Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지

The Pattern of Seed Rain in the Broadleaved-Korean Pine Mixed Forest of Xiaoxing'an Mountains, China

  • Jin, Guangze (School of Forestry, Northeast Forestry University) ;
  • Xie, Xingci (School of Forestry, Northeast Forestry University) ;
  • Tian, Yueying (School of Forestry, Northeast Forestry University) ;
  • Kim, Ji Hong (College of Forest Sciences, Kangwon National University)
  • Received : 2006.09.06
  • Accepted : 2006.10.19
  • Published : 2006.10.30
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Abstract

This study was conducted to understand the pattern and characteristics of seed rain in the broadleaved-Korean pine mixed forest. We established 287 $0.5m^2$ circular seed traps and collected and identified fallen seeds in the traps every two weeks in $150m{\times}150m$ sample plot of the permanent nine hectare of experimental plot in 2005. The overall average density of seed rain was $864.2/m^2$. The seeds of Betula costata Betula costata had the highest number of fallen seeds as $676.0/m^2$ (78.2%), followed by Abies nephrolepis as $57.5/m^2$, B. platyphylla as $37.9/m^2$, Tilia amurensis as $32.2/m^2$, Acer ukurunduense as $17.0/m^2$, A. tegmentosum $14.8/m^2$, and so on. Pinus koraiensis was recorded only $2.5/m^2$ of fallen seeds mainly owing of Korean pine had low rate of purity due to the animal and microbiological predation. Most of seed dispersal have started from the middle to late August and come to an end on the middle of November. The peak time of seed dispersal varied depending on the species. The rate of pure seed by dispersal time varied according to the species, thereupon the aspect of predation and the rate of blasted seed which had influence on the rate of purity also varied according to the species. The density of Korean pine seed rain in the forest gap was significantly different at $P{\leq}0.05$ from in the closed canopy. But the other species had no difference among canopy coverage.

Keywords

Acknowledgement

Supported by : Heilongjiang Postdoctoral Science-Research Foundation, Northeast Forestry University Science-Research Foundation

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