Stand age influence on litter mass of Pinus nigra plantations on dolomite hills in Hungary

Imre Cseresnyés, P. Csontos, Erika Bózsing

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In Hungary, plantations of Pinus nigra Arn. (Austrian pine) involve large areas of dolomite rock grasslands and have caused the impoverishment or local extinction of the original flora. In addition to these conservation concerns, an important economic problem is the flammability of these forests. Fire risk depends on the amount of accumulated flammable organic components. Thus, the purpose of our research was to quantify the mass of litter accumulated in Austrian pine stands and to examine the correlation between litter mass, stand age, and slope aspect. Forty-eight sampling sites were selected with stand ages ranging from 21 to 108 years. Stands represented four age classes and three exposure types. At each sampling site, litter mass was determined in the following three fractions: needles, branches, and cones. The litter fractions showed their maximum quantities in age class 61-80 years (needles = 17 560 kg/ha, branches = 2764 kg/ha, and cones = 2960 kg/ha). For the needle litter, a significant increase with age was detected through the age classes of 21-40, 41-60, and 61-80 years, and then a significant decrease occurred in stands above 80 years. In the case of branch litter, the age-dependent increase was again significant to its maximum quantity, but the decrease in old stands proved to be insignificant. With cone litter, age dependence could not be detected. Exposure of the stands had no effect on the quantities of the three litter fractions. The amount of accumulated litter of Austrian pine stands many times exceed the litter quantity of the rock grasslands (the original vegetation prior to afforestation). Furthermore, it is two or three times higher than the amount of litter reported from native zonal forests of Hungary. Therefore, the Austrian pine stands are subjected to an increased risk of fire, especially in age class 61-80 years.

Original languageEnglish
Pages (from-to)363-370
Number of pages8
JournalCanadian Journal of Botany
Volume84
Issue number3
DOIs
Publication statusPublished - Mar 2006

Fingerprint

Pinus nigra subsp. nigra
Pinus nigra
dolomite
Hungary
litter
plantation
plantations
seed cones
age structure
age class
grasslands
rocks
flammability
afforestation
extinction
flora
grassland
sampling
economics
vegetation

Keywords

  • Austrian pine
  • Branch litter
  • Cone litter
  • Needle litter
  • Slope aspect
  • Stand age

ASJC Scopus subject areas

  • Plant Science

Cite this

Stand age influence on litter mass of Pinus nigra plantations on dolomite hills in Hungary. / Cseresnyés, Imre; Csontos, P.; Bózsing, Erika.

In: Canadian Journal of Botany, Vol. 84, No. 3, 03.2006, p. 363-370.

Research output: Contribution to journalArticle

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