Soil CO<sub>2</sub>emission and its relationship to soil properties under different tillage systems

Lü, Xianguo; Lu, Xingneng; Liao, Yuncheng

doi:10.1080/03650340.2015.1115838

Cited by 12 publications

(5 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Experiments on C m have been conducted in different ecosystems (e.g. agricultural system, natural forest ecosystem, and natural grass system), but effects of long‐term PEC cultivation on C m in bulk and rhizosphere soils have not been well examined (Lu et al, 2015; Nicole et al, 2004; Wei et al, 2017). In this study, long‐term cultivation of PECs accelerated organic C accumulation by decreasing C m .…”

Section: Discussionmentioning

confidence: 99%

Long‐term cultivation of Miscanthus and switchgrass accelerates soil organic carbon accumulation by decreasing carbon mineralization in infertile red soil

Hou

et al. 2022

GCB Bioenergy

View full text Add to dashboard Cite

Perennial energy crops (PECs) such as Miscanthus spp. and switchgrass (Panicum virgatum L.) may have particular influence on microbial communities and their functions in soil organic carbon (C) utilization and mineralization (Cm). In this study, long‐term effects of PECs on Cm and soil hydrolase activities were examined in bulk and rhizosphere soils of Miscanthus and switchgrass grown on a red soil in South China. Long‐term cultivation (10 years) of PECs led to increases in soil organic C (SOC) and the absolute Cm of bulk and rhizosphere soils. Total Cm was correlated with dissolved organic C and dissolved organic nitrogen (N) in red soils. The specific Cm in bulk soils of switchgrass and Miscanthus were decreased by 11.73% and 20.67% comparing with the control group, respectively. Cultivation of PECs led to a relatively high C/N ratio. There was a difference in priming effect on activities of β‐glucosidase (BG), leucine amin peptidase, N‐acetyl‐β‐glucosaminidase (NAG), and phosphatase between rhizosphere and bulk soils. Compared with the control without PECs, BG activity did not change significantly in bulk soils of PECs, whereas NAG activity decreased significantly. Soil microorganisms were generally limited by soil C and phosphorus (P) in the red soil. The C and P limitations were significantly linearly related with relative Cm (p < 0.05). Phosphorus limitations in microbial communities were lower with PECs than in the control, indicating that cultivation of PECs could provide an optimal nutrient environment for both plants and microorganisms. Thus, long‐term cultivation of PECs increased SOC content but decreased specific Cm rates. However, because C and P limitations remain for plants and soil microbial communities, optimum fertilization is also necessary for sustainable growth of PECs on red soils.

show abstract

Section: Discussionmentioning

confidence: 99%

Long‐term cultivation of Miscanthus and switchgrass accelerates soil organic carbon accumulation by decreasing carbon mineralization in infertile red soil

Hou

et al. 2022

GCB Bioenergy

View full text Add to dashboard Cite

show abstract

“…The no-till benefits of reduced R eco and R h over the spring garbanzo and the winter wheat fields was primarily due to the fact that no-till practice reduces soil-residue contact, and slows down SOC oxidation and residue decomposition (Kessavalou et al, 1998;Koga et al, 2003;Dong et al, 2008;Li et al, 2010;Chang et al, 2013;Gollany, 2016;Hu et al, 2016;Lu et al, 2016). Comparing CropSyst to the DayCENT model showed that over the winter wheat field, the R h difference between the two sites in CropSyst is comparable to the DayCENT model simulations as reported by Chang et al (2013).…”

Section: Tillage Practice Effects On Annual Cropping Areamentioning

confidence: 49%

Carbon and Water Budgets in Multiple Wheat-Based Cropping Systems in the Inland Pacific Northwest US: Comparison of CropSyst Simulations with Eddy Covariance Measurements

et al. 2017

View full text Add to dashboard Cite

Accurate carbon and water flux simulations for croplands are greatly dependent on high quality representation of management practices and meteorological conditions, which are key drivers of the surface-atmosphere exchange processes. Fourteen site-years of carbon and water fluxes were simulated using the CropSyst model over four agricultural sites in the inland Pacific Northwest (iPNW) US from October 1, 2011 to September 30, 2015. Model performance for field-scale net ecosystem exchange of CO 2 (NEE) and evapotranspiration (ET) was evaluated by comparing simulations with long-term eddy covariance measurements. The model captured the temporal variations of NEE and ET reasonably well with an overall r of 0.78 and 0.80, and a low RMSE of 1.82 g C m −2 d −1 and 0.84 mm d −1 for NEE and ET, respectively. The model slightly underestimated NEE and ET by 0.51 g C m −2 d −1 and 0.09 mm d −1 , respectively. ET simulations showed better agreement with eddy covariance measurements than NEE. The model performed much better for the sites with detailed initial conditions (e.g., SOC content) and management practice information (e.g., tillage type). The CropSyst results showed that the winter wheat fields could be annual net carbon sinks or close to neutral with the net ecosystem carbon balance (NECB) ranging from 92 to −17 g C m −2 , while the spring crop fields were net carbon sources or neutral with an annual NECB of −327 to −3 g C m −2 . Simulations for the paired tillage sites showed that the no-till site resulted in lower CO 2 emissions for the crop rotations of winter wheat-spring garbanzo, but had higher carbon loss into the atmosphere for spring canola compared to the conventional tillage site. Water budgets did not differ significantly between the two tillage systems. Winter wheat in the high-rainfall area had higher crop yields and water use efficiency but emitted larger amounts of CO 2 into the atmosphere than in the low-rainfall area. Based Chi et al.Agricultural Carbon and Water Budgets on model evaluations in this study, CropSyst appears promising as a tool to simulate field-scale carbon and water budgets and assess the effects of different management practices and local meteorological conditions for the wheat-based cropping systems in this region.

show abstract

“…Lu et al [44] argue that the 6 years of conventional tillage and no-till practices, conducted between the growth of wheat and corn, resulted in significant differences in the soil properties not only in their mean values but also in their temporal variability. The NT treatment resulted in lower soil CO2 emissions when compared to the conventional tillage treatment.…”

Section: Discussionmentioning

confidence: 99%

Long-Term Effect of Tillage Systems on the Planosol Physical Properties, CO2 Emissions and Spring Barley Productivity

Sinkevičienė,

Romaneckas,

Jackevičienė

et al. 2024

Preprint

View full text Add to dashboard Cite

Soil tillage intensity influences the distribution of nutrients, and soil’s physical and me-chanical properties, as well as gas flows. The impact of reduced tillage on these indices in spring barley cultivation is still insufficient and requires more analysis on a global scale. This study was carried out at Vytautas Magnus University, Agriculture Academy (Lithu-ania) in 2022–2023. The aim of the investigation was to determine the effect of the tillage systems on the soil temperature, moisture content, CO2 respiration and concentration in spring barley cultivation limited by the semi-humid subarctic climate. Based on a long-term tillage experiment, five tillage systems were tested: deep and shallow mold-board ploughing, deep cultivation-chiselling, shallow cultivation-chiselling, and no-tillage. Shallow ploughing technology was found to be better at conserving soil moisture and maintaining a higher temperature. Deep cultivation had a lower moisture content and lower soil temperature. Shallow cultivation fields in most cases increased CO2 emissions and CO2 concentration. The results show that in direct sowing fields, most cases had a positive effect on crop density. Direct sowing fields resulted in significantly lower grain yields of spring barley in the years studied.

show abstract

Soil CO₂emission and its relationship to soil properties under different tillage systems

Cited by 12 publications

References 35 publications

Long‐term cultivation of Miscanthus and switchgrass accelerates soil organic carbon accumulation by decreasing carbon mineralization in infertile red soil

Long‐term cultivation of Miscanthus and switchgrass accelerates soil organic carbon accumulation by decreasing carbon mineralization in infertile red soil

Carbon and Water Budgets in Multiple Wheat-Based Cropping Systems in the Inland Pacific Northwest US: Comparison of CropSyst Simulations with Eddy Covariance Measurements

Long-Term Effect of Tillage Systems on the Planosol Physical Properties, CO2 Emissions and Spring Barley Productivity

Contact Info

Product

Resources

About

Soil CO2emission and its relationship to soil properties under different tillage systems

Cited by 12 publications

References 35 publications

Long‐term cultivation of Miscanthus and switchgrass accelerates soil organic carbon accumulation by decreasing carbon mineralization in infertile red soil

Long‐term cultivation of Miscanthus and switchgrass accelerates soil organic carbon accumulation by decreasing carbon mineralization in infertile red soil

Carbon and Water Budgets in Multiple Wheat-Based Cropping Systems in the Inland Pacific Northwest US: Comparison of CropSyst Simulations with Eddy Covariance Measurements

Long-Term Effect of Tillage Systems on the Planosol Physical Properties, CO2 Emissions and Spring Barley Productivity

Contact Info

Product

Resources

About

Soil CO₂emission and its relationship to soil properties under different tillage systems