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CONCENTRATIONS OF SOIL NUTRIENTS BEFORE AND AFTER FIRE

Publication: Canadian Journal of Soil Science
February 1970

Abstract

Large amounts of nutrients from the L-H horizons and 0–2 cm of mineral soil were either redistributed at mineral soil depths or removed by leaching within a 15-month period after severe fire in jack pine barren lands in northern Ontario. Losses and redistribution by leaching were attributed to the large decrease in amount of organic matter (79 to 91%) and a decrease in exchange capacity of the L-H horizons as a result of burning. Increased solubility of the nutrients deposited in ash contributed to their vulnerability to leaching.Leaching of sodium, potassium and calcium was greatest during the first 3-month period after fire. Differential leaching resulted from the differing adsorption properties of the cations; more potassium was leached in comparison with calcium. Decreases in levels of extractable iron, aluminum and phosphorus may have been partly the result of their fixation in unavailable form, but leaching was responsible for 48% of the decrease in extractable phosphorus from the surface horizons over the 15-month period.

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cover image Canadian Journal of Soil Science
Canadian Journal of Soil Science
Volume 50Number 1February 1970
Pages: 17 - 29

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Version of record online: 19 March 2011

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12. References
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22. References
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32. Soil nutrient distributions of mesquite-dominated desert grasslands: changes in time and space
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34. Nitrogen-fixation by Acacia dealbata and changes in soil properties 5 years after mechanical disturbance or slash-burning following timber harvest
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37. Impacts of wild fire severity and salvage harvesting on the nutrient balance of jack pine and black spruce boreal stands
38. Solutes in overland flow following fire in eucalyptus and pine forests, northern Portugal
39. MORPHOLOGICAL AND CHEMICAL PROPERTIES OF SOILS ALONG A VEGETATION GRADIENT AFFECTED BY FIRE IN HONG KONG
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43. REFERENCES
44. Growth and elemental content of several sagebrush-steppe species in unburned and post-wildfire soil and plant effects on soil attributes
45. Solution chemistry profiles of mixed-conifer forests before and after fire
46. Natural regeneration of Pinus resinosa on burned and unburned sites in Newfoundland
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49. Forest vegetation and origin of some spodic horizons, Michigan
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55. The effect of regeneration burning upon the nutrient status of soil in two forest types in southern Tasmania
56. Fire and Nutrient Cycling in Temperate Ecosystems
57. Fire as an Ecological Factor
58. Simulation of wildfire effects on the nitrogen cycle of a Pinus banksiana ecosystem in New Brunswick, Canada
59. Modification of the soil environment by vegetation fires, with particular reference to nitrogen transformations: A review
60. The Role of Fire in the Degradation of Ecosystems
61. Microfungal variations relative to post-fire changes in soil environment
62. Chapter 5 Soil Organic Carbon, Nitrogen and Fertility
63. Effects of Fire on Birds and Mammals
64. Fire in the Boreal Forest

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