Global effects on soil respiration and its temperature sensitivity depend on nitrogen addition rate

Yang, Yang; Li, Ting; Pokharel, Prem; Liu, Liangxu; Qiao, Jiangbo; Wang, Yunqiang; An, Shaoshan; Chang, Scott X.

doi:10.1016/j.soilbio.2022.108814

Cited by 65 publications

(47 citation statements)

References 83 publications

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“…Contrary to prior findings that Rh was significantly suppressed by N enrichment (Yang et al, 2022;Zhong et al, 2016;Zhou et al, 2014Zhou et al, , 2016, we demonstrated that the suppressive effect may not be as significant as previously assumed (−0.04% vs. −21.2 to −6.5%).…”

Section: Discussioncontrasting

confidence: 99%

“…To address the above knowledge gap, we compiled a new global database of 1282 observations from 579 N addition experiments of 317 published papers, with the number of observations being 2.1-12.7 times greater than those in previous meta-analyses (Lu et al, 2011;Yang et al, 2022;Zhong et al, 2016;Zhou et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Particularly, several broad‐scale meta‐analyses have synthesized the individual experiments to explore the central tendency of Rs response (e.g., Zhong et al, 2016; Zhou et al, 2014). Nevertheless, their results are inconsistent and the N effect on Rs is highly variable; N addition may substantially stimulate (Lu et al, 2011; Zhou et al, 2014, 2016), significantly inhibit (Yang et al, 2022), or have little influence on Rs (Liu & Greaver, 2010; Song et al, 2019; Zhong et al, 2016). These conflicting and uncertain responses may partly result from differences in data samples, but more importantly, their results demonstrate that the N effects on soil CO 2 efflux are extremely heterogeneous across various landscapes, depending on N addition rates, climatic conditions, and soil characteristics that linearly and nonlinearly regulate Rs and its components (Janssens et al, 2010; Luo & Zhou, 2006).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spatially explicit estimate of nitrogen effects on soil respiration across the globe

Liu

Mingxin

Peng

et al. 2023

Global Change Biology

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Soil respiration (Rs), as the second largest flux of carbon dioxide (CO2) between terrestrial ecosystems and the atmosphere, is vulnerable to global nitrogen (N) enrichment. However, the global distribution of the N effects on Rs remains uncertain. Here, we compiled a new database containing 1282 observations of Rs and its heterotrophic component (Rh) in field N manipulative experiments from 317 published papers. Using this up‐to‐date database, we first performed a formal meta‐analysis to explore the responses of Rs and Rh to N addition, and then presented a global spatially explicit quantification of the N effects using a Random Forest model. Our results showed that experimental N addition significantly increased Rs but had a minimal impact on Rh, not supporting the prevailing view that N enrichment inhibits soil microbial respiration. For the major biomes, the magnitude of N input was the main determinant of the spatial variation in Rs response, while the most important predictors for Rh response were biome specific. Based on the key predictors, global mapping visually demonstrated a positive N effect in the regions with higher anthropogenic N inputs (i.e., atmospheric N deposition and agricultural fertilization). Overall, our analysis not only provides novel insight into the N effects on soil CO2 fluxes, but also presents a spatially explicit assessment of the N effects at the global scale, which are pivotal for understanding ecosystem carbon dynamics in future scenarios with more frequent anthropogenic activities.

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Section: Discussioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatially explicit estimate of nitrogen effects on soil respiration across the globe

Liu

Mingxin

Peng

et al. 2023

Global Change Biology

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“…Adding nitrogen to soil also plays a critical role in soil respiration. Soil respiration is also temperature-sensitive, and increasing average global temperature and increasing nitrogen-based fertilizer usage can significantly affect the cycle [71].…”

Section: Co 2 To Methanolmentioning

confidence: 99%

A Review of CCUS in the Context of Foams, Regulatory Frameworks and Monitoring

2023

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Greenhouse gas emission into the atmosphere is considered the main reason for the rise in Earth’s mean surface temperature. According to the Paris Agreement, to prevent the rise of the global average surface temperature beyond two degrees Celsius, global CO2 emissions must be cut substantially. While a transition to a net-zero emission scenario is envisioned by mid-century, carbon capture, utilization, and storage (CCUS) will play a crucial role in mitigating ongoing greenhouse gas emissions. Injection of CO2 into geological formations is a major pathway to enable large-scale storage. Despite significant recent technological advancements, mass deployment of these technologies still faces several technical and non-technical difficulties. This paper provides an overview of technical milestones reached thus far in CO2 capture, utilization, geological storage, monitoring technologies, and non-technical aspects such as regulatory frameworks and related policies in the US and the rest of the world. This paper describes different injection methods to store CO2 in various subsurface formations, the use of foams and the resulting potential gains in CO2 storage capacity, the role of nanoparticles for foam stabilization, and ensuring long-term storage safety. This work also addresses several safety-related aspects of geological storage and subsurface monitoring technologies that may mitigate risks associated with long-term storage.

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“…This amount is predicted to increase due to the global population growth and increasing demand for food, all adding pressure to the agriculture practices to increase productivity. The concentration of greenhouse gases (GHGs), such as carbon dioxide (CO 2 ), nitrous oxide (N 2 O) and methane (CH 4 ), is rising rapidly 2 – 5 , resulting in climate change, altered precipitation regimes and global warming 6 , 7 . Carbon dioxide is the primary GHG, but N 2 O and CH 4 also have a significant influence on climate change, while being released in smaller quantities than CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Effects of acidifiers on soil greenhouse gas emissions in calcareous soils in a semi-arid area

Derafshi

Lajayer

Hassani

et al. 2023

Sci Rep

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In most agricultural fields, when soil pH is high, elemental sulfur or sulfuric acid are used to reduce soil pH and increase the availability of macro and micronutrients for optimum crop yield. However, how these inputs impact soil greenhouse gas emissions is unknown. This study aimed to measure the amount of greenhouse gas emissions and pH after the application of various doses of elemental sulfur (ES) and sulfuric acid (SA). Using static chambers, this study quantifies soil greenhouse gas emissions (CO2, N2O, and CH4) for 12 months after the application of ES (200, 400, 600, 800, and 1000 kg ha−1) and SA (20, 40, 60, 80 and 100 kg ha−1) to a calcareous soil (pH 8.1) in Zanjan, Iran. Also, in order to simulate rainfed and dryland farming which are common practices in this area, this study was conducted with and without sprinkler irrigation. Application of ES slowly decreased soil pH (more than half a unit) over the year whereas application of SA temporarily reduced the pH (less than a half unit) for a few weeks. CO2 and N2O emissions and CH4 uptake were maximum during summer and lowest in winter. Cumulative CO2 fluxes ranged from 1859.2 kg−1 CO2-C ha−1 year−1 in the control treatment to 2269.6 kg CO2-C ha−1 year−1 in the 1000 kg ha−1 ES treatment. Cumulative fluxes for N2O-N were 2.5 and 3.7 kg N2O-N ha−1 year−1 and cumulative CH4 uptakes were 0.2 and 2.3 kg CH4-C ha−1 year−1 in the same treatments. Irrigation significantly increased CO2 and N2O emissions and, depending on the amount of ES applied, decreased or increased CH4 uptake. SA application had a negligible effect on GHGs emissions in this experiment and only the highest amount of SA altered GHGs emissions.

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Global effects on soil respiration and its temperature sensitivity depend on nitrogen addition rate

Cited by 65 publications

References 83 publications

Spatially explicit estimate of nitrogen effects on soil respiration across the globe

Spatially explicit estimate of nitrogen effects on soil respiration across the globe

A Review of CCUS in the Context of Foams, Regulatory Frameworks and Monitoring

Effects of acidifiers on soil greenhouse gas emissions in calcareous soils in a semi-arid area

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