自然资源学报

自然资源学报 ›› 2000, Vol. 15 ›› Issue (2): 133-137.doi: 10.11849/zrzyxb.2000.02.008

• 论文 • 上一篇    下一篇

不同收获与清林方式对杉木林养分的影响

杨玉盛, 陈光水, 谢锦升, 俞新妥   

  1. 福建林学院资源与环境系,福建南平353001
  • 收稿日期:1999-05-04 修回日期:1999-08-12 出版日期:2000-06-25 发布日期:2000-06-25
  • 作者简介:杨玉盛(1964-),男,福建仙游人,教授,博士,主要从事人工林长期生产力、退化生态系统恢复与重 建、土壤抗蚀性等研究。
  • 基金资助:

    福建省自然科学基金资助项目,(F991);福建省高校“211”重点学科——森林培育资助项目

Effect of harvesting and cleaning on nutrition in Chinese fir plantation

YANG Yusheng, CHEN Guangshui, XIE Jinsheng, YU Xintuo   

  1. Fujian College of Forestry,Nanping,Fujian 353001,China
  • Received:1999-05-04 Revised:1999-08-12 Online:2000-06-25 Published:2000-06-25

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23 | 3

摘要： 对三代杉木林全株、全木和传统收获及传统和全木收获后火烧清理迹地林分营养元素变化进行了研究 ,结果表明 :杉木林采用全株收获和全木收获的营养元素损失量分别是传统收获的1 99倍和1 64倍 ;采伐剩余物火烧导致林地生态系统中N和P2O5 大量损失 ;采用传统收获及随后火烧清理采伐剩余物 ,N和P2O5 损失量比仅采用全株或全木收获的均高。若缩短轮伐期 ,则可能导致立地N和P2O5 的严重亏缺 ;全株或全木收获导致大量盐基离子移出林地 ,可能导致土壤较为严重的酸化趋势。

关键词: 全株收获, 全木收获, 传统收获, 火烧, 杉木林, 养分损失

Abstract: The trasferrence of nutrient elements caused by three different harvesting systems of complete tree harvesting,whole tree harvesting and conventional harves ting under the third rotational stand of Chinese fir were compared in this paper.The result indicated that the loss of nutrient elements due to complete tree and whole tree harvesting was 1 99 and 1 64 times that of due to conventional harvesting,respectively.Slash burning resulted in great loss of N and P2O5 in forest ecosystem.The loss of N and P2O5 from stands due to adopting conventional silvicultural system (harvesting and following burning) was both higher than that of whole tree and complete tree harvesting without burning.Thus,shortening rotation length may cause serious deficiency of site N and P2O5 on site.Complete tree and whole tree harvesting can cause substantial base ion removal from the stand and resulted in seriously soil acidification.

Key words: whole tree harvesting, conventional harvesting, burning, Chinese fir stand, nutrition loss