Effects of enhanced UV-B radiation on the growth of five bryophytes in Chanbai Mountains

Yu Huan Wu, Yan Hong Gu, Peng Liu, Z. Tuba

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Five bryophytes (Rhytidium rugosum, Rhytidiadelphus triquetrus, Hylocomium splendens, Hylocomium pyrenaicum, and Polytrichum alpinum) were exposed to 0.2 kJ · m-2 · d-1 visible light under native condition, CK), 3.0 kJ · m-2 · d-1 (simulated dose of UV-B irradiance at the tundra in Changbai Mountains, medium dose of UV-B irradiance, T1), and 6. 0 kJ · m-2 · d-1 (high dose of UV-B irradiance, T2,) to investigate the effects of enhanced UV-B radiation on plant height, biomass, and chlorophyll content. The results indicated that medium and high UV-B radiations decreased the plant height, biomass, and chlorophyll content of R. triquetrus and H. splendens by 32.3%, 62.4%, and 81.3%, and 21.4%, 59.4%, and 62.8%, respectively, and the relative growth rates were negative. Enhanced UV-B radiations had less effect on P. alpinum chlorophyll content but doubled its below-ground biomass, and slightly increased the biomass of R. rugosum. P. alpinum and R. rugosum had higher tolerance against UV-B radiation, while R. triquetrus and H. splendens were more sensitive to UV-B radiation.

Original languageEnglish
Pages (from-to)2139-2143
Number of pages5
JournalChinese Journal of Applied Ecology
Volume18
Issue number9
Publication statusPublished - Sep 2007

Fingerprint

bryophyte
ultraviolet radiation
mountains
mountain
Hylocomium splendens
irradiance
chlorophyll
biomass
belowground biomass
Hylocomium
Rhytidiadelphus
tundra
dosage
Polytrichum
tolerance
radiation
effect
Bryophyta
dose

Keywords

  • Bryophytes
  • Chlorophyll
  • Growth
  • UV-B radiation

ASJC Scopus subject areas

  • Ecology

Cite this

Effects of enhanced UV-B radiation on the growth of five bryophytes in Chanbai Mountains. / Wu, Yu Huan; Gu, Yan Hong; Liu, Peng; Tuba, Z.

In: Chinese Journal of Applied Ecology, Vol. 18, No. 9, 09.2007, p. 2139-2143.

Research output: Contribution to journalArticle

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abstract = "Five bryophytes (Rhytidium rugosum, Rhytidiadelphus triquetrus, Hylocomium splendens, Hylocomium pyrenaicum, and Polytrichum alpinum) were exposed to 0.2 kJ · m-2 · d-1 visible light under native condition, CK), 3.0 kJ · m-2 · d-1 (simulated dose of UV-B irradiance at the tundra in Changbai Mountains, medium dose of UV-B irradiance, T1), and 6. 0 kJ · m-2 · d-1 (high dose of UV-B irradiance, T2,) to investigate the effects of enhanced UV-B radiation on plant height, biomass, and chlorophyll content. The results indicated that medium and high UV-B radiations decreased the plant height, biomass, and chlorophyll content of R. triquetrus and H. splendens by 32.3{\%}, 62.4{\%}, and 81.3{\%}, and 21.4{\%}, 59.4{\%}, and 62.8{\%}, respectively, and the relative growth rates were negative. Enhanced UV-B radiations had less effect on P. alpinum chlorophyll content but doubled its below-ground biomass, and slightly increased the biomass of R. rugosum. P. alpinum and R. rugosum had higher tolerance against UV-B radiation, while R. triquetrus and H. splendens were more sensitive to UV-B radiation.",
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