Document


Title

Prediction of soil nitrogen availability in forest ecosystems: a literature review
Document Type: Journal
Author(s): D. R. Keeney
Publication Year: 1980

Cataloging Information

Keyword(s):
  • age classes
  • agriculture
  • bibliographies
  • biomass
  • ecosystem dynamics
  • fertilization
  • fertilizers
  • forest management
  • forest types
  • litter
  • mineral soils
  • nitrogen
  • nitrogen fixation
  • Pinus radiata
  • Pinus taeda
  • precipitation
  • Pseudotsuga menziesii
  • sampling
  • soils
  • statistical analysis
  • trees
Region(s):
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 38426
Tall Timbers Record Number: 13029
TTRS Location Status: In-file
TTRS Call Number: Fire File DDW
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.

Description

The increasing interest in the use of N fertilizers to stimulate forest growth is prompting consideration of laboratory soil testing methods to predict the probability of N response. However, even in tilled agricultural systems, laboratory tests for N availability are not widely accepted. To be successful in predicting N response in the forest ecosystem, many additional factors than those used in agriculture must be considered. These include the sources and sinks of N and the internal redistribution of N in the trees, as well as intensity of management. Problems also exist with selection of the sample. since the forest floor litter oftentimes constitutes a major reservoir of N. Availability of this N will be difficult to estimate. Spatial variability also presents formidable obstacles in obtaining a valid sample. However, some success with N as availability tests has been reported in the Douglas-fir ecosystems of western United States, particularly with the anaerobic incubation method. Further progress will require considerable research effort and careful attention to the N cycle. © Society of American Foresters, Bethesda, MD. Abstract reproduced by permission.

Online Link(s):
Citation:
Keeney, D. R. 1980. Prediction of soil nitrogen availability in forest ecosystems: a literature review. Forest Science, v. 26, no. 1, p. 159-171.