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›› 1997, Vol. 33 ›› Issue (zk2): 116-123.

• 论文及研究报告 • 上一篇    下一篇

第二代杉木幼林生态系统生物地球化学循环的研究

田大伦 刘煊章 杨晚华 康文星   

  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

STUDIES ON BIOLOGICAL AND BIOGEOCHEMICAL CYCLES IN A YOUNG SECOND-GENERATION CHINESE FIR PLANTATION

Tian Dalun,Liu Xuanzhang,Yang Wanhua,Kang Wenxing   

  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: 本文根据生态定位研究站观测所取得的数据,对第二代7年生杉木林生态系统中生物地球化学循环进行了研究。结果表明,集水区由降水输入的N、P、K、ca、Mg元素总量为58.110kg/hm2·a,径流输出为42.290kg/hm2·a,净积累15.820kg/hm2·a,说明集水区杉木幼林生态系统处于输出为主的生态恢复过程。

关键词: 第二代杉木林, 集水区, 养分, 生物地球化学

Abstract: This study was conducted to reveal the characteristics of biological and biogeologi-cal cycles in a 7-year-old second-generation Chinese fir plantation.The results showed that the total amount of N,P,K,Ca and Mg in precipitation in thd watershed is 58.110kg/hm2·a,while the amount in runoff is 42.290kg/hm2·a,the net accumulation of nutrients is 15.820kg/hm2·a.It indicates that the young Chinese fir forest ecosystem is just in the ecological recovery process.

Key words: The second-generation of Chinese fir plantation, Watershed, Nutrient, Biogeochemistry