自然资源学报 ›› 1997, Vol. 12 ›› Issue (3): 243-249.doi: 10.11849/zrzyxb.1997.03.007

• 论文 • 上一篇    下一篇

炼山对杉木人工幼林养分流失影响的定量研究

林思祖1, 林开敏1, 吴擢溪2   

  1. 1. 福建林学院森林与环境研究所, 南平 353001;
    2. 福建尤溪县林科所, 尤溪 365100
  • 收稿日期:1996-05-08 修回日期:1996-08-27 出版日期:1997-09-25 发布日期:1997-09-25
  • 作者简介:林思祖,1953年10月出生,1984年福建林学院硕士毕业,现为福建林学院森林与环境研究所所长、副教 授、南京林业大学博士生。长期从事森林生态环境方面研究。先后共发表30余篇论文,获国家科技进步三等奖、 国家教委科技进步二等奖、福建省科技进步三等奖各一项,为国务院政府特殊津贴获得者。

A QUANTITATIVE STUDY ON THE EFFECTS OF CONTROLLEDBURNING ON THE NUTRIENT LOSS OF THE YOUNG CHINESE FIR PLANTATION

Xie Yinghe1, Hong Jianping1, Jin Zhinan2   

  1. 1. Fujian Forestry College, Nanping, Fujian 353001;
    2. Youqi Institute of Forestry, Youqi, Fujian 365100
  • Received:1996-05-08 Revised:1996-08-27 Online:1997-09-25 Published:1997-09-25

摘要: 根据5a长期定位观察结果,本文应用两模型参数t检验、弹性分析及边际分析法,探讨年时间序列对炼山与对照的杉木人工幼林养分流失的效应。t检验表明,不同处理在年时间序列上的铵态氮、亚硝态氮、硝态氮、磷酸盐、钾、有机质流失模型的B、A参数存在显著差异。弹性分析和边际分析表明,年时间对不同处理的上述养分效应呈负效应,在炼山条件下,上述养分流失的弹性系数分别为-1.215%、-1.214%、-1.215%、-1.215%、-1.241%、-1.214%,上述养分流失的边际量分别为-0.394kg、-0.033kg、-0.365kg、-0.023kg、-30.010kg、-59.421kg。在不炼山处理下,上述养分流失的弹性系数分别为-0.842%、-0.851%、-0.844%、-0.854%、-0.845%、-0.841%,上述养分流失边际量分别为-0.159kg、-0.010kg、-0.085kg、-0.006kg、-12.024kg、-17.767kg。

关键词: 杉木, 炼山, 养分流失, 弹性分析, 边际分析

Abstract: On the basis of the results of a long term fixed location observation of 5 years, this paper uses the two model parameter t test, the elasticity analysis and the marginal analysis for exploring the effects of the annual time series on the nutrient losses of controlled burning and the the constractive young Chinese fir plantation.The t test shows that the B and A parameters of the loss models of amoniacal nitrogen, nitrous nitrogen, nitrate nitrogen,phosphate, potassium and arganic matter on the annual time series are quite different under different treatments. The elasticity analysis and marginal analysis show that the effects of annual time on the above mentioned nutrients under different treatments are negative. Under the controlled burning conditions, the elasticity coefficients of the above mentioned nutrient losses are-1.215%, -1.214%, -1.215%, -1.215%,-1.214% and-1.214%respectively,and their marginal amounts are-0.394 kg,-0.033 kg-0.365 kg, -0.023kg, -30.010 kg and -59.421 kg respectively. Under the treatments without controlled burning, the elasticity coefficients of the above mentioned nutrient losses are -0.842%,-0.851%, -0.844%, -0.854%, -0.845% and -0.841% respectively, and their marginal amounts are -0.159 kg, -0.010 kg, -0.085 kg, -0.006 kg, -12.024 kg and -17.767 kg respectively.

Key words: hicese fir, controlled burning, nutrient loss, elasticity analysis, marginal analysis