Estimation and analysis of understory shrub biomass in Changbai Mountains

HE Lieyan, KANG Xingang*, FAN Xiaoli, GAO Yan*

Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2011, Vol. 35 ›› Issue (05) : 45-50.

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南京林业大学学报（自然科学版）
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Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2011, Vol. 35 ›› Issue (05) : 45-50. DOI: 10.3969/j.jssn.1000-2006.2011.05.010

Estimation and analysis of understory shrub biomass in Changbai Mountains

  • HE Lieyan1, KANG Xingang1*, FAN Xiaoli1, GAO Yan*
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Abstract

With 10 common species of understory shrub in three natural forest types，including SpruceFir Mixed forests, PolarBirch secondary forests and Larch plantation in Jinggouling Plantation Changbai Mountains as test objects, crown area(Ac),project volume(Vc), square ground diameter by height(D2H) were used as variables in component biomass models. According to the growth forms, treelike(single trunked) mixed models and shrublike(multistemmed or low branching) mixed models were built. The shrub biomass along with its distribution in different species and components were investigated using the bestfit models which were judged by high R2 and low SEE. The results showed that the bestfit speciesspecific component model forms were linear, quadratic or cubic equations, the variables in stem and branch models were D2H or Vc, and in leaf models were Ac or Vc ,while in root models were D2H. The bestfit mixed model forms were power or cubic equation, the variables in these models were D2H while the branch of mixed model of shurblike plants was Vc .The biomass of understory shrub in natural SpruceFir Mixed forests, PolarBirch secondary forests and Larch plantation was 4 013.59,3 950.66 and 4 649.36 kg/hm2 respectively, and treelike plants make more biomass contribution than shrublike plants.

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HE Lieyan, KANG Xingang*, FAN Xiaoli, GAO Yan*. Estimation and analysis of understory shrub biomass in Changbai Mountains[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2011, 35(05): 45-50 https://doi.org/10.3969/j.jssn.1000-2006.2011.05.010

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