不同绿化树种抗氟性机理研究  

Fluoride Resistance Mechanism of Different Trees

作　　者：杨玉珍[1] 

机构地区：[1]郑州教育学院生物系

出　　处：《河南农业大学学报》1999年第1期82-86,共5页Journal of Henan Agricultural University

摘　　要：选用７种绿化树木，对其生长势、受害程度等指标进行了野外调查，分析了大气氟污染后树木生理代谢的变化及其与抗氟性的关系，并进行客观、定量的分类。结果表明，树木受氟化物危害后，叶片ｐＨ值、叶绿素含量、光合速率、蔗糖含量下降，下降幅度与树木抗性呈负相关关系；质膜相对透性、耐酸力的大小也与抗氟性有明显的相关性；以６项生理指标的变化为聚类因子进行模糊聚类分析，将７种树木分成为３类。On the basis of field investigation of seven trees′ growing gesture and harmed degree,a study was carried out on the effects of fluoride on the physiological process as well as the resistance mechanisms of trees to fluoride pollution And the trees′ fluoride resistance was classified by Fuzzy assembly analysis.The main results show that:after the trees absorbed fluoride,the pH value,chlorophyll amount,photosynthesis and sucrose amount decreased.The decreased percentage was negatively corelated to the fluoride resistance;permeability of cell membrane and the ability of acid duration were also correlated to the tree′s fluoride resistance;according to the six physiological traits mentioned above,seven trees′ fluoride resistance were devided into three classifications by Fuzzy assembly analysis

关 键 词：树木 抗氟性 生理代谢 模糊聚类 

分 类 号：X503.235[环境科学与工程—环境工程] Q945[生物学—植物学]