水土保持学报2012，Vol.26Issue(3)：249-252,259,5.
植物叶面自由能特征和水滴形态对截留降水的影响
Effects of Leaf Surface Energy Characteristics and Drop Shape on Rainfall Interception
摘要
Abstract
Leaf maximum water storage capacities of twenty one plant species were investigated by employing two different methods-submerging of and spraying at phytoelements,respectively.The relationships between leaf maximum water storage capacities and surface wetness,surface free energy,its polar and dispersive component were primarily studied.The reason why there were significant differences between the two methods of measuring the leaf maximum water storage capacities was investigated as well.Results indicated that differences in leaf maximum water storage capacities among species were significant（P〈0.001）,and the submerging method yielded significantly lower values as compared to the spraying method.Average leaf maximum water storage capacities covered a wide range from 29.4 g/m2 to 180.0 g/m2,and 94.1 g/m2 to 278.3 g/m2,using the submerging and spraying method,respectively.For submerging method,significant positive correlations between leaf maximum water storage capacities and leaf surface free energy,its dispersive component could be found（P=0.002,P=0.000）.And the results showed a power and an exponential relationship between leaf maximum water storage capacities and polar component（P=0.006）,leaf contact angles（P=0.004）,respectively.As to spraying method,however,the correlations between leaf maximum water storage capacities and leaf surface free energy,its polar and dispersive component,leaf contact angles were not significant（P〉0.05）.This may be due to the water droplets that were gradually formed from small water droplets,which were generated by leaf surface free energy at the beginning of spraying process,by water surface tension and gravity during the process of spraying.关键词
最大持水量/降水截留/润湿性/表面自由能/水滴形态Key words
maximum water storage capacity/rainfall interception/wettability/surface free energy/water drop shape分类
农业科技引用本文复制引用
王会霞,石辉,玉亚,石彦..植物叶面自由能特征和水滴形态对截留降水的影响[J].水土保持学报,2012,26(3):249-252,259,5.基金项目
国家自然科学基金项目 （）
国家林业局林业公益性行业科研专项 （）
