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《Journal of Anhui Agricultural Sciences》 2008-11
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Study on Effects of Density on Biomass Allocation Pattern in Different Forests

DAI Hai-yan at el(Inner Mongolian Agricultural University,Huhhot,Inner Mongolian 010019,)  
[Objective]This study aimed to analysis the effects of structure and density of the stand in Daqing Mountains on the biomass of various forests.[Method]The biomass of Pinus tabulaeformis,Larix prince rupprecht artificial forest and Betula platyphlla natural secondary forest in Daqing Mountains was measured by methods of cutting the sample tree and direct harvest.[Result] The total biomass of L.prince rupprecht was the highest(52 225.4 kg/hm2) and that of P.tabulaeformis(34 869.0 kg/hm2) and B.platyphlla(26 378.9 kg/hm2) were secondary.The biomass of shrub layer of B.platyphlla was highest(3 251.6-4160.8 kg/hm2) and that of grass layer of P.tabulaeformis(369.3-1 146.9 kg/hm2) was higher than that of B.platy and L.prince rupprecht.The trunk biomass proportion of 25-year-old L.prince rupprecht increased with increment of density within 1 050-1 700 plants/hm2 and each organ biomass of 30-year-old P.tabulaeformis had increasing trend with increment of density within 1 525-3 875 strains/hm2.[Conclusion] Different density had significant influence on the brank biomass and herbaceous biomass of L.prince rupprecht artificial forest and grass layer at 0.05 level.
【Fund】: 教育部重点基金项目(2006026)资助
【CateGory Index】: S718.5
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