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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (9): 18-25.doi: 10.11707/j.1001-7488.20140903

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Comprehensive Evaluation of Different Transformation Models of Low-Quality Broad-Leaved Mixed Forest in Daxing’an Mountains

Song Qiliang, Dong Xibin   

  1. Northeast Forestry University Harbin 150040
  • Received:2014-01-10 Revised:2014-04-23 Online:2014-09-25 Published:2014-09-30
  • Contact: 董希斌

Abstract:

Strip transformation test zone with different bandwidths and block transformation test zone with different sizes were established in low-quality mixed broad-leaved forest in Daxing'an Mountains, and principal component analysis was applied to comprehensively evaluate the ecological improvement models with the selection of 33 indicators such as biodiversity, water holding characteristics of litter, soil physical properties, soil chemical properties, soil carbon flux and seedling growth status, etc. The results showed that: strip clear-cutting along the hillside transformation model was better than block clear-cutting transformation model, for the strip clear-cutting transformation, the effect of different bandwidths were 10 m bandwidth> 6 m bandwidth> 18 m bandwidth> 14 m bandwidth plots, for the block clear-cutting transformation, the effect of different sizes were 100 m2>25 m2>225 m2>400 m2>900 m2>625 m2, strip along the hillside transformation with 10 m bandwidth model and block transformation with 100 m2 model were most appropriate to Daxing’an Mountains broad-leaved mixed low-quality forest, and its improvement effect were better than the other transformation models.

Key words: Daxing’an Mountains, low-quality broad-leaved mixed forest, transformation models, principal component analysis

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