14C distribution in soil organisms and respiration after the decomposition of crop residue in conventional tillage and no-till agroecosystems at Georgia Piedimont

Fu, Shenglei; Coleman, David C.; Schartz, Rita J.; Potter, Robert; Hendrix, Paul F.; Crossley, D. A.

doi:10.1016/s0167-1987(00)00133-1

Cited by 26 publications

(10 citation statements)

References 31 publications

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“…The flux of C from hurricane debris into the soil C pool was also probably quite low. Pulse labeling studies conducted elsewhere using 14 C-labelled organic matter suggest that only a small fraction of decaying organic matter is actually transferred to soil C pools, with the majority lost as CO 2 (Fu et al 2000;Kisselle et al 2001).…”

Section: Root Dynamics Following Multiple Disturbancesmentioning

confidence: 99%

A decade of belowground reorganization following multiple disturbances in a subtropical wet forest

2009

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Humid tropical forests are dynamic ecosystems that experience multiple and overlapping disturbance events that vary in frequency, intensity, and spatial extent. Here we report the results of a 10-year study investigating the effects of forest clearing and multiple hurricanes on ecosystem carbon reservoirs, nutrient pools and vegetation. The aboveground plant community was most heavily affected by multiple disturbances, with the 9-year-old stands showing high rates of hurricane-induced mortality relative to surrounding forest. Belowground pools were less affected. Live fine root biomass fluctuated in response to multiple disturbances, but returned to pre-disturbance levels after 10 years. Soil C was resilient to clearing and hurricanes, probably due to the large pool size and high clay content. Soil P fluctuated over time, declining during periods of rapid plant recovery and growth. With the exception of K, base cations recovered within 2 years following clearing and showed little response to hurricane disturbance.

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Section: Root Dynamics Following Multiple Disturbancesmentioning

confidence: 99%

A decade of belowground reorganization following multiple disturbances in a subtropical wet forest

2009

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“…Disk harrowing may also increase the rate of organic matter decomposition by burying savannah residues into the soil, thus resulting in enhanced availability of fresh organic matter to soil micro-organisms (e.g. Thorburn et al, 2001), and possibly enhanced SOM decomposition as a result of the 'priming effect' (stimulation of the microbial activity through the addition of an easily available C source; Fu et al, 2000;Kuzyakov, 2006). However, aboveground savannah residues represented a modest input of organic matter to the soil, evaluated at 231 g DM m À2 (%115 g C m À2 ), representing only 27% of total (above-and below-ground) savannah residues.…”

Section: Effect Of Disk Harrowing On Soil Co 2 Effluxesmentioning

confidence: 99%

Soil CO2 effluxes, soil carbon balance, and early tree growth following savannah afforestation in Congo: Comparison of two site preparation treatments

Nouvellon

Epron

Kinana

et al. 2008

Forest Ecology and Management

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“…Previous studies showed that no-tillage with residue cover reduced CO 2 emission by reducing soil disturbance (Prior et al, 2004;Bauer et al, 2006;Curtin et al, 2000;Ussiri and Lal, 2009). These results also suggest that crop residues incorporated into soil by tillage significantly increased CO 2 emissions (case of TW during wheat growing period), which may have resulted from the abundance of carbon in maize and wheat straw, and close contact between residues and micro-organisms when residues are incorporated into the soil (Fu et al, 2000) releasing carbon to the atmosphere during straw decomposition (Nie et al, 2007). In contrast, when the residues were left as mulch on the soil surface, the contact between residue and soil organisms was restricted.…”

Section: Soil Respiration Rate and Its Seasonal Variationmentioning

confidence: 75%

Effect of conservation tillage on soil respiration rate and water content under wheat/maize system in North China Plain

Houssou¹,

Liang²,

Gao³

et al. 2016

J. Soil Sci. Environ. Manage.

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Conservation tillage management can improve soil moisture and reduce or increase soil CO 2 emission. Soil CO 2 flux rate, soil moisture, and the relationship between soil respiration and temperature on North China Plain throughout a 3-year period was determined. Tillage systems were rotary tillage without crop residues (CT), rotary tillage with crop residues incorporated into the soil in winter, and no-tillage with crop residues used as mulch in summer (TW), and rotary tillage with crop residues incorporated into the soil in summer and no-tillage with crop residues used as mulch in winter (TS). Soil respiration was measured with a LI-8100 and the gravimetric method was used to identify soil water content. Soil temperature at 5 cm depth also was measured directly by Li-8100 through a temperature sensing probe during the CO 2 measurement time. The crops were winter wheat (Triticum aestivum L) and summer maize (Zea mays L). During the wheat and maize growing period, TS reduced CO 2 emission when compared with CT and TW. For the first two years of this study, CT and TW had higher soil water content when compared with TS. Thus, this study suggests that conservation tillage can be useful for North China plain farmers; however, TW emitted CO 2 at the highest rate level, therefore further research is needed on long term effects of those three tillage practices on respiration rate and soil moisture in that area.

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14C distribution in soil organisms and respiration after the decomposition of crop residue in conventional tillage and no-till agroecosystems at Georgia Piedimont

Cited by 26 publications

References 31 publications

A decade of belowground reorganization following multiple disturbances in a subtropical wet forest

A decade of belowground reorganization following multiple disturbances in a subtropical wet forest

Soil CO2 effluxes, soil carbon balance, and early tree growth following savannah afforestation in Congo: Comparison of two site preparation treatments

Effect of conservation tillage on soil respiration rate and water content under wheat/maize system in North China Plain

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