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《Forest Engineering》 2009-03
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Study on Intraspecific and Interspecific Competition of the Populus davidiana Secondary Forest in Mao'ershan Mountains Area

Yan Yan,Li Fengri(Northeast Forestry University,Harbin 150040)  
Based on the tally data of the fixed sampling plot M712 and M720 of Populus davidiana secondary forest,Hegyi competition index of individual tree was used to analyze the intraspecific and interspecific competition intensity of natural Populus davidiana secondary forest in Mao'ershan Mountains Forest Farm quantitatively.The research results showed that the competition intensity of Populus davidiana secondary forest decreased gradually as the diameter classes of forest.The intraspecific competition within the Populus davidiana secondary forest was weaker than the interspecific competition between Populus davidiana and associated tree species namely Betula castata.The intraspecific and interspecific competition intensity of Populus davidiana secondary forest ranked in Betula castata,Betula platyphylla,Quercus mongolica,Prunus armeniaca,Phellodendron amurense,Populus davidiana,Juglans mandshurica,Acer saccharum,Ulmus pumila,Fraxinus mandshurica,Tilia amurensis,Syringa amurensis,Betula,Sorbus pohuashanensis,Fraxinus rhynchophulla,Acer mono.
【Fund】: 国家十一五科技支撑项目(2006BAD03A08)
【CateGory Index】: S718.5
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