Effects of Tillage and Residue Management on Soil Organic Carbon and Total Nitrogen in the North China Plain

Hou, Ruixing; Ouyang, Zhu; Li, Yunsheng; Tyler, Donald D.; Li, Fadong; Wilson, George Grafton

doi:10.2136/sssaj2011.0107

Cited by 65 publications

(31 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the present studied field, Hou et al. () observed that wheat yield tended to be lower under NT than CT from 2004 to 2009. Based on the analysis of wheat yield components, Kumudini et al.…”

Section: Introductionmentioning

confidence: 49%

Is the change of winter wheat yield under warming caused by shortened reproductive period?

Hou¹,

Ouyang²,

Yunsheng³

et al. 2012

Ecology and Evolution

Self Cite

View full text Add to dashboard Cite

Previous reports from laboratory-controlled experiments and models considered that a shorter reproductive period could be the main reason for wheat yield reduction in the warmer world. However, this conclusion needs to be proved carefully by field-scale experiments. In this study, a field-scale continuous open-warming experiment was conducted to quantify the adjustment of winter wheat growth and yield under conventional tillage (CT) and no-till (NT) systems in the North China Plain (NCP). Canopy temperatures were warmed using infrared heaters between 1.0 and 1.6°C (daytime and nighttime, respectively) above the control. Wheat yields under CT were not significantly reduced over the two seasons (2010 and 2011), but yields under NT were 3.3% and 6.1% lower, respectively. The growing seasons for both CT and NT were shortened 6 days in 2010 and 11 days in 2011; however, the reproductive periods were maintained. The shortened days were due to a significantly shorter springtime re-greening stage followed by minimal changes in other phenological stages (jointing, flag completed, heading, anthesis, and grain-filling). The temporal advance by warming resulted in lower growing-season mean air temperatures (MAT) for warmed plots than the control from 0.23 to 4.22°C for the same subsequent phenological stages. Warming increased the number of tillers m−2 and kernel weight, but tended to decrease the number of spikes m−2 in the two tillage systems. The heavier kernels offset the yield reduction from smaller number of spikes. Warming increased the wheat aboveground biomass from 10% to 20% suggesting the potential to sequester more CO2. This study suggests that winter wheat might adjust its growth (shortened vegetative period to maintain reproductive period) to partly compensate for the negative effects from global warming in this temperate irrigated cropland.

show abstract

Section: Introductionmentioning

confidence: 49%

Is the change of winter wheat yield under warming caused by shortened reproductive period?

Hou¹,

Ouyang²,

Yunsheng³

et al. 2012

Ecology and Evolution

Self Cite

View full text Add to dashboard Cite

show abstract

“…No-till (No-Till) farming sequesters more C close to the soil surface than does conventionally tilled (Till) farming, whereas Till stores more C deeper in the profile (Baker et al, 2007;Hou et al, 2012). However, the fate of this surface-sequestered C in No-Till soil is unclear under warming and post-warming conditions.…”

Section: Introductionmentioning

confidence: 99%

Lasting effect of soil warming on organic matter decomposition depends on tillage practices

Hou

Ouyang

Dorodnikov

et al. 2016

Soil Biology and Biochemistry

Self Cite

View full text Add to dashboard Cite

a b s t r a c tGlobal warming accelerates soil organic matter (SOM) decomposition with strong feedback to atmospheric CO 2 . Such an effect should be especially important for no-till agricultural practices, where SOM accumulates in the topsoil as compared with conventional tillage. We incubated soil samples (0e5 cm) at three temperature levels (15, 21 and 27 C) from long-term till and no-till systems that were in situ warmed and non-warmed to assess the temperature sensitivity of CO 2 efflux, labile organic carbon and extracellular enzyme activities. Thermal adaptation to prolonged warming was observed resulting in a lasting effect on SOM decomposition. On average, 26, 14 and 12% more CO 2 was emitted at each incubation temperature from the warmed soils compared to the non-warmed soils. The Q 10 value was lower for the warmed than the non-warmed soils. Soil microbial biomass C and dissolved organic C declined with warming. The activities of three extracellular enzymes, b-glucosidase, chitinase, and sulfatase, were higher under warming and no-till as compared to non-warmed and tilled soil. We concluded that the increased SOM decomposition due to the stimulation of microorganisms by warming was long-lasting. Predictions of C accumulation in the topsoil by no-till farming should be taken with caution, as this C pool is especially vulnerable to global warming.

show abstract

“…Considerable interest has recently been generated by the assessment of spatial distributions and variations in SOC concentrations and stocks in various ecosys-tems at site, local, slope, watershed, regional, continental, and global scales (Burnham and Sletten, 2010;Han et al, 2010;Hou et al, 2012;Huo et al, 2013;Jimenez et al, 2008;Lal, 2004b;Liu et al, 2011;Tornquist et al, 2009;Van Minnen et al, 2009;Wang et al, 2003Wang et al, , 2010a. These studies have enriched the understanding of the patterns and control of SOC distributions at these scales.…”

mentioning

confidence: 99%

Soil Organic Carbon Stocks in Deep Soils at a Watershed Scale on the Chinese Loess Plateau

Wang

Han

Jing-bo

et al. 2015

Soil Science Soc of Amer J

View full text Add to dashboard Cite

An accurate evaluation of soil organic C (SoC) stocks is important to C management and to understanding fully the role of soils in the C cycle. However, SoC stocks in deep soils and the factors that affect them have been largely ignored. We measured SoC stocks and other soil properties to a depth of 500 cm (n = 73) under three land uses in the Lao ye Man Qu watershed on the Chinese Loess Plateau. Similar patterns in the vertical distributions of SoC stocks were found under cropland, grassland, and shrubland. However, for the 0-to 200-cm soil layer, SoC stocks were significantly lower under shrubland than under either cropland or grassland. The SoC stocks under cropland, grassland, and shrubland in the 0-to 100-cm layer were 2.64 ± 0.67, 2.50 ± 0.69, and 1.99 ± 0.22 kg m −2 , respectively; in the 0-to 500-cm layer they were 8.34 ± 2.26, 8.37 ± 2.01, and 7.26 ± 1.00 kg m −2 , respectively. Significantly higher SoC stocks occurred in loamy than sandy soils (P < 0.01), and they were lower at the mid than at the upper and lower slope positions. However, SoC stocks were similar in sunlit and shaded soils. Pearson correlation analysis indicated that land use, soil texture, and soil water content significantly affected SoC stocks in each 100-cm soil layer to a depth of 500 cm. Effects of topographic features and pH varied with increasing depth. A considerable amount of SoC was stored in deep soils, indicating the SoC content dependence on time and depth. This information is essential for evaluating C fluxes, estimating C stocks, and for managing the C cycles in regions around the world with deep soils.

show abstract

Effects of Tillage and Residue Management on Soil Organic Carbon and Total Nitrogen in the North China Plain

Cited by 65 publications

References 50 publications

Is the change of winter wheat yield under warming caused by shortened reproductive period?

Is the change of winter wheat yield under warming caused by shortened reproductive period?

Lasting effect of soil warming on organic matter decomposition depends on tillage practices

Soil Organic Carbon Stocks in Deep Soils at a Watershed Scale on the Chinese Loess Plateau

Contact Info

Product

Resources

About