Meta-analysis of the priming effect on native soil organic carbon in response to glucose amendment across soil depths

Gaudel, Gokul; Poudel, Megharaj; Mosongo, Peter Semba; Li, Xing; Oljira, Abraham Mulu; Zhang, Yuming; Bizimana, Fiston; Liu, Binbin; Wang, Yuying; Dong, Wenxu; Uwamungu, Jean Yves; Hu, Chunsheng

doi:10.1007/s11104-021-05168-5

Cited by 17 publications

(8 citation statements)

References 136 publications

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“…Obtained parameters were used to calculate the mean residence time (MRT) as 1/k and half-life as ln(2)/k. Natural logarithm transformed response ratio (lnRR) was used to measure the direction and magnitude of PE induced by crop residues, the effects of N inputs on ER and PE, the N limitation of microbial respiration, and the effects of crop residue C inputs on total C emissions (Gaudel et al, 2021). The lnRR greater than 0 indicates a positive direction, while lnRR less than 0 represents a negative direction.…”

Section: Discussionmentioning

confidence: 99%

“…based on Akaike's information criteria (Table S2) following previous studies (Gaudel et al, 2021;Sun et al, 2019;Zhang et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…

Cropland, as an important carbon (C) sink and source for atmospheric C, plays an integral role in regulating global climate change through its dynamics of soil organic carbon (SOC;Gaudel et al, 2021;Lehmann & Kleber, 2015;Tang et al, 2019). SOC dynamics in cropland are largely influenced by the influx of exogenous organic matter (EOM), such as root exudates, animal

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confidence: 99%

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Carbon emissions and priming effects derived from crop residues and their responses to nitrogen inputs

Qin,

Chen,

Scriber

et al. 2024

Global Change Biology

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Crop residue‐derived carbon (C) emissions and priming effects (PE) in cropland soils can influence the global C cycle. However, their corresponding generality, driving factors, and responses to nitrogen (N) inputs are poorly understood. As a result, the total C emissions and net C balance also remain mysterious. To address the above knowledge gaps, a meta‐analysis of 1123 observations, taken from 51 studies world‐wide, has been completed. The results showed that within 360 days, emission ratios of crop residues C (ER) ranged from 0.22% to 61.80%, and crop residues generally induced positive PE (+71.76%). Comparatively, the contribution of crop residue‐derived C emissions (52.82%) to total C emissions was generally higher than that of PE (12.08%), emphasizing the importance of reducing ER. The ER and PE differed among crop types, and both were low in the case of rice, which was attributed to its saturated water conditions. The ER and PE also varied with soil properties, as PE decreased with increasing C addition ratio in soils where soil organic carbon (SOC) was less than 10‰; in contrast, the opposite phenomenon was observed in soils with SOC exceeding 10‰. Moreover, N inputs increased ER and PE by 8.31% and 3.78%, respectively, which was predominantly attributed to (NH4)2SO4. The increased PE was verified to be dominated by microbial stoichiometric decomposition. In summary, after incorporating crop residues, the total C emissions and relative net C balance in the cropland soils ranged from 0.03 to 23.47 mg C g−1 soil and 0.21 to 0.97 mg C g−1 residue‐C g−1 soil, respectively, suggesting a significant impact on C cycle. These results clarify the value of incorporating crop residues into croplands to regulate global SOC dynamics and help to establish while managing site‐specific crop return systems that facilitate C sequestration.

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Section: Discussionmentioning

confidence: 99%

“…based on Akaike's information criteria (Table S2) following previous studies (Gaudel et al, 2021;Sun et al, 2019;Zhang et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…

…”

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Carbon emissions and priming effects derived from crop residues and their responses to nitrogen inputs

Qin,

Chen,

Scriber

et al. 2024

Global Change Biology

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“…Possibly, the priming effect resulted from the competition for energy and nutrient acquisition between the decomposer microorganisms specialized in fresh organic matter and those in soil organic matter (Fontaine et al, 2003). Gaudel et al (2021) reported that the priming effect on native soil organic matter induced by exogenous glucose was more pronounced in the deeper soil layer with a lower native content of organic matter than that in the surface layer; the authors also observed a negative correlation of the priming effect with microbial biomass carbon and soil organic carbon. However, the duration of this experiment was relatively short and results could change if the priming effect were studied on an annual scale, since a first phase of negative influence of exogenous addition of organic carbon (first 90 days) might be followed by a positive pulse (Zhang et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Nitrogen release from pelletized poultry fertilizer in two soils: influence of soil moisture and microbial biomass

Monaci¹,

Angeletti²,

Casucci³

et al. 2022

Revista Brasileira De Ciência Do Solo

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Nitrogen release from organic amendments, e.g., from organic agriculture, is a key process to raise soil fertility to sustain crop production in low environmental impact agroecosystems. This study aimed to investigate nitrogen release from a pelletized organic amendment containing poultry litter, guano and pot ale applied to soil from a field under two different management systems: an alfalfa-based crop rotation, enriched with N by the legume, under low-intensity tillage and a cereal-sunflower crop rotation under high-intensity tillage. Both sample types were evaluated under different temperature and soil moisture conditions (optimal and variable). The influence of the released amount of N-NO 3 on soil microbial biomass, soil basal respiration as well as on β-glucosidase, alkaline phosphatase and o-diphenoloxidase were investigated. The soil fertility level under low-intensity was higher than under high-intensity tillage. Consequently, compared to the control, microbial biomass growth in pellet-treated samples was intensified, both under optimal and variable conditions. Nevertheless, at the end of the experiment under variable conditions, microbial biomass decreased down to the level of the control. Soil moisture was identified as the limiting factor for basal respiration in low-tillage soil, while in the intensively tilled soil, low fertility was limiting, and respiration increased in response to pellet application, supplying C for microbial biomass. During the experimental period, the investigated enzyme activities were somewhat intensified by pellet application, contributing slightly to improve soil biochemical fertility. More N-NO 3 was released from soil under low than high-intensity tillage; however after 90-days, the pellet was not completely mineralized, and even at optimal soil moisture content, nitrate release was only partial. This indicated that pelletizing, though useful for practical reasons such as handling, storage and field distribution, can reduce the fertilization efficiency of organic amendments.

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“…As concrete examples of feasibility, this special issue also brings case studies of new and "rediscovered" NCS+ technologies used from the tropics to boreal regions. Select examples include incentivized conservation of forests through voluntary carbon markets (Bomfim et al 2022); restoration of soil and biomass carbon stocks in native and non-native coastal ecosystems (Zhang et al 2022); ecological modeling of climate mitigation and adaptation policies for the sustainable management of timber production in aridifying regions (Giebink et al 2022); assessments of risk and benefits of traditional pyrogenic carbon production and application in developing nations (Aquije et al 2021); studies of soil structure and function of root mycorrhizal communities in ecological transitions (Ghotsa Mekontchou et al 2022); and a meta-analysis of organic matter accumulation and decomposition at different soil depths in response to management (Gaudel et al 2021).…”

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confidence: 99%

Climate solutions: the next phase of understanding and implementation

Silva

2022

Plant Soil

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Meta-analysis of the priming effect on native soil organic carbon in response to glucose amendment across soil depths

Cited by 17 publications

References 136 publications

Carbon emissions and priming effects derived from crop residues and their responses to nitrogen inputs

Carbon emissions and priming effects derived from crop residues and their responses to nitrogen inputs

Nitrogen release from pelletized poultry fertilizer in two soils: influence of soil moisture and microbial biomass

Climate solutions: the next phase of understanding and implementation

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