几个引种的低纬度树种在沈阳地区春季死亡的生理机制探析  

A Study of Physiological Dynamics of Spring Death of Several Low Latitude Tree Species in Shenyang

作　　者：陆庆轩[1] 陈岩[1] 王菲[1] 宋南[1] 代保清[1] 宁祝华[2] Kamran Abdollahi 

机构地区：[1]沈阳市园林科学研究院,沈阳110016 [2]美国南方大学,路易斯安那巴吞鲁日70813

出　　处：《中国城市林业》2016年第3期58-61,共4页Journal of Chinese Urban Forestry

摘　　要：华北等低纬度地区自然分布的园林树种,如国槐、白蜡、垂柳等,引入到沈阳地区栽植已经有十几年乃至上百年的历史。但是,这些低纬度树种在高纬度地区栽植后,特殊年份经常发生春季大量死亡的现象。通过光合速率测定、树干径流测定和气象因子的分析,结果表明,这些树种大量死亡的原因是树种的生理特征与气候因子的综合作用所致。Low latitude tree species such as Sophora japonica, Fraxinus chinensis, Salix babylonica, etc, has been introduced to Shenyang as landscape tree for more than a decade and even a hundred years. But these species often die in a large amount in spring season with abnormal climate when cultivated in high latitude region. By the measurement of photosynthetic ratio and trunk liquid flow, and the analyses of climate data, we concluded that the death of low latitude trees is caused by the combined effect of physiological characteristics of these tree species and some climate factors.

关 键 词：树种 纬度 死亡 生理机制 

分 类 号：S718.4[农业科学—林学]