植物叶片截留特征分析

Analysis of Characteristics of Plant Leaf Interception

植物最大截留量是分析植物截留量的重要参数,分别采用浸泡法和喷水法测定了13种植物叶片的最大截留量。结果表明:(1)不同植物叶片最大截留量相差较大,喷水法测定的植物叶片最大截留量从腊梅叶片的0.008g/cm2到小叶杨叶片的0.03g/cm2,差异性显著(p<0.05),因此精确分析植物截留量时应考虑物种差异。(2)叶长、叶宽、叶周长、叶鲜重与叶片最大截留量的相关性不显著,而叶面积与叶片最大截留量遵循线性函数变化。(3)对于刺槐、杏树、石楠、柿子、柳树、小叶杨、石榴、白榆树、竹子、马铃薯、腊梅叶片而言,喷水法测得叶片最大截留量大于浸泡法,对于毛豆、樱桃而言,浸泡法测量的最大截留量值大于喷水法测量值。

Plant maximum water storage amount of interception is the significant parameter of plant intercep- tion analysis. We have determined interception capacity of thirteen kinds of plant leaves using submerging method and the spraying method. The main results showed that： （1） the maximum water storage amount of leaf is obviously different between different species, the maximum water storage amount of leave measured by spraying method changes from 0. 006 g/cm^2 of Chimonanthus praecox leaf to 0. 030 2 g/cm^2 of simon pop- lar leaf, significant differences （p 〈 0.05）, so species differences should be considered when analyzing plant interception accurately;（2） leaf length, leaf width, leaf perimeter and leaf fresh weight had no significant correlation with the maximum water storage amount of leaf, and the maximum water storage amount of leaf changes in line with leaf area; （3） for black locus, apricot, photinia, persimmon, willow, simon poplar, white elm, pomegranate, bamboo, potato, Chimonanthus praecox leaves, the measured values by spraying method are higher than by submerging method, for the young soybean, cherry, the measured values by spra- ying method are lower than by submerging method.