期刊论文

Li, F.

中文

生态学报

1000-0933

2012

32

14

4300-4308

10.5846/stxb201107161058

国家自然科学基金（41071317） 辽宁省自然科学基金（20092013） 辽宁“***万人才工程”资助项目（2008921082） 沈阳市科技计划项目（F10-205-1-64） 辽宁大学“211”工程第三期重点学科资助项目（HJ211001） 辽宁大学省重点学科与辽宁省高校污染控制与环境修复重点实验室开放基金（HJ200907）

本校为第一且通讯机构

随着融雪剂在国内外寒冷地区的广泛应用及其在城市使用量的逐年增加,融雪剂对城市生态环境的危害引起了广泛的重视。其中,融雪剂在城市道路土壤中的积累对植物生长的影响已日益凸现。以油松幼苗为材料,通过分析0.2%浓度融雪剂胁迫下外源钾(K+)和水杨酸(salicylic acid,SA)对油松幼苗各生长生理指标的影响,探讨外源K+和SA在缓解融雪剂对油松幼苗生长抑制中的机理与剂量效应关系。结果表明,0.2%浓度的融雪剂处理对油松生长有明显的抑制作用,而20 mmol/L KNO3和2 mmol/L SA能明显诱导过氧化物酶(peroxidase,POD)活性的增强,缓解膜脂过氧化作用,降低丙二醛(malondialdehyde,MDA)在叶片中的积累,维持...

Large quantities of deicing salts are applied in urban areas for clearing the pavement and ensuring the normal traffic flow during the winter seasons in northeastern China. The salt from deicing operation has been observed to accumulate in roadside soil and inhibit the growth of vegetation. It was reported that the application of exogenous K+ and salicylic acid (SA) could protect plants against abiotic stress. In this study, pot experiments were performed in soil culture to test the efficacy of two soil additives, potassium nitrate (KNO3) and SA, in alleviating the stress of deicing salts on g...