欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (13): 53-55.doi: 10.11924/j.issn.1000-6850.2011-3706

• 林学 园艺 园林 • 上一篇    下一篇

黄土高原刺槐细根生长的波动性研究

胡小宁 郭满才 赵忠 袁志发   

  • 收稿日期:2011-12-09 修回日期:2012-02-25 出版日期:2012-05-05 发布日期:2012-05-05
  • 基金资助:

    黄土高原人工林树种根系分布及其对深层土壤水分的影响

The Volatility of Fine Root Growth of Robinia pseudoacacia in the Loess Plateau

  • Received:2011-12-09 Revised:2012-02-25 Online:2012-05-05 Published:2012-05-05

PDF (PC)

830

摘要：

为了更好地研究黄土高原人工刺槐林根系的分布特征，完善细根生长模型。应用傅里叶级数拟合法研究了细根生长的波动性，修正细根垂直生长模型，建立了含波动项的细根生长模型。根据黄土高原人工刺槐林细根的调查数据，结果表明：含波动项的细根生长模型对数据的拟合精度达到0.9585，提高了垂直生长模型的精度，能够更好地反映细根随土层深度垂直变化的生长状况，对研究黄土高原人工刺槐林根系的生长及其与土壤水分的关系具有指导意义。

关键词: 空壳率, 空壳率

Abstract:

The aim was to study the distributed characteristic system of Robinia pseudoacacia artificial forest root in the Loess Plateau well, and consummate the fine root growth model. The paper studied on the volatility of fine root growth using Fourier series fit method, and established a model with fluctuations by revising the vertical growth model of fine root. It verified that the growth model with fluctuations fits the data more accurate, whose coefficient of determination was 0.9585, and reflect the growth of fine root with soil depth variation well, according to the investigation on fine root of Robinia pseudoacacia in the Loess Plateau. It was useful to research the fine root growth and its relationship with soil water.

中图分类号: