Dose-effect correlation of chloride de-icing salt on Euonymus japonicus  

作　　者：Zhou-Yuan LI Jun-Hui ZHOU Ying-Mei LIANG 

机构地区：[1]College of Environmental Science and Engineering, Beijing Forestry University [2]School of Environment, Tsinghua University [3]College of Biological Sciences and Biotechnology, Beijing Forestry University [4]Museum of Beijing Forestry University, Beijing Forestry University

出　　处：《Forestry Studies in China》2013年第3期238-245,共8页中国林学（英文版）

基　　金：financially supported by the Science Innovation Project of Beijing Forestry University (No. 101305);the 985 Innovation Platform, China

摘　　要：In order to prevent severe pollution by de-icing salt on greenery along urban roads, a half lethal dose （LD_50）for a plant population was confirmed through stress simulation of chloride de-icing salt on Euonymus japonicus, with an ianalysis of physiological changes, statistics on mortality rate on plant populations and mathematic modeling during a 30- day subacute toxicity test. The results indicate that a significant positive correlation in the early stages and a significant negative correlation in the later stages were observed between the amount of chlorophyll a and b in plants and a cumulative dose of de-icing salt. The amounts of free proline in plants and the dose of de-icing salt were positively correlated Over the entire period. No significant correlation in the initial stage, but a significant negative correlation in later stages was observed between the soluble protein and the dose of de-icing salt. LDs0 of this chloride agent on E. japonicus is 5 kg.（L·m2）-1 over 30 days.In order to prevent severe pollution by de-icing salt on greenery along urban roads, a half lethal dose （LD_50）for a plant population was confirmed through stress simulation of chloride de-icing salt on Euonymus japonicus, with an ianalysis of physiological changes, statistics on mortality rate on plant populations and mathematic modeling during a 30- day subacute toxicity test. The results indicate that a significant positive correlation in the early stages and a significant negative correlation in the later stages were observed between the amount of chlorophyll a and b in plants and a cumulative dose of de-icing salt. The amounts of free proline in plants and the dose of de-icing salt were positively correlated Over the entire period. No significant correlation in the initial stage, but a significant negative correlation in later stages was observed between the soluble protein and the dose of de-icing salt. LDs0 of this chloride agent on E. japonicus is 5 kg.（L·m2）-1 over 30 days.

关 键 词：de-icing salt Euonymus japonicus dose-effect correlation half lethal dose 

分 类 号：X50[环境科学与工程—环境工程]