Organic nitrogen addition causes decoupling of microbial nitrogen cycles by stimulating gross nitrogen transformation in a temperate forest soil

Geoderma ◽  
2021 ◽  
Vol 385 ◽  
pp. 114886
Author(s):  
Mingzhu Lu ◽  
Shulan Cheng ◽  
Huajun Fang ◽  
Meng Xu ◽  
Yan Yang ◽  
...  
Keyword(s):  
Forest Soil ◽  
Temperate Forest ◽  
Organic Nitrogen ◽  
Nitrogen Addition ◽  
Nitrogen Transformation ◽  
Microbial Nitrogen ◽  
Nitrogen Cycles

Organic nitrogen addition suppresses fungal richness and alters community composition in temperate forest soils

2018 ◽  
Vol 125 ◽  
pp. 222-230 ◽  
Author(s):  
Lauren C. Cline ◽  
Julia A. Huggins ◽  
Sarah E. Hobbie ◽  
Peter G. Kennedy
Keyword(s):  
Community Composition ◽  
Forest Soils ◽  
Temperate Forest ◽  
Organic Nitrogen ◽  
Nitrogen Addition ◽  
Temperate Forest Soils

scholarly journals No effect of long-term soil warming on diffusive soil inorganic and organic nitrogen fluxes in a temperate forest soil

2021 ◽  
Vol 158 ◽  
pp. 108261
Author(s):  
Jakob Heinzle ◽  
Wolfgang Wanek ◽  
Ye Tian ◽  
Steve Kwatcho Kengdo ◽  
Werner Borken ◽  
...  
Keyword(s):  
Forest Soil ◽  
Temperate Forest ◽  
Organic Nitrogen ◽  
Soil Warming ◽  
Nitrogen Fluxes ◽  
Inorganic And Organic Nitrogen ◽  
Inorganic And Organic ◽  
Soil Inorganic

scholarly journals Rainfall reduction amplifies the stimulatory effect of nitrogen addition on N2O emissions from a temperate forest soil

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Shicong Geng ◽  
Zhijie Chen ◽  
Shijie Han ◽  
Fang Wang ◽  
Junhui Zhang
Keyword(s):  
Forest Soil ◽  
Temperate Forest ◽  
Nitrogen Addition ◽  
N2o Emissions ◽  
Rainfall Reduction

scholarly journals Vertical partitioning of CO2 production within a temperate forest soil

2007 ◽  
Vol 13 (4) ◽  
pp. 922-922 ◽  
Author(s):  
ERIC A. DAVIDSON ◽  
KATHLEEN E. SAVAGE ◽  
SUSAN E. TRUMBORE ◽  
WERNER BORKEN
Keyword(s):  
Forest Soil ◽  
Temperate Forest ◽  
Co2 Production ◽  
Vertical Partitioning

scholarly journals Different forms of nitrogen deposition show variable effects on soil organic nitrogen turnover in a temperate forest

2022 ◽  
Vol 169 ◽  
pp. 104212
Author(s):  
Jihui Tian ◽  
Kai Wei ◽  
Tao Sun ◽  
Nan Jiang ◽  
Zhenhua Chen ◽  
...  
Keyword(s):  
Nitrogen Deposition ◽  
Temperate Forest ◽  
Organic Nitrogen ◽  
Soil Organic Nitrogen ◽  
Nitrogen Turnover

scholarly journals Modeling Nitrogen Decrease in Water Lettuce Ponds from Waste Stabilization Ponds

2018 ◽  
Vol 31 ◽  
pp. 04004
Author(s):  
Gitta Agnes Putri ◽  
Sunarsih
Keyword(s):  
Organic Nitrogen ◽  
Nitrogen Transformation ◽  
Rate Of Change ◽  
Nitrogen Compounds ◽  
Water Lettuce ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds ◽  
Waste Stabilization ◽  
Bacterial Uptake ◽  
Nitrate And Nitrite

This paper presents about the dynamic modeling of the Water Lettuce ponds as a form of improvement from the Water Hyacinth ponds. The purpose of this paper is to predict nitrogen decrease and nitrogen transformation in Water Lettuce ponds integrated with Waste Stabilization Ponds. The model consists of 4 mass balances, namely Dissolved Organic Nitrogen (DON), Particulate Organic Nitrogen (PON), ammonium (NH4+), Nitrate and Nitrite (NOx). The process of nitrogen transformation which considered in a Water Lettuce ponds, namely hydrolysis, mineralization, nitrification, denitrification, plant and bacterial uptake processes. Numerical simulations are performed by giving the values of parameters and the initial values of nitrogen compounds based on a review of previous studies. Numerical results show that the rate of change in the concentration of nitrogen compounds in the integration ponds of waste stabilization and water lettuce decreases and reaches stable at different times.

Organic nitrogen stimulates the heterotrophic nitrification rate in an acidic forest soil

2015 ◽  
Vol 80 ◽  
pp. 293-295 ◽  
Author(s):  
Jinbo Zhang ◽  
Jing Wang ◽  
Wenhui Zhong ◽  
Zucong Cai
Keyword(s):  
Forest Soil ◽  
Organic Nitrogen ◽  
Heterotrophic Nitrification ◽  
Nitrification Rate

scholarly journals Changes in the nitrogen biogeochemical cycle in sediments of an urban river under different dissolved oxygen levels

2018 ◽  
Vol 19 (4) ◽  
pp. 1271-1278 ◽  
Author(s):  
Yaping Zhang ◽  
Xiaohong Ruan ◽  
Wenli Shi
Keyword(s):  
Dissolved Oxygen ◽  
Nitrogen Cycling ◽  
Quantitative Polymerase Chain Reaction ◽  
Nitrogen Transformation ◽  
Urban River ◽  
Ammonia Oxidizing Bacteria ◽  
Urban Rivers ◽  
Ammonium Oxidation ◽  
Microbial Nitrogen ◽  
Concentration Changes

Abstract Urban rivers are considered as a hot spot of microbial nitrogen cycling due to extensive N loading. However, microbial nitrogen transformation dynamics in urban rivers with different dissolved oxygen (DO) conditions are still unclear. This study investigated the effects of DO concentration changes (anaerobic to aerobic) in overlying water on nitrogen-cycling gene abundance in incubation conditions using sediment from a typical urban river in the Yangtze River Delta. Quantitative polymerase chain reaction (qPCR) results revealed that the abundances of the nitrification gene amoA, denitrification gene nirS/K, norB, nosZ, and anammox gene hzo increased by one to two orders of magnitude from anaerobic to aerobic conditions. Ammonia-oxidizing archaea (AOA) predominated the ammonium oxidation microbial populations, about tenfold more than the ammonia-oxidizing bacteria (AOB) populations. Significant correlations were found among the abundances of AOA-amoA, AOB-amoA, nirS, nirK, and hzo genes, implying a close coupling of aerobic ammonium oxidation (AAO), denitrification, and anammox processes at the molecular level. Moreover, the nitrogen transformation rates were calculated using a box model linking the measured dissolved inorganic nitrogen species. The contribution of anammox to N2 production was 85% under saturated treatment, and the AAO rate was significantly positive correlated to the anammox rate. Our results suggested that coupled AAO and anammox might be the dominant pathway for reactive nitrogen removal in urban rivers with elevated DO levels.

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