Soil carbon storage and stratification under different tillage/residue-management practices in double rice cropping system

Chen, Zhong-du; Zhang, Hai‐Lin; Dikgwatlhe, Shadrack Batsile; Xue, Jian-Fu; Qiu, Kangcheng; Tang, Haiming; Chen, Fu

doi:10.1016/s2095-3119(15)61068-1

Cited by 11 publications

(6 citation statements)

References 28 publications

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“…We also found an increasing trend in stratification ratios with BT and ST, which means that SOC accumulated on the surface, but in ST, the opposite trend was observed. The same result has also been found in other reports (Chen et al, ; Lopez‐Fando & Pardo, ; Marinho et al, ). According to Chabbi and Rumpel (), SOC accumulations on the surface are common because of the lower transport rate but surface SOC is prone to mineralization (Murphy et al, ), and the immobilization of organic carbon in deep soil is conducive to the stable accumulation of soil carbon.…”

Section: Resultssupporting

confidence: 91%

“…Some research have indicated that with long‐term traditional tillage with removed crop residue, SOC storage can be decreased by 20–50% (Calegari et al, ; Van Eerd, Congreves, Hayes, Verhallen, & Hooker, ). On the contrary, conservation tillage reduces negative effects such as soil erosion, carbon mineralization, and soil degradation caused by traditional tillage and has the potential to convert atmospheric carbon to sink sequestrate (Chen et al, ; Melero, Lopez‐Garrido, Manuel Murillo, & Moreno, ). Furthermore, conservation tillage has the potential to mitigate greenhouse gases within the agricultural sector.…”

Section: Introductionmentioning

confidence: 99%

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Tillage system change affects soil organic carbon storage and benefits land restoration on loess soil inNorthChina

Wang

Zhang

et al. 2018

Land Degrad Dev

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Soil organic carbon (SOC) is a core indicator of soil quality. A proper tillage system can improve SOC accumulation and benefit land restoration. This improvement is especially significant in loess soil, which is undergoing serious degradation in China. In this study, we chose a field that was used for crop production and used a traditional moldboard plow with crop residue removal (CT) for over 10 years. We then carried out a long-term field experiment (2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015) and changed the tillage system from a moldboard plow with crop residue removal to either a moldboard plow with buried straw system (BT), a no-tillage with straw mulch system (NT), or a subsoiling with straw mulch system (ST) to evaluate the effect of tillage system change and the effects of tillage systems on SOC storage. Tillage system change influenced SOC content, NT, ST, and BT showed higher values of SOC content and increased 8.34, 7.83, and 1.64 Mg·C·ha −1 , respectively, compared with CT. Among the 3 changed tillage systems, NT and ST showed a 12.5% and 11.6% increase in SOC content then BT, respectively. Tillage system change influenced SOC stratification ratio values, with higher value observed in BT and NT compared CT but ST. Therefore, in loess soil, changing tillage system can significantly improve SOC storage and change profile distribution. The NT and ST treatments showed a more marked SOC increase, but the increase value in stratification ratio with NT still needs attention, and our results is meaningful for soil quality improvement and land restoration.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Tillage system change affects soil organic carbon storage and benefits land restoration on loess soil inNorthChina

Wang

Zhang

et al. 2018

Land Degrad Dev

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“…The N 2 O emission in our study was negligible (0.035-0.078 g m −2 ) during early rice and late rice growth stages in 2019 and 2020. This agrees with previous findings indicating that N 2 O emission from paddy fields was also lower [7,18]. N 2 O emission from paddy fields was the result of soil anaerobic denitrification and aerobic nitrification activities [26].…”

Section: Effects Of Tillage Management On Ch 4 and N 2 O Emissionssupporting

confidence: 93%

“…Smith et al [5] found that SOC stock with notillage (NT) treatment was higher than that of the other tillage treatments. Some results indicated that SOC content at the 0-30 cm soil layer with conventional tillage (CT) and NT treatments increased, while C storage (0-5 cm) at the surface layer with NT treatment increased [6][7][8]. However, Chen et al [9] indicated that SOC stock at the 0-20 cm soil layer was not significantly impacted by tillage and crop residue management.…”

Section: Introductionmentioning

confidence: 99%

Effects of Short-Term Tillage Managements on CH4 and N2O Emissions from a Double-Cropping Rice Field in Southern of China

Tang¹,

Li²,

Shi³

et al. 2022

Agronomy

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Soil carbon (C) content plays an important role in maintaining or increasing soil quality and soil fertility. However, the impacts of different tillage and crop residue incorporation managements on greenhouse gas (GHG) emissions from paddy fields under the double-cropping rice (Oryza sativa L.) system in southern China still need further study. Therefore, a field experiment was conducted to determine the impacts of different short-term (5-years) tillage and crop residue incorporation managements on soil organic carbon (SOC) content, SOC stock, and GHG emissions from paddy fields under the double-cropping rice system in southern China. The field experiment included four tillage treatments: rotary tillage with all crop residues removed as a control (RTO), conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), and no-tillage with crop residue retention (NT). These results indicated that SOC stock in paddy fields with CT, RT, and NT treatments increased by 4.64, 3.60, 3.50 Mg ha−1 and 4.68, 4.21, and 4.04 Mg ha−1 in 2019 and 2020, respectively, compared with RTO treatment. The results showed that early rice and late rice yield with CT treatment increased by 7.22% and 19.99% in 2019 and 6.19% and 6.40% in 2020, respectively, compared with RTO treatment. A two-year (2019–2020) investigation of GHG results indicated that methane emissions from paddy fields with NT treatment were decreased, but nitrous oxide emissions from paddy fields were increased. The lowest mean global warming potential (GWP) and per yield GWP carbon dioxide were found with NT treatment, compared to RT and CT treatments. Therefore, it was a beneficial practice for maintaining SOC stock and decreasing GHG mitigation under the double-cropping rice system in southern China by applying no-tillage with crop residue retention management.

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“…In previous studies, some results indicated that soil C status were improved under ploughing tillage combined with straw return to rice ( Oryza sativa L.) fields compared with RT, but soil easily oxidizable C (EOC) content showed opposite results (Zhu et al, 2014). But some results showed that SOC stock at plough layer in rice fields under RT treatment was higher than that of fields under CT and NT treatments ‐ based on long‐term field experiments (Chen et al, 2015; Mondal et al, 2020). Qi et al (2019) results showed that SOC stock at 0–5 cm depth in rice fields under NT combined with residue retention treatment increased by 12.1%–35.3% ‐ based on a 13‐year field experiment.…”

Section: Introductionmentioning

confidence: 99%

Effects of short‐term tillage managements on rhizosphere soil‐labile organic carbon fractions and their hydrolytic enzyme activity under a double‐cropping rice field regime in Southern China

Tang

Shi

et al. 2022

Land Degrad Dev

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The soil-labile organic carbon (C) fractions and their hydrolytic enzyme activity play an important role in maintaining or increasing soil quality and soil fertility, which are affected by adopting various tillage managements. But there is still limited information about how rhizosphere soil-labile organic C fractions and their hydrolytic enzyme activity respond to different tillage managements under a double-cropping rice (Oryza sativa L.) (early rice and late rice) in a field in Southern China. We hypothesized that rhizosphere soil-labile organic C fractions and their hydrolytic enzyme activity in the double-cropping rice field were modified by combined application of tillage with crop residue incorporation. Therefore, the main objectives of this study were to explore change in rhizosphere SOC content, soil-labile organic C fractions [mineralizable C (C min ), microbial biomass C (MBC), dissolved organic C (DOC), particulate organic C (POC), light fraction organic C (LFOC), permanganate oxidizable C (KMnO 4 -C)] and their hydrolytic enzyme activity during 6-years tillage management in a double-cropping rice system in Southern China by using the fluorometric method. The relationship between proportion of each labile organic C fraction to SOC content were analysis using the redundancy analysis (RDA) method. The experiments included four tillage treatments: rotary tillage with all crop residues removed as a control (RTO), conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), and no-tillage with crop residue retention (NT). The results showed that combined application of tillage with crop residue incorporation managements significantly increases rhizosphere SOC content and soillabile organic C fractions compared without crop residue input treatment. Compared with RTO treatment, rhizosphere soil C min , KMnO 4 -C, POC, DOC, LFOC, and MBC contents with CT treatment increased by 170.97%, 37.22%, 52.53%, 14.46%, 20.29%, and 27.35%, respectively. The proportion of labile C with CT, RT, and NT treatments was higher than that of RTO treatment. This results demonstrated that rhizosphere soil hydrolytic enzyme activity with CT, RT, and NT treatments were higher than that of RTO treatment. Compared with RTO treatment, rhizosphere soil

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Soil carbon storage and stratification under different tillage/residue-management practices in double rice cropping system

Cited by 11 publications

References 28 publications

Tillage system change affects soil organic carbon storage and benefits land restoration on loess soil inNorthChina

Tillage system change affects soil organic carbon storage and benefits land restoration on loess soil inNorthChina

Effects of Short-Term Tillage Managements on CH4 and N2O Emissions from a Double-Cropping Rice Field in Southern of China

Effects of short‐term tillage managements on rhizosphere soil‐labile organic carbon fractions and their hydrolytic enzyme activity under a double‐cropping rice field regime in Southern China

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