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长白山区林下主要灌木生物量估算与分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2011年05期
Page:
45-50
Column:
研究论文
publishdate:
2011-09-30

Article Info:/Info

Title:
Estimation and analysis of understory shrub biomass in Changbai Mountains
Author(s):
HE Lieyan1 KANG Xingang1* FAN Xiaoli1 GAO Yan*
1.Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China;2.Wangqing Forestry Bureau, Jilin Province, Wangqing 133200,China
Keywords:
Changbai Mountains biomass models treelike plant shrublike plant
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2011.05.010
Document Code:
A
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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Last Update: 2011-09-30