Enhanced topsoil P leaching in a short term flooded calcareous soil with combined straw and ammonium nitrogen incorporation

Geoderma ◽  
2021 ◽  
Vol 402 ◽  
pp. 115322
Author(s):  
Shuai Zhang ◽  
Shuo Chen ◽  
Owen Fenton ◽  
Yuhong Li ◽  
Qing Chen
Keyword(s):  
Calcareous Soil ◽  
Ammonium Nitrogen ◽  
Short Term ◽  
Nitrogen Incorporation ◽  
P Leaching

scholarly journals Effect of Short-Term Low-Nitrogen Addition on Carbon, Nitrogen and Phosphorus of Vegetation-Soil in Alpine Meadow

2021 ◽  
Vol 18 (20) ◽  
pp. 10998
Author(s):  
Zhen’an Yang ◽  
Wei Zhan ◽  
Lin Jiang ◽  
Huai Chen
Keyword(s):  
Alpine Meadow ◽  
Nitrogen Addition ◽  
Ammonium Nitrogen ◽  
N Deposition ◽  
Total Carbon ◽  
N Addition ◽  
Short Term ◽  
Nitrogen And Phosphorus ◽  
Soil Rhizosphere ◽  
And Function

As one of the nitrogen (N) limitation ecosystems, alpine meadows have significant effects on their structure and function. However, research on the response and linkage of vegetation-soil to short-term low-level N deposition with rhizosphere processes is scant. We conducted a four level N addition (0, 20, 40, and 80 kg N ha−1 y−1) field experiment in an alpine meadow on the Qinghai-Tibetan Plateau (QTP) from July 2014 to August 2016. We analyzed the community characteristics, vegetation (shoots and roots), total carbon (TC), nutrients, soil (rhizosphere and bulk) properties, and the linkage between vegetation and soil under different N addition rates. Our results showed that (i) N addition significantly increased and decreased the concentration of soil nitrate nitrogen (NO3−-N) and ammonium nitrogen, and the soil pH, respectively; (ii) there were significant correlations between soil (rhizosphere and bulk) NO3−-N and total nitrogen (TN), and root TN, and there was no strong correlation between plant and soil TC, TN and total phosphorus, and their stoichiometry under different N addition rates. The results suggest that short-term low-N addition affected the plant community, vegetation, and soil TC, TN, TP, and their stoichiometry insignificantly, and that the correlation between plant and soil TC, TN, and TP, and their stoichiometry were insignificant.

scholarly journals Short-term plant legacy alters the resistance and resilience of soil microbial communities exposed to heat disturbance in a Mediterranean calcareous soil

2020 ◽  
Vol 108 ◽  
pp. 105740 ◽  
Author(s):  
Ana Beatriz de Oliveira ◽  
Amélie A.M. Cantarel ◽  
Marie Seiller ◽  
Alessandro Florio ◽  
Annette Bérard ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Calcareous Soil ◽  
Soil Microbial Communities ◽  
Short Term ◽  
Soil Microbial

Unintended effects of biochars on short-term plant growth in a calcareous soil

2014 ◽  
Vol 385 (1-2) ◽  
pp. 87-105 ◽  
Author(s):  
Evan A. N. Marks ◽  
Josep M. Alcañiz ◽  
Xavier Domene
Keyword(s):  
Plant Growth ◽  
Calcareous Soil ◽  
Unintended Effects ◽  
Short Term

Short-term releases of CO2from newly mixed biochar and calcareous soil

2016 ◽  
Vol 32 (4) ◽  
pp. 543-545 ◽  
Author(s):  
R. Cardelli ◽  
M. Becagli ◽  
F. Marchini ◽  
A. Saviozzi
Keyword(s):  
Calcareous Soil ◽  
Short Term

scholarly journals Short-Term Responses of Soil Respiration and C-Cycle Enzyme Activities to Additions of Biochar and Urea in a Calcareous Soil

PLoS ONE ◽  
2016 ◽  
Vol 11 (9) ◽  
pp. e0161694 ◽  
Author(s):  
Dali Song ◽  
Xiangyin Xi ◽  
Shaomin Huang ◽  
Guoqing Liang ◽  
Jingwen Sun ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Enzyme Activities ◽  
Calcareous Soil ◽  
Short Term ◽  
Cycle Enzyme ◽  
C Cycle

Short-term effects of treated wastewater irrigation on Mediterranean calcareous soil

2011 ◽  
Vol 112 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Alicia Morugán-Coronado ◽  
Fuensanta García-Orenes ◽  
Jorge Mataix-Solera ◽  
Victoria Arcenegui ◽  
Jorge Mataix-Beneyto
Keyword(s):  
Calcareous Soil ◽  
Wastewater Irrigation ◽  
Treated Wastewater ◽  
Short Term ◽  
Treated Wastewater Irrigation ◽  
Short Term Effects

scholarly journals Short-term effect of shock ammonium nitrogen load on activated sludge properties

2019 ◽  
Vol 80 (11) ◽  
pp. 2191-2199
Author(s):  
Ksenija Golovko ◽  
Kristina Tihomirova ◽  
Romans Neilands ◽  
Jurijs Resetilovs ◽  
Linda Mezule ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Inorganic Carbon ◽  
Ammonium Nitrogen ◽  
Volume Index ◽  
Second Step ◽  
Short Term ◽  
Short Term Exposure ◽  
Process Failure ◽  
Sludge Properties ◽  
Inorganic Carbon Concentration

Abstract The activated sludge process suffers from rapid load changes of ammonium (NH4), which may result in process failure during wastewater treatment. In this study, the response of activated sludge properties in terms of microfauna composition and sludge volume index (SVI5 and SVI30) on short-term increase of NH4 concentration (from 55 mg/l to 105 mg/l) was evaluated in batch scale reactors over 72 h. The results show that the first-step nitrification (NH4 transformation to nitrite (NO2)) was inhibited after 24 h, whereas the second-step nitrification (NO2 transformation to nitrate (NO3)) was not significantly affected. Sludge volume indices (sedimentation ability characteristics) SVI5 and SVI30 in the reactor with NH4–N shock concentration increased, whereas microfauna diversity decreased (Shannon-Weaver index decreased from 2.12 at 48 h to 1.23 at 72 h) leading to dominance of stalked ciliate Epistylis sp. Notable changes in inorganic carbon concentration (IC) were observed, indicating that rapid decrease of IC concentration leads to nitrification inhibition and challenges the overall process recovery. To conclude, short-term exposure of about two times higher concentration of NH4 caused significant changes in activated sludge properties by inhibiting NH4-oxidizing bacteria, reducing sludge microfauna diversity and deteriorating sludge sedimentation ability.

Carbon and nitrogen losses from undisturbed soil columns under short-term flooding conditions

1995 ◽  
Vol 75 (3) ◽  
pp. 333-341 ◽  
Author(s):  
F. L. Wang ◽  
J. R. Bettany
Keyword(s):  
Inorganic Nitrogen ◽  
Heavy Precipitation ◽  
Ammonium Nitrogen ◽  
Soil Columns ◽  
Short Term ◽  
Flooded Soils ◽  
N Losses ◽  
Undisturbed Soil ◽  
Natural Event ◽  
The Impact

Short-term flooding (few days to several weeks) of usually well-drained soils — often occurring after snowmelt in spring and after heavy precipitation in summer — is a natural event in many regions of the world. Using incubation-leaching and gas sampling techniques in the laboratory, we examined the impact of flooding on the loss of carbon and leaching of nitrogen from five undisturbed soil columns. The soils varied in management, salinity and carbon content. After 8 wk of incubation, the amounts of soluble organic carbon leached by 0.001 M CaCl2 solution from flooded soils ranged from 153 to 630 mg C kg−1. In contrast, only 28–107 mg C kg−1 was leached from nonflooded soils. The amounts of soluble organic nitrogen leached from the flooded soils ranged from 10 to 30 mg N kg−1 compared with 5.9–12 mg N kg−1 from nonflooded soils. In the flooded soils, ammonium nitrogen dominated the total inorganic nitrogen leached (99.5–99.9%) whereas in nonflooded soils leachable N was mainly nitrate and nitrite (97.4–99.9%). Methane was emitted from the flooded soils (10–138 mg C kg−1 over 8 wk). The rate of carbon dioxide evolution in flooded soils increased linearly with time and total evolution ranged from 72 to 552 mg C kg−1, whereas CO2 evolution in the nonflooded soils was steady with total evolution ranging from 159 to 1279 mg C kg−1 after 8 wk. Key words: Prairie and forest soils, short-term flooding, C and N losses, methane emission

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