Long-Term Effect of No-Tillage on Soil Organic Carbon Fractions in a Continuous Maize Cropping System of Northeast China

Huang, Shan; Sun, Yanni; Wang, Rui; Wu-ren, Liu; Zhang, Weijian

doi:10.1016/s1002-0160(10)60016-1

Cited by 50 publications

(29 citation statements)

References 40 publications

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“…Studies have shown that conservation tillage methods (shallow tillage, reduced tillage and no‐tillage) are capable of conserving soil organic carbon (Baker et al ., ; Chivenge et al ., ; Sommer et al ., ). However, some studies have shown that although the use of NT practices can increase the C content stored in surface residues and in the top few centimetres of the soil, they do not necessarily increase overall SOC storage (Yang & Wander, ; Huang et al ., ). Our results indicate when straw was returned, the SOC content of NT was less than that of other tillage treatments (Figure ) in the surface soil (0–20 cm), but also that CT was 12.5% greater than RT, 16.3% greater than SST and 12.7% greater than NT at 20–40 cm.…”

Section: Discussionsupporting

confidence: 92%

“…This can be explained first by tillage causing soil disturbance which causes a size reduction in soil aggregates and exposes protected organic matter to microbial decomposition and increases the losses of labile C (Elliott, ; Chen et al ., ,b). Second, reductions in the intensity of tillage operations allow more stable soil aggregate formation (Huang et al ., ), as reduced tillage promotes the formation of interaggregate organic matter, which in turn binds together soil particles and strengthens soil structure. In the present study, the most disruptive tillage treatment was CT followed by RT and SST with least disruption caused by NT.…”

Section: Discussionmentioning

confidence: 97%

“…Intensive soil disturbance promotes turnover of SOC and soil aggregation, which leads to the depletion of SOC and reduction in the number and stability of soil aggregates (Six et al ., ). However, there is increasing evidence to show that conservation tillage (minimal tillage or no‐tillage) has the potential to increase carbon sequestration in soil (Lal, ; Huang et al ., ).…”

Section: Introductionmentioning

confidence: 99%

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Changes in soil organic carbon and its chemical fractions under different tillage practices on loess soils of the Guanzhong Plain in north‐west China

Sun

Wang

et al. 2013

Soil Use and Management

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Over the past 20 years, conservation tillage has been used on the loess plateau of north‐west China to improve the sustainability of local agriculture. There had been particular concern about loss of soil organic matter associated with traditional tillage. We examined the influence of four tillage treatments: conventional tillage (CT), subsoiling tillage (SST), rotary tillage (RT) and no‐tillage (NT), with two straw residue management treatments (return and removal) on the distribution with soil depth (0–20 cm, 20–40 cm) of total organic carbon, labile organic carbon (KMnO4‐C) and bound organic carbon. The study was carried out on a Loutu soil (Earth‐cumuli‐Orthic Anthrosol) over seven consecutive years of a winter wheat (Triticum aestivum L.)–summer maize (Zea mays L.) crop rotation. By the end of this period, conservation tillage (SST, RT and NT) led to greater storage of soil organic carbon (SOC) (22.7, 14.9 and 16.3% with straw return in contrast to 21.4, 15.8 and 12.3% with no straw return, respectively) compared with CT in the surface soil (0–20 cm). The reduced tillage treatments (SST and RT) both increased significantly the highly labile organic carbon (HLOC) content of the surface soil (50% in both SST and RT) and mildly labile organic matter (MLOC) (49.4 in SST and 53.5% in RT) when straw was removed. The largest pool of bound carbon was observed in the Humin‐C pool, and the smallest in the free humic acids C (FHA‐C) in each tillage treatment. Conservation tillage led to an increased content of FHA‐C and CHA‐C. Results from correlation analyses indicate that SOC enrichment might have resulted from the increase in HLOC, MLOC, FHA‐C and CHA‐C over a short period. Labile organic carbon was associated with the organic carbon that was more loosely combined with clay (FHA‐C and CHA‐C). We conclude that both SST and RT are effective in maintaining or restoring organic matter in Loutu soils in this region, and the effect is greater when they are used in combination with straw return.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in soil organic carbon and its chemical fractions under different tillage practices on loess soils of the Guanzhong Plain in north‐west China

Sun

Wang

et al. 2013

Soil Use and Management

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“…In China, the arable land originated from the reclamation of grassland since the 1950s has reached 1.93×10 7 hm 2 , approximately accounting for 5% of the total area of the existing grassland (Su et al, 2005), and accordingly resulted in the great change in soil C stock. In China, it has been extensively studied about the effect of the cultivation on the soil C pool, but most of the studies were mainly focused on the agricultural ecosystems (Zhang et al, 2007;Ma et al, 2007;Liang et al, 2009;Huang et al, 2010) and few on the grassland (Wu and Tiessen, 2002;Su et al, 2004;Wang et al, 2011a). Wang et al (2011a) synthesized 133 papers published in the last 10 years on the effects on soil C of grassland management and related land use conversions in China, of these publications, only 19 reported about the conversion from grassland to cropland.…”

Section: Introductionmentioning

confidence: 99%

Effects of a conversion from grassland to cropland on the different soil organic carbon fractions in Inner Mongolia, China

Dong

Peng

et al. 2012

J. Geogr. Sci.

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Cultivation is one of the most important human activities affecting the grassland ecosystem besides grazing, but its impacts on soil total organic carbon (C), especially on the liable organic C fractions have not been fully understood yet. In this paper, the role of cropping in soil organic C pool of different fractions was investigated in a meadow steppe region in Inner Mongolia of China, and the relationships between different C fractions were also discussed. The results indicated that the concentrations of different C fractions at steppe and cultivated land all decreased progressively with soil depth. After the conversion from steppe to spring wheat field for 36 years, total organic carbon (TOC) concentration at the 0 to 100 cm soil depth has decreased by 12.3% to 28.2%, and TOC of the surface soil horizon, especially those of 0-30 cm decreased more significantly (p<0.01). The dissolved organic carbon (DOC) and microbial biomass carbon (MBC) at the depth of 0-40 cm were found to have decreased by 66.7% to 77.1% and 36.5% to 42.4%, respectively. In the S.baicalensis steppe, the ratios of soil DOC to TOC varied between 0.52% and 0.60%, and those in the spring wheat field were only in the range of 0.18%-0.20%. The microbial quotients (qMBs) in the spring wheat field, varying from 1.11% to 1.40%, were also lower than those in the S. baicalensis steppe, which were in the range of 1.50%-1.63%. The change of DOC was much more sensitive to cultivation disturbance. Soil TOC, DOC, and MBC were significantly positive correlated with each other in the S. baicalensis steppe, but in the spring wheat field, the correlativity between DOC and TOC and that between DOC and MBC did not reach the significance level of 0.05.

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“…Our results were similar to the observations by Yang & Wander () and Huang et al . (), who also found no overall change in SOC content within a short period. It appears difficult to raise the whole SOC content of soil over short periods (≤30 weeks).…”

Section: Resultsmentioning

confidence: 99%

Effects of litter source on the dynamics of particulate organic matter fractions and rates of macroaggregate turnover in different soil horizons

Parwada

Tol

2018

European J Soil Science

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Summary Soil texture influences the transformation of soil organic matter (SOM), and depletion and reduction in the number of macroaggregates. However, the extent of changes in SOM in response to its quality and mechanisms of stabilization in different types of soil texture is unclear. We evaluated changes in SOM during a 30‐week incubation experiment using seven soils mixed with two sources of litter; Vachellia karroo (Hayne) Banfi & Galasso leaf and Zea mays L. stover. We hypothesized that changes in intraparticulate organic matter (iPOM) are influenced by litter quality • soil type • time interactions, which affect rates of turnover of macroaggregates. A completely randomized design was used in arranging soil jars in the incubator. Free light fractions and coarse and fine iPOM within macroaggregates (>250 μm) decreased exponentially from week 1 to 30 and were significantly (P < 0.05) affected by litter source • soil horizon • time interactions. Trends of changes in fine iPOM fractions were the same in macroaggregates and microaggregates (P < 0.05). The greatest changes in POM fractions occurred 8 weeks after litter incorporation. Both V. karroo leaf and Z. mays stover stabilized macroaggregates during the first 8 weeks after incubation; thereafter they lost their influence. Therefore, we needed to reapply fresh litter after this period. Changes in iPOM fractions and macroaggregate turnover were specific to a soil type, suggesting that different sources of litter have different stabilizing effects in macroaggregates. Soil macroaggregate stabilization and changes in iPOM could be used as indicators to apply more appropriate management practices for soil protection or productivity. Highlights Does the source of organic matter affect transformation rates of different intraparticulate organic matter in the soil? Degradation of organic matter into very fine particulate matter also increases the rate of turnover of macroaggregates. Soil type • litter source interactions greatly influenced the rate of transformation from coarse to fine intraparticulate fractions. Effects of litter quality on dynamics of POM fractions in aggregates and macroaggregate turnover were horizon specific.

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Long-Term Effect of No-Tillage on Soil Organic Carbon Fractions in a Continuous Maize Cropping System of Northeast China

Cited by 50 publications

References 40 publications

Changes in soil organic carbon and its chemical fractions under different tillage practices on loess soils of the Guanzhong Plain in north‐west China

Changes in soil organic carbon and its chemical fractions under different tillage practices on loess soils of the Guanzhong Plain in north‐west China

Effects of a conversion from grassland to cropland on the different soil organic carbon fractions in Inner Mongolia, China

Effects of litter source on the dynamics of particulate organic matter fractions and rates of macroaggregate turnover in different soil horizons

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