Measurement of Net Nitrogen and Phosphorus Mineralization in Wetland Soils Using a Modification of the Resin-Core Technique

2011 ◽  
Vol 75 (2) ◽  
pp. 760-770 ◽  
Author(s):  
Gregory B. Noe
Keyword(s):  
Wetland Soils ◽  
Nitrogen And Phosphorus ◽  
Resin Core ◽  
Phosphorus Mineralization

Spatial Variability of Nitrogen and Phosphorus in Wetland Soils of the Yellow River Delta, China

2012 ◽  
Vol 610-613 ◽  
pp. 1028-1032
Author(s):  
Chen Huang ◽  
Jun Hong Bai ◽  
Jun Jing Wang ◽  
Qiong Qiong Lu ◽  
Qing Qing Zhao ◽  
...  
Keyword(s):  
Spatial Variability ◽  
Soil Nitrogen ◽  
Yellow River ◽  
Yellow River Delta ◽  
River Delta ◽  
The Yellow River ◽  
Model Parameters ◽  
Wetland Soils ◽  
Nitrogen And Phosphorus ◽  
The Yellow River Delta

Spatial variability of soil nitrogen and phosphorus in the Yellow River Delta was investigated using geostatistical method. Our results showed moderate variation in TN and TP and high variations in NH4+-N and AP. The best semi-variogram model for each nutrient was identified. The model parameters suggested that the structure variance dominated the total variance of TN, TP and NH4+-N, while the spatial variability of AP was relatively random. The spatial variation scales of soil nitrogen and phosphorus are similar.

Carbon, nitrogen and phosphorus mineralization of tree leaves and manure

2000 ◽  
Vol 30 (4) ◽  
pp. 298-305 ◽  
Author(s):  
P. L. Mafongoya ◽  
P. Barak ◽  
J. D. Reed
Keyword(s):  
Tree Leaves ◽  
Nitrogen And Phosphorus ◽  
Phosphorus Mineralization

Slash burning, faunal composition, and nutrient dynamics in a Eucalyptus grandis plantation in South AfricaThis article is one of a selection of papers published in the Special Forum on Towards Sustainable Forestry — The Living Soil: Soil Biodiversity and Ecosystem Function.

2007 ◽  
Vol 37 (2) ◽  
pp. 226-235 ◽  
Author(s):  
R.L. Nadel ◽  
M.C. Scholes ◽  
M.J. Byrne
Keyword(s):  
Nutrient Dynamics ◽  
Eucalyptus Grandis ◽  
Nitrogen And Phosphorus ◽  
Soil Biodiversity ◽  
Faunal Composition ◽  
Faunal Diversity ◽  
Phosphorus Mineralization ◽  
The Tropics ◽  
Slash Burning

The sustainability of exotic commercial plantations is dependent on the conservation of soil nutrients, especially on the ancient, leached soils of the tropics, particularly when limited fertilization is practiced. In Eucalyptus grandis W. Hill ex Maid. plantations in South Africa, the site is usually burned following harvest and prior to replanting, potentially causing a disruption of soil faunal function and losses of nutrients associated with burning and removal of slash residues. The aim was to study the effect of fire on nutrient dynamics and invertebrate faunal composition. The in situ nitrogen and phosphorus mineralization rates and invertebrate faunal composition were measured in six randomly located plots — three burned and three unburned — prior to and after a low-intensity fire. Results indicate that within the burned plots, phosphorus availability was enhanced 10-fold within the first month following the fire. Invertebrate faunal diversity was low both prior to and after burning, with ants constituting the highest number. Invertebrate faunal composition was more markedly influenced by season than by the fire, with millipedes present in the majority of plots in spring and ants dominating in summer.

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