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Bulletin of Botanical Research ›› 1994, Vol. 14 ›› Issue (4): 439-447.

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STUDY ON THE MEASURMENT METHOD OF THE ECOLOGICAL NICHE OF KOREAN PINE AND LARCH POPULATION IN ARTIFICIAL FOREST COMMUNITY

Chen Xiao-qun1, Yang Kai1, Chen Dan-lin2   

  1. 1. The Forestry sciences Institute or reilongjiang Province, Harbin 150040;
    2. Institute of Materials Harbin Boiler Workes, Harbin 150040
  • Received:1994-05-01 Online:1994-12-15 Published:2016-06-14

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Abstract: Using connection analysis of grey theory, We got the dominant ecological factors affecting the productivity of artificial Korean Pine forest community and artificial Larch forest community. On one-dimension and multi-dimension graclient of dominant ecological factors, We advanced niche calculation formula group:Nij(N1)=???(Pij×qij)1/2,Pij(SDR4)=B'+D'+C'+H'/4,qij(光)=(1-Ii)×Wij、qij(Water)=K×Wij,qij(Organic matter)=Wij/W·N(n)=√N12+N22+…+Nn2,The calcalation results show that the highest tree-height grade population of the same aged appeared the resource niche that the soil water content exceeds 25%, soil organic matter content more than 6%.

Key words: Ecological niche, Korean pine population, Larch population, Tree-height grade, Artificial forest community.