Wood strength loss as a measure of decomposition in northern forest mineral soil

Jürgensen, Martin F.; Reed, David D.; Page‐Dumroese, Deborah S.; Laks, Peter E.; Collins, Anne; Mroz, Glenn D.; Degórski, Marek

doi:10.1016/j.ejsobi.2005.09.001

Cited by 42 publications

(43 citation statements)

References 24 publications

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“…They attributed these results to a high inverse correlation between soil moisture and soil temperature, but did not measure soil moisture levels. However, our results are in contrast to other studies conducted in mineral soil of forest, tundra and agricultural grassland ecosystems, where positive interactions between temperature and decomposition rates of standard OM material in mineral soil were found (e.g., Ineson et al 1988;Hopkins et al 1990;Jurgensen et al 2006, Drewnik 2006, Withington and Sanford 2007. These latter studies were conducted in ecosystems where soil moisture was usually not limiting for OM decomposition, while in dry ecosystems, such as the grasslands in our study, changes in soil moisture likely were more important for an alteration of OM decomposition rates than temperature.…”

Section: Grazing Effects On Standard Om Decompositioncontrasting

confidence: 85%

Effects of grazing and soil micro-climate on decomposition rates in a spatio-temporally heterogeneous grassland

2007

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Grazing and seasonal variation in precipitation and temperature are important controls of soil and plant processes in grasslands. As these ecosystems store up to 30% of the world's belowground carbon (C), it is important to understand how this variability affects mineral soil C pools/fluxes, and how C cycling might be affected by changes in precipitation and temperature, due to climate change. The aim of this study was to investigate the effects of grazing and differences in soil temperature and moisture on standard organic matter (OM) decomposition rates (cotton cloth) incubated in the top 10 cm soil of grasslands with variable topography in Yellowstone National Park (YNP) during the 2004 growing season. Grazing did not affect soil temperature, moisture, cotton cloth decomposition rates, soil bulk density, soil C and N concentrations, or soil C:N ratios. However, a large spatio-temporal variability in decomposition was observed: cotton cloth decomposition was positively related to soil moisture and soil C and N concentrations, and negatively to soil temperature. Highest decomposition rates were found in wetter slope bottom soils [season averages of decomposition given as rate of decomposition (cotton rotting rate=CRR)=23-26%] and lower rates in drier, hill-top soils (season averages, CRR=20%). Significantly higher decomposition rates were recorded in spring, early summer and early fall when soils were moist and cool (spring, CRR=25%; early summer, CRR =26%; fall, CRR = 20%) compared to midsummer (CRR=18%) when soils were dry and warm. Our findings suggest that climate-change related decreases in precipitation and increases in temperature predicted for North American grasslands would decrease soil OM decomposition in YNP, which contrasts the general assumption that increases in temperature would accelerate OM decomposition rates.

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Section: Grazing Effects On Standard Om Decompositioncontrasting

confidence: 85%

Effects of grazing and soil micro-climate on decomposition rates in a spatio-temporally heterogeneous grassland

2007

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“…In each subplot, twenty-five loblolly pine (Pinus taeda) wood stakes (free from defect) (2.2 cm x 2.2 cm x 20 cm) were buried vertically at the mineral soil and mulch interface following the fire just after mulch application (for details on installation method, see Jurgensen et al 2006). We retrieved buried loblolly pine stakes (n = 5 per subplot) on 17 June 2009 for measurement of microbial respiration of a common substrate, which we used as a short-term index of soil organic matter turnover.…”

Section: Microbial Respirationmentioning

confidence: 99%

Post-fire erosion control mulches alter belowground processes and nitrate reductase activity of a perennial forb, heartleaf arnica (Arnica cordifolia)

Berryman¹,

Morgan²,

Robichaud³

et al. 2014

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“…Litter decomposition is particularly influenced by decomposer organisms [39]. The conifer litter decomposes slower than that from hardwood species [40]. The soils of coniferous forests are characterized by low pH, and the decomposition of litter is mainly conducted by fungal organisms.…”

Section: Discussionmentioning

confidence: 99%

Soil Organic Matter Accumulation and Carbon Fractions along a Moisture Gradient of Forest Soils

Błońska

Lasota

2017

Forests

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Abstract:The aim of the study was to present effects of soil properties, especially moisture, on the quantity and quality of soil organic matter. The investigation was performed in the Czarna Rózga Reserve in Central Poland. Forty circular test areas were located in a regular grid of points (100 × 300 m). Each plot was represented by one soil profile located at the plot's center. Sample plots were located in the area with Gleysols, Cambisols and Podzols with the water table from 0 to 100 cm. In each soil sample, particle size, total carbon and nitrogen content, acidity, base cations content and fractions of soil organic matter were determined. The organic carbon stock (SOCs) was calculated based on its total content at particular genetic soil horizons. A Carbon Distribution Index (CDI) was calculated from the ratio of the carbon accumulation in organic horizons and the amount of organic carbon accumulation in the mineral horizons, up to 60 cm. In the soils under study, in the temperate zone, moisture is an important factor in the accumulation of organic carbon in the soil. The highest accumulation of carbon was observed in soils of swampy variant, while the lowest was in the soils of moist variant. Large accumulation of C in the soils with water table 80-100 cm results from the thick organic horizons that are characterized by lower organic matter decomposition and higher acidity. The proportion of carbon accumulation in the organic horizons to the total accumulation in the mineral horizons expresses the distribution of carbon accumulated in the soil profile, and is a measure of quality of the organic matter accumulated. Studies have confirmed the importance of moisture content in the formation of the fractional organic matter. With greater soil moisture, the ratio of humic to fulvic acids (HA/FA) decreases, which may suggest an increase in carbon mobility in soils.

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Wood strength loss as a measure of decomposition in northern forest mineral soil

Cited by 42 publications

References 24 publications

Effects of grazing and soil micro-climate on decomposition rates in a spatio-temporally heterogeneous grassland

Effects of grazing and soil micro-climate on decomposition rates in a spatio-temporally heterogeneous grassland

Post-fire erosion control mulches alter belowground processes and nitrate reductase activity of a perennial forb, heartleaf arnica (Arnica cordifolia)

Soil Organic Matter Accumulation and Carbon Fractions along a Moisture Gradient of Forest Soils

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