阿拉尔市二十种树木叶片形态分析

Analysis of Twenty Kinds of Tree Leaf Morphology in Alar

本文以阿拉尔市分布较多的二十种绿化树木为研究材料,采集每种树木的叶片,测量叶面积、叶长、叶宽、叶片鲜重、干重等数量指标,通过方差分析、相关分析和回归分析,得到结论:二十种树木叶片比叶面积最大的是悬铃木,为31.97 m^2/kg,胡杨叶片的比叶面积最小,为7.98 m^2/kg;通过系统聚类,以距离值4.98为标准,可以将20种树木叶片可以分为5大类群;建立了二十种树木叶片叶面积与叶长乘叶宽的一元线性回归方程,回归,关系均呈极显著,但胡杨和灰杨的回归方程使用价值不大,其它十八中树木叶面积回归方程有较大的实践意义。

Higher number of twenty kinds of trees in Alar were used as materials,the leaves of each tree were collected,the leaf area,leaf length,leaf width,leaf fresh weight and dry weight were measured,and analyzed by variance analysis,correlation analysis and regression analysis,it was concluded that： among the twenty kinds of trees,the Platanus × acerifolia had the largest specific leaf area of 31. 97 m^2/kg,the Populus euphratica had the smallest one of 7. 98 m^2/kg; Through systematic clustering,the leaves of 20 species can be classified into 5 groups by the standard of 4. 98; Twenty linear regression equations of leaf area and leaf length multiplied by leaf width of the twenty tree species were established,which of them were extremely significant. However,there were little practical value for the regression equation of Populus pruinosa and Populus euphratica,and there were great practical significance for the other eighteen tree spices.