安徽农业科学2017，Vol.45Issue(12)：1-4,11,5.
2种生境下红砂枝系构型特征
Plant Architecture Characteristics of Reaumuria soongorica in Two Different Ecological Habits
摘要
Abstract
[Objective] The aim was to study plant architecture characteristics of Reaumuria soongorica in two different ecological habits,and analyze the adaptive strategy of plant architecture characteristics of Reaumuria soongorica to external environment variation.[Method] Taking the super-xerophobic shrub Reaumuria soongorica as research object,we selected two samples of Jiuzhoutai of Lanzhou City and Linze of Zhangye City.Based on the method of statistical test and fractal theory,we studied the branching variability of Reaumuria soongorica by branching rate,branch length,branching angle and branch diameter ratio index.[Result] There was no significant difference in the overall branching rate and gradual branching rate of Reaumuria soongorica between Jiuzhoutai of Lanzhou City and Linze of Zhangye City;the overall branch rate of Reaumuria soongorica in Jiuzhoutai of Lanzhou City was slightly larger than that of Linze of Zhangye City,and the gradual branching rate of Reaumuria soongorica in Jiuzhoutai of Lanzhou City was slightly less than that in Linze of Zhangye City.Jiuzhoutai of Lanzhou City Reaumuria soongorica at all levels of branching branches were significantly longer than Linze of Zhangye City Reaumuria soongorica red sand at all levels of branch length.Jiuzhoutai of Lanzhou City Reaumuria soongorica and Linze of Zhangye City Reaumuria soongorica branch stretching ability from the first level to the fourth level showed a relatively weakening trend.There were significant differences in the branching angle between Jiuzhoutai of Lanzhou City Reaumuria soongorica and Linze of Zhangye City Reaumuria soongorica.On the whole,Jiuzhoutai of Lanzhou City Reaumuria soongorica at all levels of branching angle was significantly greater than Linze of Zhangye City Reaumuria soongorica at all levels of branching angle.From 1 to 4 branch angle showed a significant reduction in the trend,the angle was less than 90°.Jiuzhoutai of Lanzhou City Reaumuria soongorica at all levels of branch diameter ratio was significantly higher than Linze of Zhangye City Reaumuria soongorica at all levels branch diameter ratio,that is,the carrying capacity of Jiuzhoutai of Lanzhou City Reaumuria soongorica was significantly higher than that of Linze of Zhangye City Reaumuria soongorica.[Conclusion] The results provide theoretical basis for understanding the internal structure of Reaumuria soongorica and the ecological adaptability to environment.关键词
生境/荒漠植物/红砂/枝系构型特征Key words
Ecosystem/Desert plants/Reaumuria soongorica/Characteristics of branch architecture分类
农业科技引用本文复制引用
海小伟,李毅,谢燕飞..2种生境下红砂枝系构型特征[J].安徽农业科学,2017,45(12):1-4,11,5.基金项目
教育厅高等学校科研项目(2016A-026). （2016A-026）
