Factors affecting nitrogen concentration of fine roots in forest communities: Regression analysis of literature data

Xiwei Yin, James A. Perry

Research output: Contribution to journalComment/debatepeer-review

9 Scopus citations

Abstract

Literature data on nitrogen concentration of live fine roots (≤10 mm in diameter) in forest communities were analyzed by multiple linear regression. After appropriate transformations, root diameter, minimum monthly mean temperature, forest origin, and forest type together accounted for 93.2% of variation in N concentration. We suggest the following possible ecological bases: fine-root N concentration (1) was negatively related to root diameter because of increased percent old tissue and structural material with root size, (2) was negatively related to minimum monthly mean temperature because of a combined effect of soil available N, root absorption capacity, and carbon production, and/or because of selection pressure of cold winter on the genetic trait of higher N in fine roots, (3) was higher in plantations than in natural stands because of species and site selections and management history, and (4) was higher in broad-leaved than needle-leaved forests because of different N cycling rates.

Original languageEnglish (US)
Pages (from-to)374-382
Number of pages9
JournalForest Science
Volume37
Issue number1
StatePublished - Dec 1 1991

Keywords

  • Forest origin
  • Forest type
  • Minimum monthly mean temperature
  • Root diameter

Fingerprint Dive into the research topics of 'Factors affecting nitrogen concentration of fine roots in forest communities: Regression analysis of literature data'. Together they form a unique fingerprint.

Cite this