Understory light regimes in old-growth and second-growth temperate forests of Northeastern China

Fei Lin*, Liwei Wang, Zuoqiang Yuan, Dingliang Xing, Xuejiao Bai, Xugao Wang, Zhanqing Hao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Light penetration through the forest canopy affects the growth and survival of tree regeneration. We compared understory light regimes in an old-growth forest and a second-growth forest using hemispherical photography. From each photograph, we ascertained canopy openness (CO), light transmission (gap light index, GLI), sunfleck characteristics, and the spatial distribution of CO and GLI. Old-growth and second-growth forests differed significantly in CO, GLI and the mean number of sunflecks per day. The old-growth forest plot was more open and heterogeneous in its openness than the second-growth forest plot. Sunflecks were more abundant in the second-growth plot, but sunfleck duration was not significantly different between the two forest types. Our study suggests that the characteristics of understory light may be a distinguishing indicator of the different forest types.

Original languageEnglish
Title of host publication2011 International Conference on Consumer Electronics, Communications and Networks, CECNet 2011 - Proceedings
Pages1870-1873
Number of pages4
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 International Conference on Consumer Electronics, Communications and Networks, CECNet 2011 - XianNing, China
Duration: 16 Apr 201118 Apr 2011

Publication series

Name2011 International Conference on Consumer Electronics, Communications and Networks, CECNet 2011 - Proceedings

Conference

Conference2011 International Conference on Consumer Electronics, Communications and Networks, CECNet 2011
Country/TerritoryChina
CityXianNing
Period16/04/1118/04/11

Keywords

  • canopy openness
  • forest types
  • light transmission
  • sunflecks
  • understory light

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