绿化林木氯含量、质膜透性与季节的关系及其抗性的初步研究

STUDY ON CHANGES OF EITHER CHLORINE CONTENT OR MEMBRANE PERMEABILITY OF LEAVES WITH SEASONS AND HARDINESS OF TREES

研究表明：家榆、糖槭、垂柳和中东杨等四种林木叶片氯含量和质膜透性明显随季节的更替而增加，林木受到氯气污染叶绿素含量显著下降。植物对氯气的吸收能力和抗性并不尽一致，家榆对氯的吸收能力很大，但其抗性居中；中东杨对氯的吸收能力和抗性均居中等；糖槭的吸收能力和抗性均较低；垂柳对氯的吸收能力较大。

This paper show that: Both chlorine content and memberane permeability of leaves of trees increased with seasons. Chlorophyll contents of trees polluted by chlorine decreased,remarkably. Absorptive capacity of trees is not equal to hardiness completely. Though capacity of chlorine absorptive of elm was more intensive than other trees, hardiness of elm against chlorine was in middle levels. Either capacity of chlorine absorption or hardiness of poplar was in middle levels, which of boxelder in lower level. Willow possessed intensive capacity of chlorine absorption, and could withstand chlorine harm.