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林业科学 ›› 2003, Vol. 39 ›› Issue (2): 71-77.doi: 10.11707/j.1001-7488.20030212

• 论文及研究报告 • 上一篇    下一篇

桉树立地生产力与养分生产力参数的确定

吴晓芙 胡曰利   

  1. 中南林学院,株洲412006
  • 收稿日期:2001-09-30 修回日期:1900-01-01 出版日期:2003-03-25 发布日期:2003-03-25

DETERMINATION OF SITE & NUTRIENT PRODUCTIVITY PARAMETERS FOR EUCALYPTUS FOREST

Wu Xiaofu,Hu Yueli   

  1. Central South Forestry University Zhuzhou412006
  • Received:2001-09-30 Revised:1900-01-01 Online:2003-03-25 Published:2003-03-25

摘要:

桉树试验林样本分析结果表明,桉树树杆中氮、磷、钾养分浓度的倒数与养分吸收量呈明显的负线性相关。基于这一相关性,对实测的数据作回归分析,估测的立地生产力极限和养分生产力参数值,以及相应的立地养分效应曲线具有较高的精确度。本文为研究林木生长和营养的动态函数关系提供了新的思路和方法。

关键词: 桉树, 养分浓度, 养分吸收, 养分生产力参数, 立地生产力极限

Abstract:

Correlation analysis was conducted using stem samples collected from Eucalyptus trial stands. A negative linear correlation between the reciprocal of nutrient concentration and the total amount of nutrient uptake in tree stem was observed for the three tested elements, nitrogen, phosphorus and potassium. Based on this linear relationship, the site productivity potential and the nutrient productivity parameter, as well as the site & nutrient effect curves were determined using the measured data with relatively high level of accuracy. The present study provides a new way for approach to the dynamic functional relationship between forest growth and nutrition.

Key words: Eucalyptus ABL12, Nutrient concentration, Nutrient uptake, Nutrient productivity parameter, Site productivity limit