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林业科学 ›› 1999, Vol. 35 ›› Issue (3): 16-21.

• 论文及研究报告 • 上一篇    下一篇

人工马尾松阔叶混交林矿质营养循环的研究

李飞,陈永瑞   

  1. 中国科学院自然资源综合考察委员会 北京 100101
  • 收稿日期:1997-10-28 出版日期:1999-05-25 发布日期:1999-05-25

A STUDY ON THE NUTRIENT CYCLING OF PINUS MASSONIANA FOREST MIXED WITH BROAD-LEAVED TREES

Fei Li,Yong rui Chen   

  1. Commission for Integrated Survey of Natural Resources, Academia Sinica Beijing 100101
  • Received:1997-10-28 Online:1999-05-25 Published:1999-05-25

摘要:

利用面积为21370m2的天然小流域,研究了人工马尾松阔叶混交林内K、P、Ca、Mg、Zn、Cu、Fe、Mn8种矿质元素1993~1995年间积累、留存、淋溶、归还、吸收等养分的迁移、循环过程。通过分析矿质元素伴随天然降雨的输入与地表径流的输出,得出该生态系统养分收支状况在总体上处于盈余状态;并且有较高的利用系数和循环系数等。

关键词: 小流域, 马尾松阔叶林, 矿质营养, 循环

Abstract:

In a small watershed with an area 21370 m2 covered, with the mixed forest of Pinus massoninana and broad-leaved trees, the cycling process of K、P、Ca、Mg、Zn、Cu、Fe and Mn, including their accumulation, retention, leaching, return, uptake and average budget has been studied from 1993 to 1995.The experimental results show that the total amount of mineral elements in the rainfall input into the mixed forest ecosystem was more than the output from the system in the runoff from 1993 to 1995, and the stand was on positive succession with higher using and cycling efficiencies.

Key words: Small watersheds, Pinus massoninana Mixed forest, Mineral nutrient, Cycling