Soil CO2 efflux across four age classes of plantation loblolly pine (Pinus taeda L.) on the Virginia Piedmont

Wiseman, P. Eric; Seiler, John R.

doi:10.1016/j.foreco.2004.01.017

Cited by 117 publications

(91 citation statements)

References 35 publications

(36 reference statements)

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“…In the present study, the SBR rate showed a markedly increasing trend with the reclamation age. The same result has been reported in the studies of Wiseman et al [59] and Mukhopadhyay et al [29] on a chronosequence of reclaimed mine soils. During the agricultural use of reclaimed soils, on the one hand, the amount of labile organic carbon (the substrate of microbes) in the soil rapidly increases; on the other hand, the soil's physical properties, including its structure, water retention and aeration, improve.…”

Section: Discussionsupporting

confidence: 87%

Carbon Dynamics of Reclaimed Coal Mine Soil under Agricultural Use: A Chronosequence Study in the Dongtan Mining Area, Shandong Province, China

Yu-le

et al. 2017

Sustainability

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Soil organic carbon (SOC) plays an essential role in the early stages of pedogenisis and ecological restoration in reclaimed mine soils. Dynamic changes in the SOC content are essential for assessing the quality of reclaimed mine soils and the effect of ecological restoration. To objectively assess the carbon dynamics of reclaimed soils, we selected the surface (0-20 cm) soil of farmland under agricultural use (soybean-wheat rotation) from a reclamation chronosequence (R4: 4 years of reclamation, R7: 7 years of reclamation, R10: 10 years of reclamation and R13: 13 years of reclamation) in the Dongtan Mining Area, Shandong Province, China. The adjacent normal, unaffected farmland was used as a control (CK). The results showed that the SOC content gradually increased with the reclamation age until it reached 7.98 g·kg −1 for R13, which accounted for 76% of that of the CK. However, the total carbon contents of the reclaimed soils did not significantly differ from and even appeared higher than that of the CK. This is mainly because the inorganic carbon contents of the reclaimed soils ranged from 2.98 to 12.61 g·kg −1 , all of which were significantly higher than the 0.87 g·kg −1 obtained for the CK. The microbial biomass carbon (MBC) content and the microbial quotient significantly increased with the reclamation age of the soil, and both parameters were markedly higher for R13 than for the CK. The dissolved organic carbon (DOC) content and its ratio to the SOC were significantly higher for R4-R13 than for the CK and DOC/SOC gradually decreased with the reclamation age. Both the reclamation age and the temperature had positive effects on the soil basal respiration (SBR). The SBR rate constantly increased with the reclamation age and was markedly higher at 25 • C than at 15 • C. The temperature sensitivity (Q 10 ) of the SBR showed a clearly decreasing trend for the reclamation chronosequence, but its value remained higher for R13 than for the CK (2.37). The metabolic quotient constantly decreased with the reclamation age, which suggests that the survival pressure imposed on soil microbes by the soil environment gradually decreased. These results indicate that it takes a long time for organic carbon to accumulate in reclaimed mine soil and that rational agricultural use contributes to sustained improvement of the quality of reclaimed soil.

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Section: Discussionsupporting

confidence: 87%

Carbon Dynamics of Reclaimed Coal Mine Soil under Agricultural Use: A Chronosequence Study in the Dongtan Mining Area, Shandong Province, China

Yu-le

et al. 2017

Sustainability

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“…Exponential regressions have often been used to describe the relationship between SR and soil temperature at seasonal scale when soil moisture or other factors are not limiting (Buchmann 2000;Janssens and Pilegaard 2003;Reth et al 2004). It is clear that SR responds positively to temperature in a number of systems (Davidson et al 2000;Fang and Moncrieff 2001;Richard et al 2004;Wiseman and Seiler 2004). Increasing temperatures can activate dormant microbes and increase microbial species richness, which potentially broadened the mineralizable carbon pools , thus promoting microbial respiration.…”

Section: Discussionmentioning

confidence: 99%

Soil temperature and biotic factors drive the seasonal variation of soil respiration in a maize (Zea mays L.) agricultural ecosystem

Han

Zhou

et al. 2006

Plant Soil

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The diurnal and seasonal variation of soil respiration (SR) and their driving environmental factors were studied in a maize ecosystem during the growing season 2005. The diurnal variation of SR showed asymmetric patterns, with the minimum occurring around early morning and the maximum around 13:00 h. SR fluctuated greatly during the growing season. The mean SR rate was 3.16 lmol CO 2 m -2 s -1 , with a maximum of 4.87 lmol CO 2 m -2 s -1 on July 28 and a minimum of 1.32 lmol CO 2 m -2 s -1 on May 4. During the diurnal variation of SR, there was a significant exponential relationship between SR and soil temperature (T) at 10 cm depth: SR ¼ ae bT . At a seasonal scale, the coefficient a and b fluctuated because the biomass (B) increased a, and the net primary productivity (NPP) of maize markedly increased b of the exponential equation. Based on this, we developed the equationto estimate the magnitude of SR and to simulate its temporal variation during the growth season of maize. Most of the temporal variability (93%) in SR could be explained by the variations in soil temperature, biomass and NPP of maize. This model clearly demonstrated that soil temperature, biomass and NPP of maize combined to drive the seasonal variation of SR during the growing season. However, only taking into account the influence of soil temperature on SR, an exponential equation over-or underestimated the magnitude of SR and resulted in an erroneous representation of the seasonal variation in SR. Our results highlighted the importance of biotic factors for the estimation of SR during the growing season. It is suggested that the models of SR on agricultural sites should not only take into account the influence of soil temperature, but also incorporate biotic factors as they affect SR during the growing season.

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“…Soil temperature and soil moisture are recognized as the key environmental factors responsible for variation in soil respiration (Davidson and others 1998;Rayment and Jarvis 2000;Han and others 2007). Seasonal changes of these factors affect the productivity of terrestrial ecosystems and the decomposition rate of soil organic matter, thereby driving the temporal variations of soil respiration at individual sites (Wiseman and Seiler 2004;Jin and others 2009). Results from many studies have shown that soil respiration is exponentially correlated with changes in soil temperature when water is not limited at different temporal scales (Fang and Moncrieff 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Results from many studies have shown that soil respiration is exponentially correlated with changes in soil temperature when water is not limited at different temporal scales (Fang and Moncrieff 2001). However, soil respiration is also strongly influenced by soil moisture, and both soil saturation and drought suppress soil CO 2 efflux (Wiseman and Seiler 2004).…”

Section: Introductionmentioning

confidence: 99%

Winter Soil Respiration from Different Vegetation Patches in the Yellow River Delta, China

Yang

et al. 2012

Environmental Management

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Vegetation type and density exhibited a considerable patchy distribution at very local scales in the Yellow River Delta, due to the spatial variation of soil salinity and water scarcity. We proposed that soil respiration is affected by the spatial variations in vegetation type and soil chemical properties and tested this hypothesis in three different vegetation patches (Phragmites australis, Suaeda heteroptera and bare soil) in winter (from November 2010 to April 2011). At diurnal scale, soil respiration all displayed single-peak curves and asymmetric patterns in the three vegetation patches; At seasonal scale, soil respiration all declined steadily until February, and then increased to a peak in next April. But, the magnitude of soil respiration showed significant differences among the three sites. Mean soil respiration rates in winter were 0.60, 0.45 and 0.17 lmol CO 2 m -2 s -1 for the Phragmites australis, Suaeda heteroptera and bare soil, respectively. The combined effect of soil temperature and soil moisture accounted for 58-68 % of the seasonal variation of winter soil respiration. The mean soil respiration revealed positive and linear correlations with total N, total N and SOC storages at 0-20 cm depth, and plant biomass among the three sites. We conclude that the patchy distribution of plant biomass and soil chemical properties (total C, total N and SOC) may affect decomposition rate of soil organic matter in winter, thereby leading to spatial variations in soil respiration.

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Soil CO2 efflux across four age classes of plantation loblolly pine (Pinus taeda L.) on the Virginia Piedmont

Cited by 117 publications

References 35 publications

Carbon Dynamics of Reclaimed Coal Mine Soil under Agricultural Use: A Chronosequence Study in the Dongtan Mining Area, Shandong Province, China

Carbon Dynamics of Reclaimed Coal Mine Soil under Agricultural Use: A Chronosequence Study in the Dongtan Mining Area, Shandong Province, China

Soil temperature and biotic factors drive the seasonal variation of soil respiration in a maize (Zea mays L.) agricultural ecosystem

Winter Soil Respiration from Different Vegetation Patches in the Yellow River Delta, China

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