Soil Aggregate Stability and Aggregate-Associated Carbon Under Different Tillage Systems in the North China Plain

Du, Zhangliu; Ren, Tao; Hu, Chunsheng; Zhang, Qingzhong; Blanco‐Canqui, Humberto

doi:10.1016/s2095-3119(13)60428-1

Cited by 63 publications

(38 citation statements)

References 34 publications

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“…Formation and stabilization of aggregates in soil mainly depend on the amount of biomass input and the rate of organic matter mineralization (Blanco-Canqui and Lal, 2004). Similarly, the increased amounts of 4.0-2.0 mm aggregates in the NT tillage practice was also reported by Zhang et al (2012) and Du et al (2013) in long term experiments. Moreover, Zhang et al (2012) found that the >2.0 mm aggregate size in a clay loam soil was higher under no-tillage in comparison to conventional tillage.…”

Section: Resultsmentioning

confidence: 63%

Effects of long-term tillage systems on aggregate-associated organic carbon in the eastern Mediterranean region of Turkey

Acar¹,

Çeli̇k²,

Günal³

2018

Eurasian Journal of Soil Science (Ejss)

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Article Info Received : 28.03.2017 Accepted : 09.08.2017 The stability of aggregates plays a vital role in preserving and long term storing of soil organic carbon (SOC). In this study, the long-term (2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014) effects of six tillage systems on aggregate-associated SOC were investigated in a field experiment conducted under Mediterranean conditions. The tillage treatments were; conventional tillage with residue incorporated in the soil (CT1), conventional tillage with residue burned (CT2), reduced tillage with heavy tandem disc-harrow (RT1), reduced tillage with rotary tiller (RT2), reduced tillage with heavy tandem disc harrow fallowed by no-tillage (RNT) for the second crop, and no tillage (NT). The most frequently encountered aggregates in all tillage systems were at 4.0-2.0 mm size and the least frequently found aggregates were 1.0-0.5 mm. The mean weight diameter (MWD) value increased in the NT compared to the conventional tillage practices at the rates of 137% and 204%, respectively at 0-15 cm soil depth. Aggregate-associated SOC contents in 0-15 cm depth were higher under conservation tillage systems. However, the highest SOC at 15-30 cm depth were greater mainly in conventional tillage systems as 9.4% for both CT1 and CT2. The results indicated that conservation tillage systems had greater aggregation and carbon storage at the soil surface.

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Section: Resultsmentioning

confidence: 63%

Effects of long-term tillage systems on aggregate-associated organic carbon in the eastern Mediterranean region of Turkey

Acar¹,

Çeli̇k²,

Günal³

2018

Eurasian Journal of Soil Science (Ejss)

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“…When considering the whole 0.00-0.30 m layer, however, the differences in SOC stock were not significant between NT-S and MP-S as well as between NT+S and MP+S (Table 2). This indicates that the NT system did affect the SOC stock distribution in the soil profile but not the total quantity, as suggested by Du et al (2013).…”

Section: Changes In Soc Distribution In Soil Profilementioning

confidence: 72%

“…Several studies has shown that significant SOC sequestration under NT is closely related to improved aggregation that protects C from mineralization (Six et al, 2002;Stewart et al, 2008;Nyamadzawo et al, 2009;Fuentes et al, 2012;Du et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Water-Stable Aggregates and Associated Carbon in a Subtropical Rice Soil Under Variable Tillage

Liu

Chen

et al. 2016

Rev. Bras. Ciênc. Solo

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Tillage systems can influence C sequestration by changing aggregate formation and C distribution within the aggregate. This study was undertaken to explore the impact of no-tillage without straw (NT-S) and with straw (NT+S), and moldboard plow without straw (MP-S) and with straw (MP+S), on soil aggregation and aggregate-associated C after six years of double rice planting in a Hydragric Anthrosol in Guangxi, southwest of China. Soil samples of 0.00-0.05, 0.05-0.20 and 0.20-0.30 m layers were wet-sieved and divided into four aggregate-size classes, >2 mm, 2.00-0.25 mm, 0.25-0.053 and <0.053 mm, respectively, for measuring aggregate associated C and humic and fulvic acids. Results showed that the soil organic carbon (SOC) stock in bulk soil was 40.2-51.1 % higher in the 0.00-0.05 m layer and 11.3-17.0 % lower in the 0.05-0.20 m layer in NT system (NT+S and NT-S) compared to the MP system (MP+S and MP-S), respectively. However, no statistical difference was found across the whole 0.00-0.30 m layer. The NT system increased the proportion of >2 mm aggregate fraction and reduced the proportion of <0.053 mm aggregates in both 0.00-0.05 and 0.05-0.20 m layers. The SOC concentration, SOC stock and humic and fulvic acids within the >0.25 mm macroaggregate fraction also significantly increased in the 0.00-0.5 m layer in NT system. However, those within the 2.00-0.25 mm aggregate fraction were significantly reduced in the 0.05-0.200 m layer under NT system. Straw incorporation increased not only the SOC stock in bulk soil, but also the proportion of macroaggregate, aggregate associated with SOC and humic and fulvic acids concentration within the aggregate. The effect of straw on C sequestration might be dependent on the location of straw incorporation. In conclusion, the NT system increased the total SOC accumulation and humic and fulvic acids within macroaggregates, thus contributing to C sequestration in the 0.00-0.05 m layer.

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“…Recovery rate of aggregate masses for soil sieved in our study was higher than 98 %, indicating the efficacy of wetsieving method on investigation the N transformation at different size aggregate fractions. Mean weight diameter (MWD) of soil aggregates was calculated from the aggregate-size distribution, according to Du et al (2013).…”

Section: Soil Sampling Aggregate Fractionation and Soil Properties mentioning

confidence: 99%

“…Soil organic carbon (SOC) and total N (TN) were measured using a CN analyzer (Thermo Fischer Scientific Inc., Sunnyvale, CA, USA). As the soil was calcareous, bulk soil was treated with 0.5 mol L −1 HCl to remove inorganic C (Du et al 2013) prior the determination of SOC.…”

Section: Soil Sampling Aggregate Fractionation and Soil Properties mentioning

confidence: 99%

Change in the abundance and community composition of ammonia-oxidizing bacteria and archaea at soil aggregate level as native pasture converted to cropland in a semiarid alpine steppe of central Asia

Zhu

Guo

et al. 2015

J Soils Sediments

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Soil Aggregate Stability and Aggregate-Associated Carbon Under Different Tillage Systems in the North China Plain

Cited by 63 publications

References 34 publications

Effects of long-term tillage systems on aggregate-associated organic carbon in the eastern Mediterranean region of Turkey

Effects of long-term tillage systems on aggregate-associated organic carbon in the eastern Mediterranean region of Turkey

Water-Stable Aggregates and Associated Carbon in a Subtropical Rice Soil Under Variable Tillage

Change in the abundance and community composition of ammonia-oxidizing bacteria and archaea at soil aggregate level as native pasture converted to cropland in a semiarid alpine steppe of central Asia

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