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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (12): 94-97.

• 林学 园艺 园林 • 上一篇    下一篇

毛白杨无性系叶面积的回归测算

赵燕1,董雯怡1,李吉跃1,2,沈应柏3,张志毅3   

  • 收稿日期:2010-02-05 修回日期:2010-04-03 出版日期:2010-06-20 发布日期:2010-06-20
  • 基金资助:

    十一五”国家科技支撑计划课题“杨树速生丰产林培育关键技术研究与示范”

Regression Estimation of Leaf Area for Clones of Populus tomentosa

Zhao Yan1, DongWenyi1 , Li Jiyue1,2, Shen Yingbai3 , Zhang Zhiyi3   

  • Received:2010-02-05 Revised:2010-04-03 Online:2010-06-20 Published:2010-06-20

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969

摘要：

利用快速、精准的方法，建立了4个不同毛白杨无性系的叶面积与其叶长、叶宽、以及叶长×叶宽之间的线性回归和幂函数回归方程。结果表明：1）毛白杨不同的无性系叶形指数差异较大，不同无性系的回归方程也不一样，应针对无性系计算叶面积；2）叶片生长的不同阶段叶面积的回归方程不同，因此应针对叶片的不同生长阶段确定回归方程。3）一元线性回归方程中，叶面积和叶长、叶宽的乘积的相关性最好，但只适用于功能叶片的测量；而幂函数回归方程无叶片大小限制，叶面积和叶宽的相关性较好并且测量方便，毛白杨无性系50号叶面积和叶宽幂函数回归方程为LA=1.0014×W1.8295，83号回归方程为LA=0.863×W1.832，30号回归方程为LA=0.554×W2.051，B331号回归方程为LA=1.639×W1.600。因此在今后的生产实践中，可通过测定4个毛白杨无性系的叶宽，利用其幂函数回归方程，估算叶面积。

关键词: 能值, 能值, 生态足迹, 生态承载力, 生态赤字, 可持续发展, 福州

Abstract:

Rapid and precise methods were used to establish liner and exponent function regression equations between leaf area and leaf length, leaf width, or product of leaf length and leaf width for four clones of Populus tomentosa. The results showed that：1) Leaf indexes of different clones of Populus tomentosa have significant differences and regression equation in different clones are not the same，leaf area should be calculated according to clones; 2) Leaf area at different growth stages is different in regression equation and the regression equation at different growth stages should be determined. 3) the correlationship of leaf area and product of leaf length and leaf width is the most significant among one-factor linear regression equations, which is only suitable for the measurement of functional leaves; and in the power function regression equations,the correlationship of leaf area and leaf width is significant and there are no restrictions on leaf size.Power function regression equation of clone-50 of Populus tomentosa is LA=1.0014×W1.8295，power function regression equation of clone-83 of Populus tomentosa is LA=0.863×W1.832，power function regression equation of clone-30 of Populus tomentosa is LA=0.554×W2.051，power function regression equation of clone-B331 of Populus tomentosa is LA=1.639×W1.600.Therefore,leaf area can be estimated by measuring leaf width of four clones of Populus tomentosa,using their power function regression equations.