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›› 1997, Vol. 33 ›› Issue (zk2): 148-156.

• 论文及研究报告 • 上一篇    下一篇

天然次生白栎林营养元素的生物循环

刘煊章 田大伦 朱小年 高跃明   

  1. 中南林学院 株洲412006
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-11-25 发布日期:1997-11-25

BIOLOGICAL CYCLING OF THE NUTRIENT ELEMENTS IN THE NATURAL SECONDARY QUERCUS FABRI FOREST

Liu Xuanzhang,Tian Dalun,Zhu Xiaonian,Gao Yueming   

  1. Central-South Forestry College Zhuzhou 412006
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-11-25 Published:1997-11-25

摘要: 对湖南沅陵天然次生自栎林内9种营养元素(N、P、K、Ca、Mg、Fe、Mn、zn、Cu)的积累、分配和生物循环进行了研究。结果表明,9种营养元素在系统中的总积累量为192.08t/hm2。系统乔木层营养元素的吸收量为O.179t/hm2·a,归还量为O.125t/hm2,/sup>·a,平均循环比率为O.7。该项研究,可为培育人工混交林提供基础数据。

关键词: 天然次生林, 营养元素, 生物循环

Abstract: The accumulation distribution and biological cycling of nine nutrient elements (N、P,K,Ca、Mg,Fe,Mn,Zn、Cu) in a natural secondary Quercus fabri forest in Yuanling,Hunan,was studied.The results indicated that the total accumulation of the nine nutri-ent elements in the ecosystem is 192.08t/hm2.In arbor layer,the annual absorbtion is 0.179t/hm2·a。the annual return is 0.125t/hm2·a,and the average cycling rate is 0.7.This research could provide base data for culturing artifieal mixed forests.

Key words: Natural secondary forest, Quercus fabri, Nutrient elements, Biological cycling