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林业科学 ›› 2012, Vol. 48 ›› Issue (11): 117-123.doi: 10.11707/j.1001-7488.20121119

• 研究简报 • 上一篇    下一篇

大兴安岭低质林改造后土壤肥力综合评价

纪浩, 董希斌   

  1. 东北林业大学 哈尔滨 150040
  • 收稿日期:2012-01-11 修回日期:2012-04-11 出版日期:2012-11-25 发布日期:2012-11-25
  • 通讯作者: 董希斌

Comprehensive Evaluation of Soil Fertility after Transformation of the Low-Quality Forest in the Daxing’anling Mountains

Ji Hao, Dong Xibin   

  1. Northeast Forestry University Harbin 150040
  • Received:2012-01-11 Revised:2012-04-11 Online:2012-11-25 Published:2012-11-25

关键词: 低质林, 改造, 评价, 土壤肥力, 大兴安岭

Abstract:

This study studied the changes of soil physical and chemical properties and carbon flux of broadleaved mixed secondary growth stands and birch coppice low-quality forests after clearcutting with various bandwidths in the Daxing’anling Mountains. Pinus sibirica, Pinus sylvestris var. mongolica and Larix gmelinii were planted after cutting. An improved AHP method was used for comprehensively evaluating the sites’ fertility after the treatments. Results showed that the soil fertility quality index was higher than the control site for all treated sites except the broadleaved secondary P. sibirica stands in the 6 m cutting strip, where the soil fertility index was slightly less than the control site. In all the low-yield broadleaved secondary stand improvement treated sites, the soil fertility quality index of the site with the L. gmelinii stand planted in the 14 meter cutting strip showed the highest value of 0.744. In the sites after clearcutting birch coppice low-quality forests, P. sylvestris var. mongolica stands in the 14 meter cutting strip had the highest soil quality index of 0.617. According to the Spearman correlation analysis, major factors affecting soil fertility include soil organic matter, total nitrogen and hydrolysis phosphorus content.

Key words: low-quality forest, stand improvement, evaluation, soil fertility, the Daxing&rsquo, anling Mountains

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