organic Carbon in Riparian Forest Soils Affected by Frequent Floods (Southern Québec, Canada)

Saint-Laurent

Gervais-Beaulac

Paradis

et al. 2017

Forests

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Abstract:Measuring soil organic carbon (SOC) in riparian forest soils affected by floods is crucial for evaluating their concentration and distribution along hydrological gradients (longitudinal and transversal). Hydromorphological factors (e.g., sedimentation vs. erosion, size of floodplain, flood recurrence) may be the cause of major variations in the concentration of organic matter and SOC in soils and could have a direct impact on C levels in soil profiles. For this study, SOC concentrations were assessed in riparian soils collected along transects perpendicular to the riverbanks which cross through inundated and non-inundated zones. Other soil properties (e.g., acidity, nitrogen, texture, bulk density) that may affect the concentration of SOC were also considered. The main purpose of this study was to assess SOC concentrations in soils subjected to flooding with those outside the flood zones, and also measure various soil properties (in surface soils and at various depths ranging from 0 to 100 cm) for each selected area. Across the various areas, SOC shows marked differences in concentration and spatial distribution, with the lowest values found in mineral soils affected by successive floods (recurrence of 0-20 years). SOC at 0-20 cm in depth was significantly lower in active floodplains (Tukey HSD test), with average values of 2.29 ± 1.64% compared to non-inundated soils (3.83 ± 2.22%). The proportion of C stocks calculated in soils (inundated vs. non-inundated zones) was significantly different, with average values of 38.22 ± 10.40 and 79.75 ± 29.47 t·ha −1 , respectively. Flood frequency appears to be a key factor in understanding the low SOC concentrations in floodplain soils subjected to high flood recurrence (0-20 years).

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Effects of forest type and stand age on litterfall quality and soil N dynamics in Shikoku district, southern Japan

Cited by 66 publications

References 39 publications

Soil nitrogen dynamics during stand development after clear-cutting of Japanese cedar (Cryptomeria japonica) plantations

Soil nitrogen dynamics during stand development after clear-cutting of Japanese cedar (Cryptomeria japonica) plantations

Variability of soil N cycling and N2O emission in a mixed deciduous forest with different abundance of beech

Distribution of Soil Organic Carbon in Riparian Forest Soils Affected by Frequent Floods (Southern Québec, Canada)

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