Effects of nitrogen deposition on soil sulfur cycling

Chen, Hao; Yang, Liandong; Wen, Li; Luo, Pan; Liu, Lu; Yang, Yi; Wang, Kelin; Li, Dejun

doi:10.1002/2016gb005423

Cited by 21 publications

(14 citation statements)

References 45 publications

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“…Higher N input may increase plant S uptake and affect soil S turnover by enhancing primary productivity, especially in N-limited regions (De Bona and Monteiro, 2010; Harpole 5 et al, 2007;Phoenix et al, 2012;Wang et al, 2015). Nitrogen input can promote S supply by stimulating the mineralization of C-bonded S (into the form of SO4 2--S) (De Bona and Monteiro, 2010) and abiotic dissolution of mineral-bound S under the N-induced soil acidification (Wang et al, 2016). However, results from an 80-year fertilization experiment showed that N addition did not change the concentrations of 10 soil inorganic and organic S (Yang et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…However, results from an 80-year fertilization experiment showed that N addition did not change the concentrations of 10 soil inorganic and organic S (Yang et al, 2007). Nitrogen inputs may also have negative effects on S cycling rate due to the inhabitation of arylsulfatase activity (Chen et al, 2016). Therefore, soil S availability is mainly associated with soil pH and mineralization of soil organic matter (SOM) under N addition, but it is still poorly understood for its relationship with inorganic S fractions .…”

Section: Introductionmentioning

confidence: 99%

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Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions but the effects vary with mowing management in a temperate steppe

Li¹,

Liu²,

Wang³

et al. 2019

Preprint

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Abstract. Sulfur (S) availability plays a vital role in driving functions of terrestrial ecosystems, which can be largely affected by soil inorganic S fractions and pool size. Enhanced ecosystem nitrogen (N) input can significantly affect soil S availability, but it still remains largely unknown if the N effect varies with frequency of N addition and mowing management in grasslands. To investigate changes in soil S pool and inorganic S fractions (water-soluble S, adsorbed S, available S, and insoluble S), we conducted a field experiment with different frequencies (twice vs. monthly additions per year) and intensities (i.e. 0, 1, 2, 3, 5, 10, 15, 20, and 50&#8201;g&#8201;N&#8201;m&#8722;2&#8201;year&#8722;1) of NH4NO3 addition and mowing (unmowing vs. mowing) over six years in a temperate grassland of northern China. Soil water-soluble and adsorbed S concentrations significantly increased, while insoluble S decreased with increasing intensity of N input. Such changes were correlated with soil pH and total inorganic nitrogen (TIN) concentration. High frequency of N addition increased the concentrations of water-soluble S, adsorbed S and available S as compared to low frequency of N addition in mown plots. Mowing significantly decreased all soil inorganic S fractions by reducing S replenishment via plant residue return. Mowing significantly interacted with both N addition intensity and frequency to affect inorganic S fractions, in that adsorbed S and available S showed no response to N addition intensity in unmown plots but significantly increased in mown plots under high N frequency. Mowing interacted with N addition intensity to decrease soil S pool size, suggesting that biomass removal under N input would cause soil S depletion in this temperate grassland. Nitrogen addition could replenish soil available S by promoting dissolution of soil insoluble S with decreasing soil pH and mineralization of organic S due to increasing plant S uptake. Our results further indicated that using large and infrequent N addition to simulate N deposition can overestimate the main effects of N deposition and mowing on soil S availability in semi-arid grasslands.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions but the effects vary with mowing management in a temperate steppe

Li¹,

Liu²,

Wang³

et al. 2019

Preprint

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show abstract

“…Our results further indicated that using large and infrequent N additions to simulate N deposition can overestimate the main effects of N deposition and mowing management on soil S availability in semiarid grasslands. 2014a) but decreases soil pH (Wang et al, 2018) and plant N concentrations (Cheng et al, 2009) in comparison to highfrequency N addition. Low frequency of N addition has been reported to overestimate the effects of N deposition on plant species diversity (Zhang et al, 2014b).…”

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confidence: 97%

Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions, but the effects vary with mowing management in a temperate steppe

Liu

Wang

et al. 2019

Biogeosciences

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Abstract. Sulfur (S) availability plays a vital role in driving functions of terrestrial ecosystems, which can be largely affected by soil inorganic S fractions and pool size. Enhanced nitrogen (N) input can significantly affect soil S availability, but it still remains largely unknown if the N effect varies with frequency of N addition and mowing management in grasslands. To investigate changes in the soil S pool and inorganic S fractions (soluble S, adsorbed S, available S, and insoluble S), we conducted a field experiment with different frequencies (two times per year vs. monthly additions per year) and intensities (i.e., 0, 1, 2, 3, 5, 10, 15, 20, and 50 g N m−2 yr−1) of NH4NO3 addition and mowing (unmown vs. mown) over 6 years in a temperate grassland of northern China. Generally, N addition frequency, N intensity, and mowing significantly interacted with each other to affect most of the inorganic S fractions. Specifically, a significant increase in soluble S was only found at high N frequency with the increasing intensity of N addition. Increasing N addition intensity enhanced adsorbed S and available S concentrations at low N frequency in unmown plots; however, both fractions were significantly increased with N intensity at both N frequencies in mown plots. The high frequency of N addition increased the concentrations of adsorbed S and available S in comparison to the low frequency of N addition only in mown plots. Changes in soil S fractions were mainly related to soil pH, N availability, soil organic carbon (SOC), and plant S uptake. Our results suggested that N input could temporarily replenish soil-available S by promoting dissolution of soil-insoluble S with decreasing soil pH and mineralization of organic S due to increasing plant S uptake. However, the significant decrease in organic S and total S concentrations with N addition intensity in mown plots indicated that N addition together with biomass removal would eventually cause soil S depletion in this temperate grassland in the long term. Our results further indicated that using large and infrequent N additions to simulate N deposition can overestimate the main effects of N deposition and mowing management on soil S availability in semiarid grasslands.

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“…In addition, in areas with heavy sulfur dioxide-formed acid deposition, AS would be further altered as soil S and pH could be directly changed by S input and acidification of soil, respectively (Cai et al 2012, Xiao et al 2015. The significant correlation between AS and PC1 based on pH, SOC and five other major nutrients suggesting substantial relationships between AS and soil environmental conditions or AS and other soil elements cycling (Figures 2 and 3) (Chen et al 2016, Fan et al 2017). In addition, among all the variables, AMg, AK and AN correlated the most with PC1, indicating stronger contribution of AMg to PC1 and hence potential changes in AS across elevation gradients.…”

mentioning

confidence: 97%

“…63, 2017, No. 6: 250-256 doi: 10.17221/83/2017-PSE input (Chen et al 2016). In addition, in areas with heavy sulfur dioxide-formed acid deposition, AS would be further altered as soil S and pH could be directly changed by S input and acidification of soil, respectively (Cai et al 2012, Xiao et al 2015.…”

mentioning

confidence: 99%

Response of soil sulfur availability to elevation and degradation in the Wugong Mountain meadow, China

Li¹,

Zhang²,

Chen³

et al. 2017

Plant Soil Environ.

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Vegetation restorations of degraded meadows have been widely implemented. The evaluation of soil nutrient changes as affected by degradation is vital for efficient restorations. However, while macronutrients (nitrogen, phosphorus and potassium) have been widely investigated, sulfur (S) as one important element correlated tightly with other nutrients has not been thoroughly studied. Two studies were conducted to determine changes of sulfur as affected by degradation and elevation gradients. The results showed that available S (AS) changed non-linearly with elevation and the first principal component based on other soil nutrient variables. Soil AS depended on degradation levels and contributed substantially to the separation of meadows with different degradation levels. Moreover, AS responded stronger to changes in elevation gradients and degradation levels compared with other major nutrients. Thereby, AS could be an important nutrient responding to meadow disturbance, which should be considered in future studies on meadow soil nutrients cycling and vegetation restorations. The findings have implications for ecological restoration of degraded meadows with respect to soil nutrient management and conservations.

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Effects of nitrogen deposition on soil sulfur cycling

Cited by 21 publications

References 45 publications

Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions but the effects vary with mowing management in a temperate steppe

Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions but the effects vary with mowing management in a temperate steppe

Frequency and intensity of nitrogen addition alter soil inorganic sulfur fractions, but the effects vary with mowing management in a temperate steppe

Response of soil sulfur availability to elevation and degradation in the Wugong Mountain meadow, China

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